What is the probability that x-bar is less than ninety five


Given a normal distribution with μ = 100 and σ =10, if you select a sample of size 25, what is the probability that x-bar is

a. less than 95
b. between 95 and 97.5
c. above 102.2
d. There is a 65% chance that x-bar is above what value?

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Basic Statistics: What is the probability that x-bar is less than ninety five
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