20 years old women’s weighs have a population standard deviation σ = 20 lb. The distribution is right-skewed. Suppose we take a random sample of 100 of 20 years old women’s weights, with a sample mean of 128 lb. What will the margin of error be for the mean of women’s weights considering a level of confidence of 98%? What is the confidence interval of the mean of 20 years old women’s weights?

20 years old women’s weighs have a population standard deviation σ = 20 lb. The distribution is right-skewed. Suppose we take a random sample of 100 of 20 years old women’s weights, with a sample mean of 128 lb. What will the margin of error be for the mean of women’s weights considering a level of confidence of 98%? What is the confidence interval of the mean of 20 years old women’s weights?

Calculus For The Life Sciences

2nd Edition

ISBN:9780321964038

Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Chapter13: Probability And Calculus

Section13.2: Expected Value And Variance Of Continuous Random Variables

Problem 10E

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Question

20 years old women’s weighs have a population standard deviation σ = 20 lb. The distribution is
right-skewed. Suppose we take a random sample of 100 of 20 years old women’s weights, with a
sample mean of 128 lb. What will the margin of error be for the mean of women’s weights
considering a level of confidence of 98%? What is the confidence interval of the mean of 20 years
old women’s weights?

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