The table below shows the amount of time in minutes it took to drain four different tanks.
Which tank drained the fastest per minute?
Tank
A
B
С
Capacity (gal) Time (m)
80
24
64
18
96
28
50
16
D

Arandom sample of 45 observations results in a sample mean of 68. the population standard deviation is known to be 23 a. compute the margin of error at a 959% confidence interval. b. compute the 95% confidence interval for the population mean c. compute the 90% confidence interval for the population mean. d. compute the 75% confidence interval for the population mean