Q1. A maker of frozen meals claims that an average caloric content of its meals is 800 and the standard deviation is 25. A researcher tested 12 meals and found that an average number of calories were 873 with a variance of 22. Is there enough evidence to reject the claim? Suppose equal sample size for the control and experimental groups.

Q2. Describe why people confined to wheelchairs as of paralyzed lower limbs have thin, weak bones in their thighs and legs.