Searc k for Chapter 9-3352. (1) Protected View - Saved Help View Review Mailings rences t can contain viruses. Unless you need to edit, it's safer to stay in Protected V Reactivate rruption, please...

Extracted text: Searc k for Chapter 9-3352. (1) Protected View - Saved Help View Review Mailings rences t can contain viruses. Unless you need to edit, it's safer to stay in Protected V Reactivate rruption, please reactivate now. 1. The average wind speed in Casper, Wyoming, has been found to 12.7 miles per hour, and in Phoenix, Arizona, it is 6.2 miles per hour. To test the relationship between the averages, the average wind speed was calculated for a sample of 31 days for each city. The results are reported below. Is there sufficient 0.05 to conclude that the average wind evidence at a speed is greater in Casper than in Phoenix? Casper Phoenix 31 Sample size 31 Sample mean 12.85 mph 7.9 mph Population standard deviation 3.3 mph 2.8 mph