• 제목/요약/키워드: Test hypothesis

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제품속성, 브랜드 및 기업 이미지가 소비자의 구매의도에 미치는 영향 -중국 9개 지역의 휴대폰시장을 중심으로- (The Effects of Product Attributes, Brand and Corporate's Images on Consumer's Purchasing Intension - Focusing on Chinese Cellular Phone Markets in 9 Areas -)

  • 김성철;박의범
    • 국제지역연구
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    • 제12권3호
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    • pp.367-390
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    • 2008
  • 중국 휴대폰시장 성장은 한국 이동통신 산업에 기회와 위협을 주는 양면적인 성격을 지니고 있다. 수출시장으로서의 중요성과 함께 중국 휴대폰 산업과의 경합성도 점차 거세지고 있다. 이는 기업의 복합적인 요소를 고려한 소비자 소비성향과 구매의도 파악에 기초한 국제마케팅전략 수립의 현지화를 요구한다. 본 연구에서는 중국 진출을 계획하거나 중국에 이미 진출해 있는 한국 기업에게 전략적 시사점을 제공하는데 그 목적이 있다. 실증분석에서 가설검증 결과를 살펴보면 다음과 같다. 가설 1'기업이미지는 구매의도에 정(+)의 영향을 미칠 것이다'라는 가설이 채택되었다. 가설 2'브랜드이미지는 구매의도에 정(+)의 영향을 미칠 것이다'라는 가설도 채택되었다. 가설 3'제품속성은 구매의도에 정(+)의 영향을 미칠 것이다'라는 가설도 채택되었다. 조절변수인 인구통계학적 특성을 고려한 세 독립변수가 구매의도에 미치는 영향의 차이를 검증한 결과에서 성별, 연령이 기각되었고 학력이 부분채택 되었으며 기타 연구가설이 모두 채택된다. 실증분석에서 사용된 소비자에 대한 측정항목을 중심으로 실제에 적용 가능한 전략을 제시하였다.

일부 도시 영세 지역 주민의 건강행위와 보건 의료 이용에 관한 연구 (A Study on Health Behavior and Utilization of Health Service of Residents in Low-Income Areas)

  • 정연강;한승의
    • 지역사회간호학회지
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    • 제5권1호
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    • pp.30-52
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    • 1994
  • The purpose of this study is to look into the health behavior and utilization of health service, and the factors which have influence on both of them. In order to research them, it visited home and interviewed selecting randomly 300 subjects who can understand the purpose of this study, want to participate and are possible to interview. Questionnaries survey was administered during the period from April.6 to May.12. 1993. Collected materials analysis were dealt with a method of SPSS PC Program and used percentage. Mean, SD. t-test, $X^2-test$, Pearson's Correlation Coefficient, Multiple Regression and One-way ANOVA for hypothesis verification. The results of this study are as follows. 1. The hypothesis is that there will be a significant difference in performance degree of health behavior by general characteristics(sex, age, educational background, occupation, religion) of subjects. According to the results, it turned out that sex(P=.035), educational background(P=.0432), and occupation(P=.440) appeared to be a significant difference as P<.05. 2. The hypothesis that the more interesting degree on health of subjects have, the better they performance for health behavior was supported (r=.2552, P<.001). 3. The hypothesis that the healthier subjects are, the better they performance for health behavior was supported(r=.5262, P<.001). The highest correlation was seen between the healthier subjects and health behavior. According to the results of multiple regression analysis with interesting degree on health and healthier subjects as dependent variables, it turned out that R2 was 35% and had a significant difference. 4. The hypothesis is that there will be a difference in the utilization of health service by general characteristics(sex, age, educational background, occupation, religion). According to. the results, it showed that educational background (dental clinic), religion(pharmacy) had an influence on the frequency of utilization of facilities (P<.05).

