Mathematics, 17.12.2020 14:00, 10121545
Sam and Taylor own and operate a car wash service. Sam cleans the interior of each car and Taylor cleans the exterior. The time it takes Sam to finish the interior has a mean of 20 minutes with a standard deviation of 6.4 minutes. The time it takes Taylor to finish the exterior has a mean of 18 minutes with a standard deviation of 4.8 minutes. Both of their finishing times are approximately normally distributed.
Suppose we select a car at random, and define the random variable D as the difference between their finishing times. We can assume that their times are independent.
Find the probability that they finish within 10minutes of each other.
You may round your answer to two decimal places.
P\left(|D|<10\right)\approxP(ā£Dā£ <10)āP
Answers: 1
Mathematics, 21.06.2019 14:10, hardwick744
How many real and imaginary solutions does the equation x^2-3x=-2x-7 have?
Answers: 1
Mathematics, 21.06.2019 18:00, reinaelane77
Ling listed all of the factors of a mystery number: 1,2,4,8,16,32 what is the mystery number?
Answers: 2
Mathematics, 21.06.2019 22:30, tdyson3p6xvtu
60 musicians applied for a job at a music school. 14 of the musicians play both guitar and drums, 28 play drums, 18 play the guitar. what is the probability that the applicant who gets the job plays drums or guitar?
Answers: 1
Sam and Taylor own and operate a car wash service. Sam cleans the interior of each car and Taylor cl...
English, 14.07.2020 01:01
Mathematics, 14.07.2020 01:01
Mathematics, 14.07.2020 01:01
Mathematics, 14.07.2020 01:01
Business, 14.07.2020 01:01