Author Question: An executive with a fast food restaurant believes a street located near a major highway interchange ... (Read 129 times)

mikaylakyoung · **on:** Jun 24, 2018

An executive with a fast food restaurant believes a street located near a major highway interchange will be a profitable location. A random sample of sixty days is taken to estimate the average cars per day passing by the location. On the basis of the sample data, the executive concludes that the average is not high enough to yield a profitable outlet. Six months later a competitor builds at the same location and reports it to be one of its best-profit new stores. Describe the type of error made by the executive.

Question 2

What is a two-tail test?

ebonylittles · **Reply #1 on:** Jun 24, 2018

Answer to Question 1

Apparently a minimum number of cars passing by the location is needed to be profitable. Since the average number of cars in the sample was not enough to make a profitable outlet in the judgment of the executive, he rejected the hypothesis of profitability. When another company built a store on the same location , which was profitable, it showed the mistake, which had been made. In statistical terms, the executive committed a Type I error (erroneously rejecting a true null hypothesis).

Answer to Question 2

A two-tail test is one in which a null hypothesis can be rejected by an extreme result occurring in either direction.