Question: (12) Determine the sample size necessary under the following conditions.

a. To estimate µ with σ=.44, interval half width is 3, and 95% confidence

b. To estimate µ with a range of values from from 20 to 88 with B=2 and 90% confidence. Hint: Sometimes when the standard deviation is not known, it is acceptable to use the range of the values of x divided by 4 to get an estimate of the standard deviation. Use that in this problem.

c. To estimate p with with B=.04 and 98% confidence.

d. To estimate p with B=.03, 95% confidence, and p thought to be approximately .70.