SCENARIO 12-18 A Consulting Firm That Surveyed Consumers' Holiday Shopping Behavior Found

question 44

Short Answer

SCENARIO 12-18
A consulting firm that surveyed consumers' holiday shopping behavior found that the percentage of
consumers from the U.S., Canada, and China who said that they planned to spend more on holiday
shopping were 40%, 34% and 72%, respectively. Random samples of size 150 are selected from each
of the three countries.
You want to test for evidence of a difference among the proportions across the three countries using
the 0.05 level of significance.
-Referring to Scenario 12-18, the test will involve _________ degrees of freedom.

---

Definitions:

Probability

The chance of an event taking place, shown as a numeric figure lying between 0 and 1.

Standard Normal Distribution

A probability distribution that has a mean of zero and a standard deviation of one, used as a basis in inferential statistics.

Probability

A measure of the likelihood that a specific event will occur, often expressed as a number between 0 and 1.

Standard Normal Distribution

A normal distribution with a mean of 0 and a standard deviation of 1.