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#8 and 9 please asap Question 8 (1 point) Let X1.....Xn be a random sample from some portion with Ex2 = 34334, Ex = 3446,

#8 and 9 please asap
Question 8 (1 point) Let X1.....Xn be a random sample from some portion with Ex2 = 34334, Ex = 3446, and n= 359. What is the 99% confidence interval for the population mean? Please choose the best answer. a) 9.599 + 0.142 O b) 9.599 + 0.127 O c) 9.599 + 0.163 O d) 9.599 + 0.203 O e) 9.599 + 0.255 MacBook Airt-Distribution (critical values) (click on the link) Formulas (click on the link) Question 9 (1 point) Suppose x is a normal random variable with o=3 and we have that P(x

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