The director of research and development is testing a new medicine. The director claims that the mean time in which the medicine relieves pain is less than 309 seconds. For a random sample of 23 patients, the mean time in which the medicine relieved pain was 296 seconds with a standard deviation of 24 seconds. Using a level of significance of 0.05, is there sufficient evidence to support the director’s claim? Assume the population distribution is approximately normal.
Step 2 of 5 : Find the value of the test statistic. Round your answer to three decimal places.
MathBot Answer:
MathBot is working on a solution to your problem.
