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A: we will observe the histogram properly

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Q: If X is normally distributed with a mean of 50 and a standard deviation of 4. If you take a sample…

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Q: 7.29 only

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Q: A linear regression analysis is used to analyze the relationship of the sleep time the night before…

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A: Given that.   X~N( μ , ?^2 )   Z-score =( x - μ )/?

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Q: Question #4 What percent of cases in a normal distribution falls between Z = -1.00 and Z = 0.5?

A: Given that.   X~N( μ , ?^2 )   μ=0     , ?=1  for standard normal distribution.      Z-score =( x -…