7.S11 WP SS VS A random sample of 36 observations has been drawn from a normal distribution with mean 50 and standard deviation 12. Find the probability that the sample mean is in the interval 47 ≤ x ≤ 53. Is the assumption of normality important? Why?

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A: Hours studiedTest score1780753901.5892.75971850.581280

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A: n=235,X=103,p=0.52α=0.05

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Q: What formula did you use for demand

A: What formula did you use for demand?

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A: The information provided in the question are as follows :-

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A: The hypotheses in this case will be:H0: H1:

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A: Let  be the cost, and      be the production.R Square:

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Q: Find the critical value tcrit. Assume normality and Ho: μ = 50 vs. Ha: µ< 50, n = 10, a = 0.01…

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A: From the provided information,

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