Given a normal distribution with =50 and =5, and given you select a sample n=100 What is the probability that Upper x is between 49 and 51.5 ?

Given a normal distribution with μ=50 and σ=5​, and given you select a sample n=100​

is between

A set of final examination grades in an introductory statistics course is normally​ distributed, with a mean of 72 and a standard deviation of 9

25

25

A study reports that 36​% of companies in Country A have three or more female board directors. Suppose you select a random sample of 100 respondents.

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