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12 March, 22:19

Suppose that a group of 10 people join a weight loss program for 3 months. Each person'sweight is recorded at the beginning and at the end of the 3-month program. To testwhether the weight loss program is effective, how should be the data treated? Chooseone option.

Write down the test statistics.

a. independent samples using the normaldistribution.

b. paired samples using the t-distribution.

c. independent samples using thet-distribution.

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  1. 13 March, 00:36
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    b. paired samples using the t-distribution.

    Explanation:

    In statistics and research methods, the paired sample t-test or distribution is described as a technique that consists of two different "competing hypotheses" including the alternative hypothesis and the null hypothesis.

    The given test doesn't assume that the given variance of the given population is the same or equal. It is being used when an experimenter is interested in testing the difference between two different variables possessing the same subject yet these variables are being separated or divided by time.

    As per the question, the given statement represents the test statistics as paired samples using the t-distribution.
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