Suppose you wish to estimate a population mean correct to within 0.16

0.16 with a confidence level of .90. You do not know sigma squared

2, but you know that the observations will range in value between 37

37 and 45

45. Complete parts a and b.

a. Find the approximate sample size that will produce the desired accuracy of the estimate. You wish to be conservative to ensure that the sample size will be ample for achieving the desired accuracy of the estimate.(Hint: assume that the range of the observations will equal 4sigma

.)

The approximate sample size is

nothing

. (Round up to the nearestinteger.)

b. Calculate the approximate samplesize, making the less conservative assumption that the range of the observations is equal to 6sigma

.

The approximate sample size is

nothing

. (Round up to the nearestinteger.)