A Consumer Researcher Was Asked to Test a Claim by a Franchise

question 60

Essay

A consumer researcher was asked to test a claim by a franchise swimming instruction program. Specifically, they claimed that they could teach the average 7-year-old to swim across an Olympic-size pool in less than 2 hours. The researcher arranged for eight randomly selected 7-year-old children to take instruction at this school and kept a careful record of how long it took each child. The times (in minutes)were 60, 120, 110, 80, 70, 90, 100, and 130. What should the researcher conclude? Carry out a t test for a single sample (120 minutes is the "known" population mean)using the .01 significance level.
a. Use the five steps of hypothesis testing.
b. Explain what you did to a person who is familiar with hypothesis testing with a known population variance and a single sample, including understanding decision errors, effect size and power but knows nothing about t tests of any kind. Be sure to explain how this problem differs from a problem with a known population variance and a single sample.

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Definitions:

Cash

Money in the form of currency that can be used immediately for transactions, considered the most liquid asset.

Capital

Financial assets or the financial value of assets, such as cash and goods, used to start or operate a business.

Office Equipment

pertains to fixed, long-term assets used in an office environment for the business operations, such as computers, printers, and furniture, distinct from the broader term "equipment" by its office-specific use.

Open Account

A credit arrangement where the buyer pays the seller for goods or services at a later time, without the need for a formal loan agreement.