MINDTAP Homework (REQUIRED;: Chapter &End-of-Chapter; Problems AaAa chapters-End

Question

MINDTAP Homework (REQUIRED;: Chapter &End-of-Chapter; Problems AaAa chapters-End-of-chapter question 13 11. Gravetter/Wallhau/orzane, Essentials-C poplato, with mean of . 40ard a standard deviation of e-10, A A randiom sample is selected From a normal to the rivdasthe sample. The sample mean is found to be M-46.Mow large a sample is necessary for this sample mean to be statist icaly sytat? Amrne a b taled test wit:#AS, and use the Detbeons tool to help The sample sice must be than ofor larger is needed r the sample mean woeM43, what sample size is needed to be significant for a two-tailed test with o5 sce mut be than a sampie ofor larger is needed. lype here to search LG

Explanation / Answer

Result:

Sample size must be greater than 30, a sample of n=11 or larger is needed.

Sample size for single mean

For 95%, z=1.96

d=6

sd=10

Sample size = (z2*s2)/d2

= (1.962*102)/62

=10.67

The sample size required= 11

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