Engineers want to design seats in commercial aircraft so that they are wide enough to fit 95% of all males. (Accommodating 100% of males would require very wide seats that would be much too expensive.) Men have hip breadths that are normally distributed with a mean of 14.3 in. and a standard deviation of 0.9 in. Find Pos That is, find the hip breadth for men that separates the smallest 95% from the largest 5%. The hip breadth for men that separates the smallest 95% from the largest 5% is Pg5 = in. (Round to one decimal place as needed.)

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**Designing Aircraft Seats for Optimal Fit**

**Objective:** 
Engineers aim to design seats in commercial aircraft to accommodate 95% of all males, ensuring seats provide comfort without being overly expensive.

**Background Data:**
- Male hip breadths are normally distributed.
- Mean hip breadth: 14.3 inches.
- Standard deviation: 0.9 inches.

**Task:**
Determine the hip breadth (P₉₅) that separates the smallest 95% of males from the largest 5%.

**Solution Approach:**
1. Use the properties of the normal distribution.
2. Find the z-score corresponding to the 95th percentile.
3. Calculate P₉₅ using the formula:
   \[
   P₉₅ = \text{mean} + (z \times \text{standard deviation})
   \]

**Answer:**
The hip breadth for men that separates the smallest 95% from the largest 5% is \( P_{95} = \) ___ inches. (Round to one decimal place as needed.)

This calculation helps balance the need for comfort against cost efficiency in aircraft seat design.
Transcribed Image Text:**Designing Aircraft Seats for Optimal Fit** **Objective:** Engineers aim to design seats in commercial aircraft to accommodate 95% of all males, ensuring seats provide comfort without being overly expensive. **Background Data:** - Male hip breadths are normally distributed. - Mean hip breadth: 14.3 inches. - Standard deviation: 0.9 inches. **Task:** Determine the hip breadth (P₉₅) that separates the smallest 95% of males from the largest 5%. **Solution Approach:** 1. Use the properties of the normal distribution. 2. Find the z-score corresponding to the 95th percentile. 3. Calculate P₉₅ using the formula: \[ P₉₅ = \text{mean} + (z \times \text{standard deviation}) \] **Answer:** The hip breadth for men that separates the smallest 95% from the largest 5% is \( P_{95} = \) ___ inches. (Round to one decimal place as needed.) This calculation helps balance the need for comfort against cost efficiency in aircraft seat design.
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