In designing a work desk, it is found that males have sitting knee heights with a mean of 20.3 in. and a standard deviation of 2.3 in. (based on data from the Department of Transportation). Use the range rule of thumb to identify (a) the values that are significantly low, (b) the values that are significantly high, and (c) the values that are neither significantly low nor significantly high.

a. What heights are significantly low? Select the correct answer below and fill in the answer boxes) to complete your choice.

(Type integers or decimals. Do not round.)

• A.
  Heights that are greater than
  B.
  Heights that are less than
• C. Heights that are greater than in. and less than

b. What heights are significantly high? Select the correct answer below and fill in the answer boxes) to complete your choice.

(Type integers or decimals. Do not round.)

• A.
Heights that are less than

O B. Heights that are greater than in. and less than

• C. Heights that are greater than

c. What heights are neither significantly low nor significantly high? Select the correct answer below and fill in the answer boxes) to complete your choice.

(Type integers or decimals. Do not round.)

• A. Heights that are greater than in. and less than
• B. Heights that are less than
• C. Heights that are greater than in.