can have a mean weight of up to 3600/25=144 pounds. Assume that weights of males are normally distributed with a mean of 178 lb and a standard deviation of 26 lb. a. Find the probability that 1 randomly selected adult male has a weight greater than 144 lb. b. Find the probability that a sample of 25 randomly selected adult males has a mean weight greater than 144 lb. c. What do you conclude about the safety of this elevator? ... a. The probability that 1 randomly selected adult male has a weight greater than 144 lb is. (Round to four decimal places as needed.)

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 14PPS
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An elevator has a placard stating that the maximum capacity is 3600 lb-25 passengers. So, 25 adult male passengers
can have a mean weight of up to 3600/25= 144 pounds. Assume that weights of males are normally distributed with a
mean of 178 lb and a standard deviation of 26 lb.
a. Find the probability that 1 randomly selected adult male has a weight greater than 144 lb.
b. Find the probability that a sample of 25 randomly selected adult males has a mean weight greater than 144 lb.
c. What do you conclude about the safety of this elevator?
a. The probability that 1 randomly selected adult male has a weight greater than 144 lb is
(Round to four decimal places as needed.)
Transcribed Image Text:An elevator has a placard stating that the maximum capacity is 3600 lb-25 passengers. So, 25 adult male passengers can have a mean weight of up to 3600/25= 144 pounds. Assume that weights of males are normally distributed with a mean of 178 lb and a standard deviation of 26 lb. a. Find the probability that 1 randomly selected adult male has a weight greater than 144 lb. b. Find the probability that a sample of 25 randomly selected adult males has a mean weight greater than 144 lb. c. What do you conclude about the safety of this elevator? a. The probability that 1 randomly selected adult male has a weight greater than 144 lb is (Round to four decimal places as needed.)
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