do C part 3. (a) Susan tries to exercise at "Pure Fit" Gym each day of the week, except on the weekends(Saturdays and Sundays). Susan is able to exercise, on average, on 75% of the weekdays(Monday to Friday).i. Find the expected value and the standard deviation of the number of days sheexercises in a given week.ii. Given that Susan exercises on Monday, find the probability that she will exercise atleast 3 days in the rest of the week.iii. Find the probability that in a period of four weeks, Susan exercises 3 or less days inonly two of the four weeks.(b) A car repair shop uses a particular spare part at an average rate of 6 per week. Find theprobability that:i. at least 6 are used in a particular week.ii. exactly 18 are used in a 3-week period.iii. exactly 6 are used in each of 3 successive weeks.(c) The breaking strength (in pounds) of a certain new synthetic piece of glass is normallydistributed, with a mean of 115 pounds and a variance of 4 pounds.i. What is the probability that a single randomly selected piece of glass will havebreaking strength between 118 and 120 pounds?ii. A new synthetic piece of glass is considered defective if the breaking strength is lessthan 113.6 pounds. What is the probability that a single randomly selected piece ofglass will be defective?iii. What is the probability that out of 200 pieces of randomly selected glass, more thanfifty-five of them are defective.

c) Let us define the variable X as the breaking strength of a certain new synthetic piece of glass…

The breaking strength (in pounds) of a certain new synthetic piece of glass is normally distributed, with a mean of 115 pounds and a variance of 4 pounds. i. What is the probability that a single randomly selected piece of glass will have breaking strength between 118 and 120 pounds? ii. A new synthetic piece of glass is considered defective if the breaking strength is less than 113.6 pounds. What is the probability that a single randomly selected piece of glass will be defective? iii. What is the probability that out of 200 pieces of randomly selected glass, more than

The breaking strength (in pounds) of a certain new synthetic piece of glass is normally distributed, with a mean of 115 pounds and a variance of 4 pounds. i. What is the probability that a single randomly selected piece of glass will have breaking strength between 118 and 120 pounds? ii. A new synthetic piece of glass is considered defective if the breaking strength is less than 113.6 pounds. What is the probability that a single randomly selected piece of glass will be defective? iii. What is the probability that out of 200 pieces of randomly selected glass, more than

College Algebra

10th Edition

ISBN:9781337282291

Author:Ron Larson

Publisher:Ron Larson

Chapter8: Sequences, Series,and Probability

Section8.7: Probability

Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....

See similar textbooks