Sign C Quiz: Chapter 9 Review Quiz This quiz: 9 point(s) E (9.1-9.2) (9)

Quiz: Chapter 9 Review Quiz (9.1-9.2) (9) fistic Question 5 of 9 This quiz: 9 point(s) possible This question: 1 point(s) possible Submit quiz A paint manufacturer made a modification to a paint to speed up its drying time, Independent simple random samples of II cans of type A (the original paint) and 9 cans of type B (the modified paint) were selected and applied to similar surfaces. The drying times, in hours, were recorded. The summary statistics are as follows. Type A -76.3 hr Sl =4.5 hr ni = 11 Type B s2 = 5.1 hr The following 98% confidence interval was obtained for the difference between the mean drying time for paint cans of type A and the mean drying time for paint cans of type What does the confidence interval suggest about the population means? ary 4.90 hr