# Question

A bank conducts a survey in which it randomly samples 400 of its customers. The survey asks the customers which way they use the bank the most: (1) interacting with a teller at the bank, (2) using ATMs, or (3) using the bank’s Internet banking service. It also asks their level of satisfaction with the service they most often use (on a scale of 0 to 10 with 0 = very poor and 10 = excellent). Does mean satisfaction differ according to how they most use the bank?

a. Identifying notation, state the null and alternative hypotheses for conducting an ANOVA with data from the survey.

b. Report the df values for this ANOVA. Above what F test statistic values give a P-value below 0.05?

c. For the data, F = 0.46 and the P-value equals 0.63. What can you conclude?

d. What were the assumptions on which the ANOVA was based? Which assumption is the most important?

a. Identifying notation, state the null and alternative hypotheses for conducting an ANOVA with data from the survey.

b. Report the df values for this ANOVA. Above what F test statistic values give a P-value below 0.05?

c. For the data, F = 0.46 and the P-value equals 0.63. What can you conclude?

d. What were the assumptions on which the ANOVA was based? Which assumption is the most important?

## Answer to relevant Questions

Each of 100 restaurants in a fast-food chain is randomly assigned one of four media for an advertising campaign: A = radio, B = TV, C = newspaper, D = mailing. For each restaurant, the observation is the change in sales, ...For the House Selling Prices OR data file on the text CD, the output shows the result of conducting a two-way ANOVA of house selling prices (in thousands) by the number of bedrooms in the house and the age (New, Medium, Old, ...Refer to Example 12, the sample means from which are shown again below. a. Explain how to obtain the following interpretation for the interaction from the sample means: “For females there is no race effect on ideology. For ...Refer to the previous exercise. a. Find the margin of error for constructing a 95% confidence interval for the difference between any pair of the true means. Interpret by showing which pairs of bumpers (if any) are ...For the FL Student Survey data file on the text CD, we use as the response variable sports (the number of weekly hours engaged in sports and other physical exercise). For the explanatory variables, we use gender and whether ...Post your question

0