QUESTION/ SOALAN MARKS/MARKAH A pharmaceutical firm has requested that a medical doctor to observe whether a new version of drug shorten the length of time it takes for a patient to feel the benefits of the medication. The doctor has administered the older version and the new version drug to independent random samples of his patients, and summarized the outcome as in Table 4. Based on the summary, conduct an appropriate hypothesis test to test whether the claim is true using a = 0.05. Table 4 Summary Old Version New Version Sample size 65 50 Sample mean 80 minutes 65 minutes Sample standard deviation 10 minutes 14 minutes