The director of transportation of a large company is interested in the usage of

Question

The director of transportation of a large company is interested in the usage of her van pool. She considers her routes to be divided into local and non-local. She is particularly interested in learning if there is a difference in the proportion of males and females who use the local routes. She takes a sample of a day's riders and finds the following: She will use this information to perform a chi-square hypothesis test using a level of significance of 0.05. Referring to Table 12-7, the test will involve _____degree(s) of freedom. TYPE: FI DIFFICULTY: Easy KEYWORDS: Chi-square test for difference in proportions, degrees of freedom Referring to Table 12-7, the overall or average proportion of local riders is____. TYPE: FI DIFFICULTY: Easy KEYWORDS: Chi-square test for difference in proportions, properties

Explanation / Answer

Part-1

We have Degree of freedom=((row-1)*(column-1)=(2-1)*(2-1)=1

Part-2

We have overall proportion of local riders=71/129 =0.5504

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