STATS :

3.

Construct the indicated confidence interval for the population mean u using the t-distribution. Assume the population is normally distributed. C = 0.99, x = 12.1, s= 3.0, n= 7 . . . (Round to one decimal place as needed.)Find the minimum sample size n needed to estimate p for the given values of c, o, and E. 0:098, 6 = 5.2. and E =2 Assume that a preliminary sample has at least 30 members. n = D (Round up to the nearest whole number.)