An elevator has a placard stating that the maximum capacity is 2520 lb-15 passengers. So, 15 adult male passengers can have a mean weight of up to 2520/15= 168 pounds. If the elevator is loaded with 15 adult male passengers, find the probability that it is overloaded because they have a mean weight greater than 168 Ib. (Assume that weights of males are normally distributed with a mean of 176 lb and a standard deviation of 27 lb.) Does this elevator appear to be safe? The probability the elevator is overloaded is (Round to four decimal places as needed.)

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The problem presented involves determining the probability that an elevator surpasses its weight capacity based on the distribution of passengers' weights.

**Problem Statement:**
An elevator has a placard indicating that the maximum capacity is 2520 lb for 15 passengers. Therefore, the mean allowable weight per passenger is 2520 ÷ 15 = 168 pounds. You are required to find the probability that the elevator is overloaded if it is carrying 15 adult male passengers with a mean weight exceeding 168 lb. Assume that the weights of the males are normally distributed with a mean (μ) of 176 lb and a standard deviation (σ) of 27 lb.

**Question:**
Does this elevator appear to be safe?

**Calculation:**
1. Calculate the mean and standard deviation of the sample (15 passengers).
2. Use the Z-score formula to find the probability of exceeding 168 lb.

The section includes an answer box where users can input their answers, a button to check the answer, clear options, and navigation controls (“Previous” and “Next”).

**Note:**
- Round the probability to four decimal places.
Transcribed Image Text:The problem presented involves determining the probability that an elevator surpasses its weight capacity based on the distribution of passengers' weights. **Problem Statement:** An elevator has a placard indicating that the maximum capacity is 2520 lb for 15 passengers. Therefore, the mean allowable weight per passenger is 2520 ÷ 15 = 168 pounds. You are required to find the probability that the elevator is overloaded if it is carrying 15 adult male passengers with a mean weight exceeding 168 lb. Assume that the weights of the males are normally distributed with a mean (μ) of 176 lb and a standard deviation (σ) of 27 lb. **Question:** Does this elevator appear to be safe? **Calculation:** 1. Calculate the mean and standard deviation of the sample (15 passengers). 2. Use the Z-score formula to find the probability of exceeding 168 lb. The section includes an answer box where users can input their answers, a button to check the answer, clear options, and navigation controls (“Previous” and “Next”). **Note:** - Round the probability to four decimal places.
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