Question

Supposet hat the sitting back-to-knee length for a group of adults has normal distribution with a mean of 24 inches and a standard deviation of 1.1 inch. These data are often used in the design of different seats, including aircraft seats, train seats, theater seats and classroom seats. Instead of using 0.05 for identifying significant values, use the criteria that a value x is significantly high if P (x or greater) < 0.01 and a value is significantly low if P(x or less) <0.01. Find the back to knee lengths separating. Using this criteria is a length of 26.2 significantly high?

Answer 1

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