P(X<45)= P Z < 45 - ( ) 10 = = P(Z < 3.16) = ( )

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter1: Fundamental Concepts Of Algebra
Section1.4: Fractional Expressions
Problem 70E
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Suppose you have a normal population of quiz scores, with mean 40 and standard deviation 10. Select a random sample of 40. What is the chance that the mean of the quiz scores will not exceed 45? Use a sampling distribution of sample means to calculate the standard error; fill in the blank below.  

       

45 - ( )
efect))
10
P(X<45) = P Z <
= P(z < 3.16) = (
)
Transcribed Image Text:45 - ( ) efect)) 10 P(X<45) = P Z < = P(z < 3.16) = ( )
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