A population is estimated to have a standard deviation of 8. We want to estimate the population mean within 2, with a 90% level of confidence

How large a sample is required (Round up your answer to the next whole number)

sample required is

Sample = (zcrit x sigma / m) ^2. Here z frit for 90% CI is 1.645

So sample = ( 1.645 x8 /4 ) ^2

= ( 6.58) ^2

= 43.3

Round up to 44

Answer sample : 44

I have answered your question.

Niru

Secure Information

Content will be erased after question is completed.

Enter the email address associated with your account, and we will email you a link to reset your password.

Forgot your password?

Sign Up