FINP 5001-Dottie’s Tax Service specializes in federal

1 1Dottie’s Tax Service specializes in federal tax returns for professional clients, such as physicians, dentists, accountants, and lawyers. A recent audit by the IRS of the returns she prepared indicated that an error was made on 12% of the returns she prepared last year. Assuming this rate continues into this year and she prepares 53 returns, what is the probability that she makes errors on:a.More than 6 returns? (Round z-score computation to 2 decimal places and your final answer to 4 decimal places.)Probabilityb.At least 6 returns? (Round z-score computation to 2 decimal places and your final answer to 4 decimal places.)Probabilityc.Exactly 6 returns? (Round z-score computation to 2 decimal places and your final answer to 4 decimal places.)Probability [The following information applies to the questions displayed below.] QUESTION 12The Bureau of Labor Statistics’ American Time Use Survey showed that the amount of time spent using a computer for leisure varied greatly by age. Individuals age 75 and over averaged 0.40 hour (24 minutes) per day using a computer for leisure. Individuals ages 15 to 19 spend 1.3 hour per day using a computer for leisure. If these times follow an exponential distribution, find the proportion of each group that spends:rev: 05_18_2015_QC_CS-14973a.Less than 21 minutes per day using a computer for leisure. (Round your answers to 4 decimal places.)ProportionAge 75 and overAges 15 to 1913. b.More than two hours. (Round your answers to 4 decimal places.)ProportionAge 75 and overAges 15 to 1914. .Between 42 minutes and 126 minutes using a computer for leisure. (Round your answers to 4 decimal places.)ProportionAge 75 and overAges 15 to 1915. d.Find the 28th percentile. seventy two percent spend more than what amount of time? (Round your answers to 2 decimal places.)Amount of time for individuals ages 75 and overminutesAmount of time for individuals ages 15 to 19minutes16.The cost per item at a supermarket follows an exponential distribution. There are many inexpensive items and a few relatively expensive ones. The mean cost per item is $10.50. What is the percentage of items that cost:a.Less than $7.50? (Round your answer to 4 decimal places.)Probability17. b.More than $11.50? (Round your answer to 4 decimal places.)Probability18.c.Between $8.50 and $10.50? (Round your answer to 4 decimal places.)Probability19. d.Find the 50th percentile. Fifty percent of the supermarket items cost more than what amount? (Round your answer to 2 decimal places.)Amount$Probability