Suppose you work as a manager for a large clothing store. You are considering introducing a loyalty program to encourage customers to spend more at your store. Before rolling out your program to the public, you want to do a small experiment to estimate its effectiveness. You offer the loyalty program to 22 random customers, and also observed the sales of 17 random customers who did not get the program as a control group. The customers that were part of the loyalty program had average monthly sales of $309.90 and a sample standard deviation of $47.14. For the control group, the customers had an average monthly sales of $261.93 and a sample standard deviation of $63.25. * Given a 95% confidence interval critical value of t = 2.10, what is the upper bound (upper end) of a 95% confidence interval for the difference between two averages? Use (loyalty program no loyalty program) for the order.

Suppose you work as a manager for a large clothing store. You are considering introducing a loyalty program to encourage customers to spend more at your store. Before rolling out your program to the public, you want to do a small experiment to estimate its effectiveness. You offer the loyalty program to 22 random customers, and also observed the sales of 17 random customers who did not get the program as a control group. The customers that were part of the loyalty program had average monthly sales of $309.90 and a sample standard deviation of $47.14. For the control group, the customers had an average monthly sales of $261.93 and a sample standard deviation of $63.25. * Given a 95% confidence interval critical value of t = 2.10, what is the upper bound (upper end) of a 95% confidence interval for the difference between two averages? Use (loyalty program no loyalty program) for the order.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section11.4: Collecting Data

Problem 6E

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