19 Dec A statistics practitioner determined that the mean
A statistics practitioner determined that the meanand standard deviation of a data set were 120 and 30,respectively. What can you say about the proportionsof observations that lie between each of the followingintervals?a. 90 and 150b. 60 and 180c. 30 and 210Xr04-31 There has been much media coverageof the high cost of medicinal drugs in the UnitedStates. One concern is the large variation frompharmacy to pharmacy. To investigate, a consumeradvocacy group took a random sample of 100 pharmaciesaround the country and recorded the price(in dollars per 100 pills) of Prozac. Compute therange, variance, and standard deviation of the prices.Discuss what these statistics tell you.