SCENARIO 10-6 to Investigate the Efficacy of a Diet,a Random Sample of Sample

question 65

Short Answer

SCENARIO 10-6
To investigate the efficacy of a diet,a random sample of 16 male patients is selected 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 pounds with the standard deviation of differences computed as 6.0 pounds.
-Referring to Scenario 10-6,the computed t statistic is .

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Definitions:

Distribution

The process by which goods get distributed or spread out across different locations, or the statistical spread of values in a dataset.

Radiometric Dating

Method of estimating the age of a rock or fossil by measuring the content and proportions of a radioisotope and its daughter elements.

Volcanic Rocks

Igneous rocks that are formed from the solidification of lava or magma ejected from volcanoes.

Sedimentary Rock

A type of rock formed by the accumulation and consolidation of mineral and organic particles, precipitated from solution, or deposited as insoluble residue.