Question

1. If a sample of 20 children is selected, what is the probability that the sample mean: Standard Deviation= 22.4 mean= 191

1. • Is greater than 200 mg/dl?

   • Is less than 188 mg/dl?

   • Is between 188 and 190 mg/dl?

   • Using an x̄ of 188, what is the 95% confidence interval of µ?

   • Using an x̄ of 188, what is the 99% confidence interval or µ?

Answer 1

Hello

Given that:

n = 20

S.D. = 22.4

Mean = 191

(a) Is greater than 200 mg/dl?

(b) Is less than 188 mg/dl?

(c) Is between 188 and 190 mg/dl?

(d) Using an x̄ of 188, what is the 95% confidence interval of µ?

(e) Using an x̄ of 188, what is the 99% confidence interval or µ?

Thanks!

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