Question
The director of research and development is testing a new drug. She wants to know if...
The director of research and development is testing a new drug. She wants to know if there is evidence at the 0.05 level that the drug stays in the system for more than 318 minutes. For a sample of 44 patients, the mean time the drug stayed in the system was 323 minutes. Assume the population standard deviation is 18. Find the P-value of the test statistic.
Homework Answers
Answer #1
Null hypothesis
Alternative hypothesis
We have given,
Population mean for given example =318
Sample mean=323
Population standard deviation = 18
Sample size for given example = 44
Level of significance =0.05
Z test statistic formula
P value = 0.0327............................by using
1-NORMSDIST(1.843) in Excel.
P value is 0.0327 < 0.05
Therefore, we reject H0.
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