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일부 초등학교 학생들의 응급처치 교육효과 -기도 폐쇄 시 응급처치 교육을 중심으로- (Effects of a First-aid Skills Training for Elementary Students - Focus on Management of Foreign Body Airway Obstruction -)

  • 김유선;김현숙;김윤신
    • 한국학교보건학회지
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    • 제24권1호
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    • pp.50-60
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    • 2011
  • Purpose: This paper compares practical first aid training and theoretical first aid training in elementary schools. Methods: Research subjects were randomly selected and sorted into experimental and control groups. The former is one class (28 students) of the fifth grade students, and the latter is another class (30 students). In order to verify the effect of first aid training, we conducted theoretical as well as practical first-aid instruction about foreign body airway obstruction to the experimental group, but conducted only theoretical instruction with the control group. Data were analyzed by the ${\chi}^2$-test and t-test, one-way using the SPSS / win 12.0 program. The results were as follows (p=.05). Results: The first hypothesis was that the knowledge of an experimental group would be better than that of a control group. The analysis showed a significant difference (p=.000) between the two groups, supporting this hypothesis. The second hypothesis was that the experimental group would be more accurate than the control group. There was no because of (p=.000) between the two groups on this measure. The third hypothesis, that the two groups would vary over time on the measure of accuracy, was supported by the following observations: the experimental results were accumulated before, two days after and two weeks after the training (experimental group, p=.000, and control group, p=.000). This supports the third hypothesis that the technical performance accuracy levels of complete respiratory obstruction first aid vary over time. Conclusion: First aid training has to include practical education as well as theoretical education in the future, as part of a school's health education for elementary students. Health education classrooms should be prepared to teach first-aid theory and be supplied with equipment for practical exercises. Schools, communities, and private organizations need to carry out the practical education component periodically.

모유수유교육과 추후간호방법이 산모의 모유수유실천율과 모유수유방법에 미치는 효과 - 가정방문과 전화상담을 중심으로 - (Effect of Breast-feeding Education and Follow-up care on the Breast-feeding Rate and the Breast-feeding Method - Focused on Home Visit and Phone Counselling -)

  • 박숙희;고효정
    • 여성건강간호학회지
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    • 제7권1호
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    • pp.30-43
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    • 2001
  • This was a pre-experimental study to confirm the breast-feeding ability and effect of follow up care on the breast-feeding rate and the breast-feeding method by the mother-infant breast-feeding assessment tool for the mothers who got the breast-feeding education. The subjects were 46 mothers who experienced normal delivery of infants at a college hospital in K-city, Kyungsangbuk-do, from July 1 to October 21, 2000. The instrument for data obtainment were The Mother-Infant Breast-Feeding Assessment Tool of Johnson et al. (1999), and The Breast- Feeding Method Measurement Tool of Jeong, Geum-hee(1997). This instrument was reliable, showing Cronbach $\alpha$.751. This study classified them into 3 groups: at high risk for breast-feeding failure, at risk for breast-feeding problems, and at low risk for breast-feeding failure by the mother-infant breast-feeding assessment tool on the day of discharge from the hospital after delivering individual breast-feeding education to the subjects. This study investigated the breast-feeding rate and the breast-feeding method through mail questionnaire at the four week after childbirth, and through the phone counselling and the home visit for follow up care at the first week and the second week after childbirth. The sixth week after childbirth, this study investigated the breast-feeding rate by phone. The data analyzed the hypothesizes by $x^2$-test, paired t-test, ANOVA, Wilcoxon signed rank test, Wilcoxon rank sum test and trend analysis using SPSS/PC+ WIN 10.0 program. The results were as follows : 1) Hypothesis 1-1, "there won't be any difference the breast-feeding rate of a group at risk for breast-feeding failure by the time elapsed" was supported through constant the breast-feeding rate, because changes in the breast-feeding rate by the time elapsed after childbirth wasn't statistically significant(t= -1.501, p=.270). Hypothesis 1-2, "there won't be any difference the breast-feeding rate of group at low risk for breast-feeding failure by the time elapsed" was supported through constant the breast-feeding rate, because changes in the breast-feeding rate by the time elapsed after childbirth wasn't statistically significant(t=-1.732, p=.225). 2) Hypothesis 2-1, "there won't be any difference between the breast-feeding method of group at risk for breast-feeding failure for four weeks after childbirth and just after childbirth” was rejected, because the mean point of post test appeared to be higher than that of pre test(t=-7.267, p=.000). Hypothesis 2-2, "there won't be any difference between the breast-feeding method of the group at low risk for breast-feeding failure for four weeks after childbirth and just after childbirth" was rejected, because the mean point of post test appeared to be higher than that of pre test(t=-2.501, p=.012). 3)The 3rd hypothesis, "there won't be any difference between breast-feeding method of groups at risk for breast-feeding problems and at low risk for breast-feeding failure at the 4th week after childbirth and just after childbirth" didn't show any difference between the breast-feeding method of groups at risk for breast-feeding problems and at low risk for breast-feeding failure in the advance test(t=-1.521, p=.130) but there was difference between them in post test (t=-2.012, p=.044). As a result, the 3rd hypothesis was supported by pre test, but it was rejected by post test. In conclusion, this study confirmed breast- feeding education and follow up care just after childbirth were effective for the breast-feeding rate and method. Accordingly, it is proposed that successful nursing intervention of breast-feeding to be necessary by continuously providing follow up care through the mother-infant breast-feeding assessment tool as well as to execute individual breast-feeding education to mothers just after childbirth.

