A choir director thinks that 15% of her choir doesnot read music. To test her cl

Question

A choir director thinks that 15% of her choir doesnot read music. To test her claim, she selected 35 choir membersand found that 6 could not read music. The test value for thishypothesis would be 1.34.    True orFalse Show how to calculate this problem also,please. A choir director thinks that 15% of her choir doesnot read music. To test her claim, she selected 35 choir membersand found that 6 could not read music. The test value for thishypothesis would be 1.34.    True orFalse Show how to calculate this problem also,please. Show how to calculate this problem also,please.

Explanation / Answer

probability that the choir can read music(the teacher thinks)=p = 0.15 probability that the choir can not read music= q =1-p=0.85

n = 35
expected value= = np = 35 x 0.15 = 5.25
= npq = (35 x 0.15 x 0.85) =4.4625 X = 6

test statistics, z = (X-)/ = (6-5.25)/4.4625 =0.168


n = 35
expected value= = np = 35 x 0.15 = 5.25
= npq = (35 x 0.15 x 0.85) =4.4625 X = 6

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