A normally distributed population has a mean of 450 and a standard deviation of 40. a. Determine the probability that a random sample of size 16 selected from this population will have a sample mean less than 429. b. Determine the probability that a random sample of size 25 selected from the population will have a sample mean greater than or equal to 464. a. P(x<429) = O (Round to four decimal places as needed.)

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.3: Special Probability Density Functions
Problem 8E
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Answer both A & B please!

A normally distributed population has a mean of 450 and a standard deviation of 40.
a. Determine the probability that a random sample of size 16 selected from this population will have a sample mean less than 429.
b. Determine the probability that a random sample of size 25 selected from the population will have a sample mean greater than or equal to 464.
a. P(x<429) =
(Round to four decimal places as needed.)
Transcribed Image Text:A normally distributed population has a mean of 450 and a standard deviation of 40. a. Determine the probability that a random sample of size 16 selected from this population will have a sample mean less than 429. b. Determine the probability that a random sample of size 25 selected from the population will have a sample mean greater than or equal to 464. a. P(x<429) = (Round to four decimal places as needed.)
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