Author Question: A point estimator of a population parameter is a rule or formula which tells us how to use sample ... (Read 79 times)

SAVANNAHHOOPER23 · **on:** Jun 24, 2018

A point estimator of a population parameter is a rule or formula which tells us how to use sample data to calculate a single number that can be used as an estimate of the population parameter.

A) True B) False

Question 2

Before a new phone system was installed, the amount a company spent on personal calls followed a normal distribution with an average of 900 per month and a standard deviation of 50 per month. Refer to such expenses as PCE's (personal call expenses). Using the distribution above, what is the probability that during a randomly selected month PCE's were between 775.00 and 990.00?

A) .9579 B) .0421 C) .0001 D) .9999