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음악요법이 자기공명영상(MRI) 검사시 환자의 불안에 미치는 영향 (Effects of Music Therapy on the Anxiety of Patients who Take the Magnetic Resonance Imaging(MRI) Test)

  • 전병규;여진동
    • 한국콘텐츠학회논문지
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    • 제11권6호
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    • pp.289-301
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    • 2011
  • 본 연구는 음악요법이 자기공명영상(MRI) 검사로 인한 불안정도와 검사시 불편감에 미치는 음악요법의 효과를 파악하고자 시도된 비동등성 대조군 사전-사후 실험설계의 유사실험이다. "음악요법을 받은 군은 음악요법을 받지 않는 군보다 검사 중 불안 점수가 낮을 것이다"는 음악요법 실시 후 실험군의 불안점수가 대조군의 불안점수와 비교하여 유의한 차이가 있어 채택되었다. "음악요법을 받은 군은 음악요법을 받지 않는 군보다 검사 후 활력징후가 낮을 것이다"는 수축기 혈압, 이완기혈압에 대한 가설은 기각되었지만, 맥박에서는 유의 한 차이가 나타나 부분적으로 채택 되었다. "음악요법을 받은군은 음악요법을 받지 않는 군보다 주간적 불편감이 낮을 것이다"는 두 집단간의 유의한 차이를 보였다. 한편 주관적인 불편감의 하부요인 중 긴장감 에서만 유의한 차이가 있었으며, 동통, 어지러움, 공포감에서는 유의한 차이가 없었다. 이상의 연구결과로 볼 때 음악요법은 자기공명영상(MRI) 검사중 환자의 상태불안을 감소시킬 수 있는 유용한 대체검사법이 될 수 있을 것이라고 생각된다.

Bayesian test of homogenity in small areas: A discretization approach

  • Kim, Min Sup;Nandram, Balgobin;Kim, Dal Ho
    • Journal of the Korean Data and Information Science Society
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    • 제28권6호
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    • pp.1547-1555
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    • 2017
  • This paper studies Bayesian test of homogeneity in contingency tables made by discretizing a continuous variable. Sometimes when we are considering events of interest in small area setup, we can think of discretization approaches about the continuous variable. If we properly discretize the continuous variable, we can find invisible relationships between areas (groups) and a continuous variable of interest. The proper discretization of the continuous variable can support the alternative hypothesis of the homogeneity test in contingency tables even if the null hypothesis was not rejected through k-sample tests involving one-way ANOVA. In other words, the proportions of variables with a particular level can vary from group to group by the discretization. If we discretize the the continuous variable, it can be treated as an analysis of the contingency table. In this case, the chi-squared test is the most commonly employed method. However, further discretization gives rise to more cells in the table. As a result, the count in the cells becomes smaller and the accuracy of the test becomes lower. To prevent this, we can consider the Bayesian approach and apply it to the setup of the homogeneity test.

Revisiting the Effect of Financial Elements on Stock Performance Using Corporate Social Responsibility Cost Growth

