## An NHANES report gives data for 652 women aged 20 – 29 20–29 years. The BMI of these 652 652 women was ¯ x = 26.5 x¯= 26.5 . On the basis of

Question

An NHANES report gives data for 652 women aged 20 – 29 20–29 years. The BMI of these 652 652 women was ¯ x = 26.5 x¯= 26.5 . On the basis of this sample, we want to estimate the BMI μ μ in the population of all 20.6 20.6 million women in this age group. We treated these data as an SRS from a Normally distributed population with standard deviation σ = 7.2 σ=7.2 . Give three confidence intervals for the mean BMI μ in this population, using 90%, 95%, and 99% confidence. Enter the lower and upper bound for the 90% confidence interval.

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1 week 2021-09-15T18:07:42+00:00 1 Answer 0

Lower bound of 90% confidence interval: 26.04

Upper bound of 90% confidence interval: 26.96

Step-by-step explanation:

We are given the following in the question:

Sample mean, = 26.5

Sample size, n = 652

Population standard deviation, σ = 7.2

90% Confidence interval: Putting the values, we get,  