# Question: A small college town has four pizza parlors that make

A small college town has four pizza parlors that make deliveries. A student doing a research paper for her business management class decides to compare how promptly the four parlors deliver. On six randomly chosen nights, she orders a large pepperoni pizza from each establishment, then records the elapsed time until the pizza is delivered to her apartment. Assume that her apartment is approximately the same distance from the four pizza parlors. The following table shows the times (in minutes) for these deliveries. Assume that all the assumptions required to apply the one-way ANOVA procedure hold true.

a. Using a 5% significance level, test the null hypothesis that the mean delivery time is the same for each of the four pizza parlors.

b. Is it a Type I error or a Type II error that may have been committed in part a? Explain.

a. Using a 5% significance level, test the null hypothesis that the mean delivery time is the same for each of the four pizza parlors.

b. Is it a Type I error or a Type II error that may have been committed in part a? Explain.

## Answer to relevant Questions

Briefly describe the assumptions that must hold true to apply the one-way ANOVA procedure as mentioned in this chapter. Consider the following data obtained for two samples selected at random from two populations that are independent and normally distributed with equal variances. a. Calculate the means and standard deviations for these ...Explain the meaning of the words simple and linear as used in simple linear regression. Suppose that you work part-time at a bowling alley that is open daily from noon to midnight. Although business is usually slow from noon to 6 PM, the owner has noticed that it is better on hotter days during the summer, ...Plot the following straight lines. Give the values of the y-intercept and slope for each of these lines and interpret them. Indicate whether each of the lines gives a positive or a negative relationship between x and y. a. y ...Post your question