# Question

Suppose the Department of Transportation would like to test the hypothesis that the average gasoline consumption per car in the United States is 6 liters per day. (We’re going metric here.) The following data represent the number of liters used per day for 25 randomly selected cars. These data can also be found in the Excel file labeled liters. xlsx.

Using σ = 0.02, answer the following:

a. State the null and alternative hypotheses.

b. What conclusions can be drawn based on this sample?

c. Estimate the p value for this test using Table 5 in Appendix A.

d. Determine the precise p value for this test using Excel.

e. Use PHStat to validate these results.

f. What assumptions need to be made to perform this analysis?

Using σ = 0.02, answer the following:

a. State the null and alternative hypotheses.

b. What conclusions can be drawn based on this sample?

c. Estimate the p value for this test using Table 5 in Appendix A.

d. Determine the precise p value for this test using Excel.

e. Use PHStat to validate these results.

f. What assumptions need to be made to perform this analysis?

## Answer to relevant Questions

A growing number of younger employees have been participating in their company’s retirement plans in recent years. According to Vanguard Group, 44% of employees under the age of 25 were making contributions to their 401(k) ...During 2012, the average monthly bill for digital cable in the United States was $ 86 according to research firm Centris. Suppose Comcast would like to test the hypothesis that the average monthly bill is higher than $ 86 ...Small businesses (See Problem 9.63) are viewed by many as the backbone of the U. S. economy. Small business owners are often described as entrepreneurs, requiring a variety of skills in order to be successful. A 2013 survey ...Consider the following hypothesis statement using α = 0.05 and data from two independent samples. Assume the population variances are equal and the populations are normally distributed. a. Calculate the appropriate test ...Consider the following hypothesis statement using α = 0.10 and data from two independent samples: a. Calculate the appropriate test statistic and interpret the result. b. Calculate the p value and interpret the result. c. ...Post your question

0