Question

normal population has mean =μ10 and standard deviation =σ7. (a) What proportion of the population is less than 18? (b) What is the probability that a randomly chosen value will be greater than 3? Round the answers to four decimal places. Part 1 of 2 The proportion of the population less than 18 is . Part 2 of 2 The probability that a randomly chosen value will be greater than 3 is .

Answer 1

X ~ (10 , 7)

a).the proportion of the population is less than 18 be:-

[ in any blank cell of excel type =NORMSDIST(1.1429) ]

b).The probability that a randomly chosen value will be greater than 3 is :-

[ using standard normal table ]

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