A Pharmaceutical Company Has Just Developed a New Capsule to Alleviate

question 43

Essay

A pharmaceutical company has just developed a new capsule to alleviate the symptoms of allergies and colds.However,they are concerned about the variability in the amount of time until the drug becomes effective.In a random sample of 10 individuals who suffer from allergies,the amount of time (in hours)for the capsule to take effect was recorded and listed as follows: 5,7,6,10,9,12,8,17,4,and 16.Estimate with 90% confidence the variance of the time for the drug to become effective.