What is our null hypothesis?

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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Please answer questions 3 and 8 and 6

QUESTION 14
We are interested in whether different factors (e.g., performance, reliability, style) influenced males and females differently when buying a car. Below
is the data we gathered.
Performance Reliability Style
Male
42
66
52
Female
38
134
68
Answer the following questions:
1. What is our null hypothesis?
a. There is no association between gender and the different factors that influence buying a car.
b. There is an association between gender and the different factors that influence buying a car.
c. Men like cars more than women.
d. Reliability is important when buying a car.
2. What is the alternative hypothesis
a. There is no association between gender and the different factors that influence buying a car.
b. There is an association between gender and the different factors that influence buying a car.
c. Men like cars more than women.
d. Reliability is important when buying a car.
3. Fill in the expected frequencies for the following:
Performance
Reliability
Style
Male
%31
Female:
4. What is the chi-square value?
Transcribed Image Text:QUESTION 14 We are interested in whether different factors (e.g., performance, reliability, style) influenced males and females differently when buying a car. Below is the data we gathered. Performance Reliability Style Male 42 66 52 Female 38 134 68 Answer the following questions: 1. What is our null hypothesis? a. There is no association between gender and the different factors that influence buying a car. b. There is an association between gender and the different factors that influence buying a car. c. Men like cars more than women. d. Reliability is important when buying a car. 2. What is the alternative hypothesis a. There is no association between gender and the different factors that influence buying a car. b. There is an association between gender and the different factors that influence buying a car. c. Men like cars more than women. d. Reliability is important when buying a car. 3. Fill in the expected frequencies for the following: Performance Reliability Style Male %31 Female: 4. What is the chi-square value?
4. What is the chi-square value?
5. What is the degrees of freedom?
6. What is the critical value?
7. What is your decision?
a. Reject the null and conclude that different factors do influence males and females differently when buying a car.
b. Reject the null and conclude that different factors do not influence males and females differently when buying a car.
c. Fail to reject the null and conclude that different factors do not influence males and females differently when buying a car.
d. Rail to reject the null and conclude that different factors do influence males and females when buying a car
8. What is the effect size?
Transcribed Image Text:4. What is the chi-square value? 5. What is the degrees of freedom? 6. What is the critical value? 7. What is your decision? a. Reject the null and conclude that different factors do influence males and females differently when buying a car. b. Reject the null and conclude that different factors do not influence males and females differently when buying a car. c. Fail to reject the null and conclude that different factors do not influence males and females differently when buying a car. d. Rail to reject the null and conclude that different factors do influence males and females when buying a car 8. What is the effect size?
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