2727 268268 99?% 0.010.01 A certain drug is used to treat asthma. In a clinical

Question

2727

268268

99?%

0.010.01

A certain drug is used to treat asthma. In a clinical trial of the? drug,

2727

of

268268

treated subjects experienced headaches? (based on data from the? manufacturer). The accompanying calculator display shows results from a test of the claim that less than

99?%

of treated subjects experienced headaches. Use the normal distribution as an approximation to the binomial distribution and assume a

0.010.01

significance level to complete parts? (a) through? (e) below. is the test two tailed, left tailed, right tailed? what is the test statistic? what it the p value? what is the null hypothesis and what does it conclude? decide whether to reject the null hypothesis? what is the final conclusion?

Explanation / Answer

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The significance level is .01

It is a left tailed test

Test statistic = p^-p/sqrt(p*p'/n) = ((268-27)/268)-.99 / sqrt(.99*.01/268) = -14.81

p-value is 0

Null hypothesis: Ho, p0 >= .99

Ha: p0<.99

The p-value of 0 concludes that null hypotheiss stands rejected

It means that we can conclude that p0<.99.

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