ction view Assessment 3 7.2.40 0.5 of 1 Point Question Help As reported by a rec

Question

ction view Assessment 3 7.2.40 0.5 of 1 Point Question Help As reported by a recent survey, the mean height of females 20 to 29 years old is ? = 64.3 inches. It height is approximately normally distributed with ?= 2.7 inches, answer the following questions. Click the icon to view a table of areas under the normal (a) What is the percentile rank of a 20-to 29-year-old female who is 81 inches tall? th percentile (Round to the nearest integer as needed ) Enter your answer in the answer box and then click Check Answer parts remaining Clear All

Explanation / Answer

Ans:

Given that

mean=64.3

standard deviation=2.7

For x=61 inch

z=(61-64.3)/2.7=-1.222

P(z<=-1.222)=0.1108

11th percentile

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