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4 January, 02:37

A scientist is studying the impact of certain vitamins on a person's ability to remember. The sample size for the experimental group was 25. When a two-tailed t test was calculated, the t statistic came out to be 1.54. What are the percent of variance (r 2) and the size of the effect

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  1. 4 January, 04:46
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    0.09 average effect

    Step-by-step explanation:

    Given that the t statistics = 1.54

    Sample size (n) = 25

    Therefore, variance = t²/n

    Variance = 1.54²/25

    Variance = 2.372/25

    Variance = 0.09
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