Question

In: Statistics and Probability

A common design requirement is that an environment must fit the range of people who fall...

A common design requirement is that an environment must fit the range of people who fall between the 5th percentile for women and the 95th percentile for men. In designing an assembly work​ table, the sitting knee height must be​ considered, which is the distance from the bottom of the feet to the top of the knee. Males have sitting knee heights that are normally distributed with a mean of 21.8 in. and a standard deviation of 1.3 in. Females have sitting knee heights that are normally distributed with a mean of 19.7 in. and a standard deviation of 1.2 in. Use this information to answer the following questions.

- What is the minimum table clearance required to satisfy the requirement of fitting 95% of men?

- Determine if the following statement is true or false. If there is clearance for 95% of males, there will certainly be clearance for all women in the bottom 5%.

- The author is writing this exercise at a table with a clearance of 23.1 in. above the floor. What percentage of men fit this table?

- What percentage of women fit this table?

Solutions

Expert Solution

What is the minimum table clearance required to satisfy the requirement of fitting 95% of men?

We need to find the 95th percentile of men knee height distribution.

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Determine if the following statement is true or false. If there is clearance for 95% of males, there will certainly be clearance for all women in the bottom 5%.

Yes true because mean knee height of female is less than mean knee height of male.

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For male:

Answer: 84.13%

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For female:

Answer: 99.77%

orchestra answered 2 years ago
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