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29 January, 12:08

It takes four years for an undergraduate student to graduate with a bachelor's degree. A study reports that only 41% of full-time students graduate from universities in four years. The sample of 8 years has a mean of 37.2 and a standard deviation of 4.9. Is there sufficient evidence to support the report's claim?

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  1. 29 January, 14:11
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    Yes

    Step-by-step explanation:

    One sample t test can be used to find if the claim is true or not.

    Degrees of freedom = 8

    t-statistic can be calculated from : (sample mean-population mean) / (standard deviation/√sample size)

    Once the t-statistic is known, it can be compared with p-value obtained from t-table and conclusion made
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