Question

2. (3 points) The diameter of ball bearings produced in a manufacturing process at a particular company can be explained using a uniform distribution. All the ball bearings produced have a diameter that ranges over the interval 3.5 milimeters to 5.5 milimeters. What is the probability that a randomly selected ball bearing will have a diameter greater than 4.4 milimeters? 3. (3.5 points) The monthly incomes of trainees at a local mill are normally distributed with a mean of $1050 and a standard deviation of s170 What percentage of trainees earn less than $1200 per month?

Answer 1

solulion 2) Given that 0.-3.5 b-5.5 P(x>c) - (b-c)/(b-a) P(x>4.4) : (5,5 -4.4.)/(5.5-3.5) P(X>4.4.) - 0.55 P(X>414) : 0.55 3) Given that, Mean - M-1050 plandaod deviation : 6:170 P(X<1200) - P[CX-) / < (1200 -- 1050)/170] - P(Z <0.88) using zlable -0-8106] The End Thank you. CS Scamged with Scanned with CamScanner