Question

72 Secion Exercse 38 Electric bills: According to a government energy agency, the mean monthly household electriaty billin the United States in 2011 was $109.54. Assume the amounts are normally distributed witilstandard devation $16.00. (a) Find the 9 percentile of the bill amounts. (b) Find the 65th percentile of the bill amounts. (c) Find the median of the bil amounts. Round the answers to at least two decimal places. Part: 0/3 Part 1 of:3 The 9th percentile of the bill amounts is 0 Next Part Submit Assignn

Answer 1

solu en (リ 54 2 - -1.30) 0.01 (t9.sy t I' (-1. 34.) 109 . sy-Q1.44 qte erte.kle ?Ha k" an cunj ;,扣0.48 2 0.38 53 = 109.54 tlc (o. 3853t X15. 70

amun . X0.50 2-0 X = 109.sy+k(D 709.54D X 109.sy