Doing yoga with goats has been shown to increase the likelihood that a client wi

Question

Doing yoga with goats has been shown to increase the likelihood that a client will recommend a friend. In one study, a sample of 16 yoga classes were identified to have goats added to the class and number of client referrals over the following 3 months was tracked. Researchers already know that client recommendations are normally distributed and that the general population of yoga classes have a recommendation rate is 20%, mu equals 20 space a n d space sigma equals 25. The sample (n = 16) produces a mean score of M = 31. Calculate Cohen's d based on this information. Which one of the following is the answer?A. -0.44, B. 0.44, C. 1.76, D. 6.6

Explanation / Answer

Here COhen's d is = Mean difference/ Standard deviation

= (31 - 20)/25

= 11/25

= 0.44

Option B is correct

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