The director of research and development is testing a new drug. She wants to know if there is evidence at the0.02level that the drug stays in the system for more than330minutes. For a sample of53patients, the mean time the drug stayed in the system was 334minutes. Assume the standard deviation is known to be20.

Step 1 of 5:Enter the hypotheses:

Step 2 of 5:Enter the value of theztest statistic. Round your answer to two decimal places.

Step 3 of 5:Specify if the test is one-tailed or two-tailed.

Step 4 of 5:Enter the decision rule.

Step 5 of 5:Enter the conclusion.