Q 14 / Statistics and Probability

'D A survey looked at how long ittakes a typiual company to recoup an Investment In research, The survey determined that 25% of the corporations took six months or less to recoup their investment The data table below shows a sample of the time, in months' it might have taken 20 corporations to recoup their investment, Complete parts a and b, 7!] 3,5 85 85 7,0 9:] 10!] T5 9!] 75% 8!) 55 8t) 9!) 5,5 12!) 55 115 75 55 a. Determine the number of corporations that recovered their investement in research in six months or less. There were corporations that recovered their investment in research in six months or less, b Calculate the probability of obtaining at most the number of corporations that you determined in part a if the percent of those reoovenng their investment is as indicated by the survey The probability is (Round to four decimal places as needed )