8) Develop an effect size measure (roundto 2 decimal places) for Chapter 10 question 27 shown below:

A new weight-watching company, Weight Reducers International, advertises that those who join will lose an average of 10 pounds after the first two weeks. The standard deviation is 2.8 pounds. A random sample of 50 people who joined the weight reduction program revealed a mean loss of 9 pounds. At the 0.05 level of significance, can we conclude that those joining Weight Reducers will lose less than 10 pounds?

9) Develop an effect size measure (round to 2 decimal places) for Chapter 11 questions 21 shown below:

A recent study focused on the number of times men and women who live alone buy take-out dinner in a month. Assume that the distributions follow the normal probability distribution and the population standard deviations are equal. The information is summarized below.

Statistic Men Women

Sample mean 24.51 22.69

Sample standard deviation 4.48 3.86

Sample size 35 40

10) Develop an effect size measure (round to 2 decimal places) for Chapter 12 question 27 shown below:

In an ANOVA table, the MSE is equal to 10. Random samples of six were selected from each of four populations, where the sum of squares total was 250.

11) Develop an effect size measure (round to 2 decimal places) for Chapter 15 question 47 shown below:

Vehicles heading west on Front Street may turn right, turn left, or go straight ahead at Elm Street. The city traffic engineer believes that half of the vehicles will continue straight through the intersection. Of the remaining half, equal proportions will turn right and left. Two hundred vehicles were observed, with the following results. Can we conclude that the traffic engineer is correct? Use the 0.10 significance level.

Straight Right Turn Left Turn

Frequency 112 48 40

12) Develop an effect size measure (round to 2 decimal places) for Chapter 13 question 1 shown below:

The following sample observations were randomly selected.

x 4 5 3 6 10

y 4 6 5 7 7