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31 October, 07:04

Suppose that you had consumer group wanted to test to see if weight of participants in a weight loss program changed (up or down). They computed a 95% confidence interval of the result (-4.977, 2.177). What do we know about the p-value for the test?

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  1. 31 October, 07:18
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    What we know about the p-value for the test is that it will be less than 0.05

    Step-by-step explanation:

    The complete question is as follows;

    Suppose that you had consumer group wanted to test to see if weight of participants in a weight loss program changed (up or down). They computed a 95% confidence interval of the result (-4.977, - 2.177). Suppose that we had a significance test with the following hypothesis:

    H0: population mean weight loss = 0

    Ha: population mean weight loss does not equal 0

    What do we know about the p-value for the test?

    solution;

    Given the information in the question, we are concerned with saying what we know about the p-value for the test

    To answer this question, we shall be looking at it from the angle of the confidence interval

    The confidence interval given is 95%.

    Now what does this indicate?

    It indicates that 95% confidence interval contains only values which are less than 0.

    What does this mean for the p-value?

    This means that the p-value will be less than 0.05
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