Question

suppose the average age for registered voters is mu = 39.60 years with sigma = 11.60 years, and that the distribution of ages is normal. During a recent jury trial, a statistician noticed that the average age of the 12 jurors was 50.34 years,

a) how likely is it to obtain a jury this old or older by chance?

b)is it reasonable to conclude that this jury is not a random sample of registered voters? explain your answer. (a yes or no answer, even if correct, will not be sufficient to earn marks for part b) - an explanation of your reasoning must be provided.)

Answer 1

solution in = 39.60 6 = 11.60 ($250.34) = P122 50.34 - 39.60 ) $25*24 1.60 via - 1-Plzc3.21) - Plzz 3.21) Ives It is reasonable to cond is not random because it is very unlikle to have somple men of 50.34 of older.