A normal population has mean l=7 and standard devlation a 8, (a) What proportion of the population is less than 20? (b) What is the probability that a randomly chosen value will be greater than 4? Round the answers to four decimal places. Part 1 of 2 The proportion of the population less than 20 is Part 2 of 2 The probability that a randomly chosen value will be greater than 4 is

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A normal population has mean i=7 and standard devlation a= 8.
(a) What proportion of the population is less than 20?
(b) What is the probability that a randomly chosen value will be greater than 4?
Round the answers to four decimal places.
Part 1 of 2
The proportion of the population less than 20 is
Part 2 of 2
The probability that a randomly chosen value will be greater than 4 is
Transcribed Image Text:A normal population has mean i=7 and standard devlation a= 8. (a) What proportion of the population is less than 20? (b) What is the probability that a randomly chosen value will be greater than 4? Round the answers to four decimal places. Part 1 of 2 The proportion of the population less than 20 is Part 2 of 2 The probability that a randomly chosen value will be greater than 4 is
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