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Men have an average weight of 172pounds with a standard deviation of 29pounds.

a. Find the probability that 20randomly selected men will have a sum weight greater than 3600lbs.

b. If 20 men have a sum weight greater than 3500lbs, then their total weight exceeds the safety limits for water taxis. Based on (a), is this a safety concern? Explain.

Short Answer

Expert verified

(a)1-.8913=0.1087

(b) If the20men's sum weight greater than 3500lbsexceeds then it will exceeds the safety limits for water taxis because the probability will be less. Hence it is a safety concern.

Step by step solution

01

Part (a) Step 1: Given information

Given in the question that, Men have an average weight of 172 pounds with a standard deviation of 29 pounds.

02

Part (a) Step 2: Explanation

According to the provided details, average weight is μ=172pounds, standard deviation σ=29pounds.

Use the T I-83 calculator to determine the likelihood that 20 randomly picked males will have a total weight more than3600lbs, To do so, go to 2nd,then DISTR, and then scroll down to the normalcdf option and fill in the required information. After that, press the calculator's ENTER key to get the desired result. The following is a screenshot:

Therefore, the probability that 20randomly selected men will have a sum weight greater than 3600labs is approximately:1-.8913=0.1087.

03

Part (b) Step 1: Given information 

Given in the question that, Men have an average weight of 172 pounds with a standard deviation of 29 pounds.

04

Part (b) Step 2: Explanation

According to the provided details, average weight is μ=172pounds, standard deviation σ=29pounds.

The chance that the localid="1650523973808" 20males chosen at random will have a total weight of more than localid="1650523978429" 3600labs is about localid="1650523981580" 1%. As a result, if the total weight of the localid="1650523985133" 20guys surpasses localid="1650523988819" 3500lbs, it will exceed the safety restrictions for water taxis because the chance will be lower. As a result, it's a safety issue.

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