The sampling distribution for the difference in proportions is the result of subtracting one sampling distribution for the proportion from a second sampling distribution for the proportion.
Indicate whether the statement is true or false
Question 2
Costco installs automobile tires on a first-come first-serve basis.
The total time a customer needs to wait for the installation to be completed follows the normal distribution with a mean time of 106.3 minutes and a standard deviation of 18.5 minutes. The interval around the mean that contains 68 of the wait time for customers is ________.
A) 87.8, 124.8
B) 69.3, 143.3
C) 50.8, 161.8
D) 32.3, 180.3