# Question

A billiards parlor in a small town is open just 4 days per week—Thursday through Sunday. Revenues vary considerably from day to day and week to week, so the owner is not sure whether some days of the week are more profitable than others. He takes random samples of 5 Thursdays, 5 Fridays, 5 Saturdays, and 5 Sundays from last year’s records and lists the revenues for these 20 days. His bookkeeper finds the average revenue for each of the four samples, and then calculates ∑x2. The results are shown in the following table. The value of the ∑x2 came out to be 2,890,000.

Assume that the revenues for each day of the week are normally distributed and that the standard deviations are equal for all four populations. At a 1% level of significance, can you conclude that the mean revenue is the same for each of the four days of the week?

Assume that the revenues for each day of the week are normally distributed and that the standard deviations are equal for all four populations. At a 1% level of significance, can you conclude that the mean revenue is the same for each of the four days of the week?

## Answer to relevant Questions

Suppose that you are a reporter for a newspaper whose editor has asked you to compare the hourly wages of carpenters, plumbers, electricians, and masons in your city. Since many of these workers are not union members, the ...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, ...The following ANOVA table, based on information obtained for three samples selected from three independent populations that are normally distributed with equal variances, has a few missing values. a. Find the missing values ...The following table gives the completion times for the winners in the women’s 200-meter dash finals in the Summer Olympic Games from 1972 to 2008. The times are in seconds rounded to the nearest 1/100 second. Olympic Year ...It seems reasonable that the more hours per week a full-time college student works at a job, the less time he or she will have to study and, consequently, the lower his or her GPA would be. a. Assuming a linear relationship, ...Post your question

0