  • JOUHA, Faraj;ALBAKAY, Khalleefah;GHOZALI, Imam;HARTO, Puji
    • The Journal of Asian Finance, Economics and Business
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    • 제8권1호
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    • pp.767-780
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    • 2021
  • The purpose of this research is to analyze the effect of financial elements (asset growth, liability growth, equity growth, revenue growth, and profit growth) on stock price performance and to analyze the growth of Corporate Social Responsibility (CSR) costs as a moderating effect. The technique analysis used is regression analysis. Samples in this analysis are manufacturing firms listed on the Indonesian Stock Exchange (IDX) for the period 2014-2018. The use of regression models for hypothesis testing must fulfill several applicable assumptions such as Normality Test, Heteroscedasticity Test, Multicollinearity Test, Autocorrelation Test, Model Fit Test, Determination Coefficient Test, and Hypothesis Test. Data analysis used two research models, namely model 1 and model 2. Model 1 is without the moderating variable, and model 2 is with the moderating variable, that is, CSR cost growth. Based on the result of the regression analysis, it can be inferred that the asset, revenue, and profit growth have a positive impact on stock price results. Liabilities and equity growth do not affect stock price performance. Operating expense growth has a significant effect on price performance. CSR cost growth can moderate the effect of growth in financial statement elements on stock price performance but is not significant.

거리함수접근법을 이용한 Porter 가설에 대한 연구 (A Study on Porter Hypothesis : A Distance Function Approach)

  • 이명헌
    • 자원ㆍ환경경제연구
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    • 제16권1호
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    • pp.171-197
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    • 2007
  • 본 논문에서는 자료 제약의 현실적 상황에서 Porter 가설이 성립되기 위한 조건을 제시한다. 이를 위하여 기업의 생산비용 최소화 달성 여부에 관계없이 성립함으로써 분석결과의 신뢰성을 확보할 수 있는 두 유형의 산출물거리함수를 활용한다. Shephard 거리함수와 방향 거리함수, Shephard 거리함수로부터 공해물질의 한계저감비용을 구한 다음, Porter 가설이 내포한 생산기술이 전제되어 있는 방향 거리함수를 추정하여 얻은 한계저감비용과 비교한다. 국내 전력산업을 대상으로 1970~1998년 기간 동안 방향 거리함수에 의한 $SO_2$의 연평균 한계저감비용은 Shephard 거리함수 도출값보다 약 50퍼센트 높게 나타났는데 이는 Porter 가설이 성립하기 위해서는 새로운 발전시설과 공정에 투자하여 생산성을 평균적으로 50퍼센트 이상 향상시킬 수 있어야 함을 의미한다.

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운동프로그램이 피로, 지각된 건강상태, 운동관련 정서, 지각된 유익성 및 자기효능감에 미치는 효과 - 여대생을 대상으로 - (The Effects of Exercise Program on Fatigue, Perceived Health State, Exercise-related Affect, Perceived benefits, and Self-Efficacy - From the samples of female college students -)

  • 최은숙;이미라
    • 대한간호학회지
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    • 제29권6호
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    • pp.1254-1262
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    • 1999
  • The purpose of this study was to examine the effects of 6-wk low intensity exercise program on fatigue, perceived health state, exercise-related affect, perceived benefits, and exercise self-efficacy for female college student's. The subjects of the study consisted of thirty-four female college students. The research subjects were assigned to experimental and control group. The experimental group participated in 13-17 and 30-60 minute sesseions of exercise program over 6 weeks. Data analysis was done by t-test with SAS program. The results of this study are as follows. 1) The first hypothesis, “The fatigue of experimental group will be lower than control group”, was supported. 2) The second hypothesis, “The perceived health state of experimental group will be higher than control group”, was not supported. 3) The third hypothesis, “The exercise-related affect of experimental group will be higher than control group”, was not supported. 4) The fourth hypothesis, “The benefits of exercise of experimental group will be higher than control group”, was not supported. 5) The fifth hypothesis, “The self-efficacy for exercise of experimental group will be higher than control group”, was supported.

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샘플링오차에 의한 품질통계 모형의 해석 (Interpretation of Quality Statistics Using Sampling Error)

  • 최성운
    • 대한안전경영과학회지
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    • 제10권2호
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    • pp.205-210
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    • 2008
  • The research interprets the principles of sampling error design for quality statistics models such as hypothesis test, interval estimation, control charts and acceptance sampling. Introducing the proper discussions of the design of significance level according to the use of hypothesis test, then it presents two methods to interpret significance by Neyman-Pearson and Fisher. Second point of the study proposes the design of confidence level for interval estimation by Bayesian confidence set, frequentist confidential set and fiducial interval. Third, the content also indicates the design of type I error and type II error considering both productivity and customer claim for control chart. Finally, the study reflects the design of producer's risk with operating charistictics curve, screening and switch rules for the purpose of purchasing and subcontraction.