Below are data on gender and drink preference. How many women would you expect to like coke if the null hypothesis were true? Soft drink choice Coke Pepsi Total Male 19 6 25 Female 10 15 25 Total 29 21 50
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Below are data on gender and drink preference. How many women would you expect to like coke if the null hypothesis were true?
Soft drink choice | |||
Coke | Pepsi | Total | |
Male | 19 | 6 | 25 |
Female | 10 | 15 | 25 |
Total | 29 | 21 | 50 |
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- Health insurer benefits vary by the size of the company. The sample data below show the number of companies providing health insurance for small, medium, and large companies. For the purpose of this study, small companies are companies that have fewer than 100 employees. Medium-sized companies have 100 to 999 employees, and largevcompanies have 1000 or more employees. The questionnaire sent to 225 employees asked whether or not the employee had health insurance and then asked the employee to indicate the size of the company. Health Insurance Size of company Yes No Total Small. 35 15 50 Medium 67 8 75 Large 87 13 100 A. Conduct a test of independence to determine whether health insurance coverage is independent of the size of the company. What is the p-value? Compute the value of the x2 test statistic (to 2 decimal)The table below shows the percent of golfers who participate in other activities. OTHER ACTIVITIES OF GOLFERS Activity Golfers Who Participate Fishing 32% Boating/Sailing 16% Snow Skiing 15% Watching Sports on TV 58% Frequent Flying 33% Based on the table, out of 50 golfers, how many would be expected to watch sports on TV? o 16 golfers o 58 golfers O 29 golfers o 33 golfersThe two-way table below shows teenage driver gender and whether or not the respondent had texted at least once while driving during the last thirty days. Teenage driver- Teenage driver- Male Female Texted at least once while driving during past 30 days. Had not texted at least once while 7 11 9 driving during the past 30 days. What percentage of the sample had texted at least once while driving in the past thirty days? O 37.5% O 62.5% De O 50% O 43.75%
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- Last school year, the student body of a local university consisted of 35% freshmen, 24% sophomores, 26% juniors, and 15% seniors. A sample of 300 students taken from this year's student body showed the following number of students in each classification. Freshmen 90 Sophomores 60 Juniors 90 Seniors 60 We are interested in determining whether or not there has been a significant change in the classifications between the last school year and this school year. The calculated value for the test statistic equals a. 0.5444 b. 2.789 c. 10.989 d. 15.231Last school year, the student body of a local university consisted of 30% freshmen, 24% sophomores, 26% juniors, and 20% seniors. A sample of 400 students taken from this year's student body showed the following number of students in each classification. Freshmen 113 Sophomores 98 Juniors 115 Seniors 74 We are interested in determining whether or not there has been a significant change in the classifications between the last school year and this school year. The calculated value for the test statistic equals Select one: a. .54. b. .65. c. 2.063. d. 2.664.The sports coaches at West High School believe that 12% of their students play soccer. In a sample of 155 students, it is found that 21 play soccer. What is the test statistic for testing whether the coaches are correct? Show all calculation
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