Question

​​​​​​​Please show work. Thank you

Problem 4 In order to test the durability of a new paint, a highway department had test strips painted across heavily traveled roads in 15 different locations. If on average, the test strips disappeared after they had been crossed by 146,692 cars with standard deviation of 14,380 cars, construct a 99% confidence interval for the true average number of cares it takes to wear off the paint. State any assumptions made in your answer.

Answer 1

Problemi, a: i\692 S2 111 380 VIS 3638.6a6b 7745.3034