Instruction 10-7
to Investigate the Efficacy of a Diet, a Random

question 145

Short Answer

Instruction 10-7
To investigate the efficacy of a diet, a random sample of 16 male patients is drawn from a population of adult males using the diet. The weight of each individual in the sample is taken at the start of the diet and at a medical follow-up 4 weeks later. Assuming that the population of differences in weight before versus after the diet follow a normal distribution, the t-test for related samples can be used to determine if there was a significant decrease in the mean weight during this period. Suppose the mean decrease in weights over all 16 subjects in the study is 3.0 kilograms with the standard deviation of differences computed as 6.0 kilograms.
-Referring to Instruction 10-7,if you were interested in testing against the two-tailed alternative that ${ } ^ { \mu } \bar { D }$ is not equal to zero at the $\alpha$ = 0.05 level of significance,you would__________ (reject/not reject)the null hypothesis.

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Definitions:

Adjusted Trial Balance

A financial statement listing all accounts and their balances after adjusting entries have been made, ensuring the total debits equal total credits.

Close Revenue

The process of transferring the balances of all revenue accounts to the income summary account at the end of an accounting period.

Expense Accounts

Accounts used in accounting to record all expenses a company incurs during a specific period.

Adjusted Trial Balance

An adjusted trial balance is a listing of all company accounts that will appear in the financial statements after adjusting entries have been made for the accounting period.