A random sample of six salespersons that attended a motivational course on sales techniques was monitored three months before and three months after the course. The table shows the values of sales (in thousands of dollars) generated by these six salespersons in the two periods. Salesperson Before the Course After the Course C 1 213 232 2 286 284 3 4 208 319 5 156 200 6 202 187 Assume that the population distributions are normal. Find a 99% confidence interval for the difference between the two population means. What is the confidence interval estimate of the mean difference (Hafter - Hbefore)? (Round to two decimal places as needed.) 192 334
A random sample of six salespersons that attended a motivational course on sales techniques was monitored three months before and three months after the course. The table shows the values of sales (in thousands of dollars) generated by these six salespersons in the two periods. Salesperson Before the Course After the Course C 1 213 232 2 286 284 3 4 208 319 5 156 200 6 202 187 Assume that the population distributions are normal. Find a 99% confidence interval for the difference between the two population means. What is the confidence interval estimate of the mean difference (Hafter - Hbefore)? (Round to two decimal places as needed.) 192 334
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section: Chapter Questions
Problem 22SGR
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