? Find the market estimates tor the mean and variance (p and .72) b. GOOD )".959‘,, and 29% confidence intervals for p end ,2 In constructing the confidence interval for the population vanarxe uee the...

? Find the market estimates tor the mean and variance (p and .72) b. GOOD )".959‘,, and 29% confidence intervals for p end ,2 In constructing the confidence interval for the population vanarxe uee the unbiased estimate for a2, not the m:*
c Thing the results from pert (b) give OM 25%. end 2g4r. cora/ems intervals for a
d 1-1.7w much Larger a sample do you think you vic,uld need to halve the length of the intatval for p7
Q2) The manager of a supermarket would like to know the average time that perms spade it the checkout counter Using e eicliwatc174 he observes' MO customers. He computed the ample m..en to be 15.35 minute, end the ample rtenclud deviation to be a a, 8 1 minutes
& Couitzuct a 9S'It confIdiwic¦ interval for the population mean p
b Supp-ce* that the grietreger velintOa em &Ilea am* In motion &Lift (millet thin whit you found in (e)) H. Svantil his etror to be ±1 minute with g5% cm:ids:Ice How many rust men will be roe& For Ws question assume 17 le 6 1 minutes