Question 771241
a. What is the probability that a given microcomputer will:
i. Take between 70 and 80 minutes to be assembled?
ii. Will be assembled within 62 minutes?
iii. Take between 56 and 72 minutes to be assembled?
b.find the following probabilities for the standard normal distribution,z:
i. P(z>1.5)
ii. P(z<-0.68) 

Answers

a)

 i) 0.341
ii) 0.212
iii) 0.499

b)

i) 0.067
ii) 0.248

You can ask me more at: mthman@gmail.com

Thanks