Question

7.Twenty people were attacked by a disease and only 18 were survived. The hypothesis is set in such a way that the survival rate is 85% if attacked by this disease. Will you reject the hypothesis that it is more at 5% level (z0.05=1.645)

Answer 1

Answer:

Step-by-step explanation:

Ho: p = 0.85 (claim)

Ha: p # 0.85

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p-hat = 18/20 = 0.9

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z(0.9) = (0.9-0.85)/sqrt[0.85*0.15/20] = 0.6282

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p-value = 2*P(z > 0.6262) = 2*0.2656 = 0.53

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Since the p-value is greater than 5%, fail to reject Ho.

The test results support the claim.

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