Res 342 Week 3 Quiz

Week 3 quiz in RES 342(r5)

The quiz is worth a total of 10 points. This assignment is due on Monday of week 3.

This is an individual effort! If you receive other human assistance, you must document it when you submit the quiz. I'll consider this assistance in determining your score. Of course, you’re encouraged to seek any published assistance or any assistance on the Internet, provided that you document such assistance. (This may even help your score).

3-35. (p 105) 5 points

A research firm wants to compare the miles per gallon of unleaded regular, mid-grade,

and super premium gasolines. Because of differences in the performance of different automobiles, seven different automobiles were selected and treated as blocks. Therefore, each brand of gasoline was tested with each type of automobile. The results of the trials, in miles per gallon, are shown in the following table. At the .05 significance level, is there a difference in the gasolines and automobiles?

HO: All the gas price results are the same.

HA: More or more are different.

Run a ANOVA test (http://www.danielsoper.com/statcalc/calc43.aspx)

Chi-Square = 19.33

P = .021

P is < .05

Since p < the significance level, accept the null.

3-75. (p 133) 5 points

A sample of employees at a large chemical plant was asked to indicate a preference for one of three pension plans. The results are given in the following table. Does it seem that there is a relationship between the pension plan selected and the job classification of the employees? Use the .01 significance level.

HO: There is no relationship between the pension plan and job classification

HA: There is a relationship between the pension plan and job classification

Run a ANOVA test (http://www.danielsoper.com/statcalc/calc43.aspx)

P = .29808

P > 0.1

Accept the null. There is no relation