Question

Consider a normal population with μ = 37 and σ = 4.3. Calculate the z-score for an x of 48.5 from a sample of size 11. (Give your answer correct to two decimal places.)

You may need to use the appropriate table in Appendix B to answer this question.

Answer 1

if x given

solution : ×N N (μ-37, σー43 Let avc ltuld ㄨㄧㄙ 85-31 う,3 乙 =2.67

if xbar given