Question 898981
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Hi
Ho: p >= 0.7 (government claim)
Ha: p < 0.7 (sample of 25: p = 15/25 = 3/5 = .6)
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test stat:: z(.6) = (0.6-0.7)/sqrt[0.7*0.3/25] = -.1/.0917 = -1.09
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p-value = P(t < -1.09 when df = 24) = tcdf(-1.09,100,24) = .1433 0r 14.33%
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Conclusion: since the p-value > 1%, accept the government's claim