Could someone assist me with this problem. Must show work?

.MxPie ' iReview ' aDictionaE J acalculator 1-HAsstanment5 ' ook I a Gradebook J ilcalendar Multiple myeloma is a form of cancer. For decades, there was no known treatment. Rather recently, though, doctors surmised that the drug Thalidomide, which was given to pregnant women in the 1950 s but was subsequently found to cause birth defects, may extend the lives of those afflicted with multiple myeloma. In an extensive clinical trial, 28 patients diagnosed as having multiple myeloma were treated with Thalidomide, and the subsequent number of months that each survived was recorded. Suppose that the data are summarized in the following histogram: Frequency 15 12 10 6 6 5 0 O 10 2O 30 Survival time (in months) 40 \" Intro stat If you do this problem incorrectly 2 more times, we will practice another question. Based on this histogram, estimate the standard deviation of the sample of 28 survival times. Carry your intermediate computations to at least four decimal places, and round your answer to at least one decimal place. (If necessary, consult a list of formulas.)