X1 =3157 X2 =3038 X3=3111 X4=3014 AVERAGE=3080 a) Calculate |xbar-3000| b) Calculate 2|xbar-3000| c) what is the probability a sample mean profit X is more than $3080 if n=4 and profit X is normally distributed with mean $3000 with standard deviation $200 d) What is the 78.81th percentile of the sample mean xbar if X is normally distributed with mean 3000 and standard deviation 200 and n=4" Answer: e) What is the 78.81 th percentile of X if X is normally distributed with mean 3000 and standard deviation 200 Answer:
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We are given the average as 3080, so x̄ = 3080. Show more…
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