Answer:
d) CONFIDENCE.NORM
Step-by-step explanation:
Given that a bank manager wishes to estimate the average waiting time for customers in line for tellers.
A random sample of 50 times is measured and the average waiting time is 5.7 minutes. n =50: mu = 5.7 and sigma = 2
To construct a confidence interval we use excel function as
d) CONFIDENCE.NORM
a) is wrong because this is to get normal x value
b ) is to get left tailed t inverse value
c) INT is to get the integer part of a decimal number
Option d is right
