SOLUTION: A nationwide survey of 1001 people by the University of Connecticut Center for Survey Research and Analysis found that 20% of men aged 18 to 29 had tattoos. .Suppose that this

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Question 1178900: A nationwide survey of 1001 people by the University of Connecticut Center for Survey Research and Analysis found that 20% of men aged 18 to 29 had tattoos.
.Suppose that this result holds true for the current population of all men in this age group. Find the probability that in a random sample of 500 men aged 18 to 29, 80 to 110 have tattoos.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!

Hi
n = 500
mean= np = .20*500 = 100
variance = 100*.80 = 80
sd = √80
Using TI or similarly an inexpensive calculator like an Casio fx-115 ES plus

P( 80 < x < 110) = normalcdf(80,110, 100, √80) = .8556

Wish You the Best in your Studies.