1) A study in Pediatric Emergency Care compared the injury severity between younger and older children. One measure reported was the Injury Severity Score (ISS). The standard deviation of ISS scores for 32 children 8 years or younger was 22.7, and the standard deviation for 39 children older than 8 years was 7.6. Assume that ISS scores are normally distributed for both age groups. At the 0.01 level of significance, is there sufficient reason to conclude that the standard deviation of ISS scores for younger children is larger than the standard deviation of ISS scores for older children?

Find F. (Give your answer correct to two decimal places.) Find the p-value. (Give your answer correct to four decimal places.)

2)Calculate F given the following. (Give your answer correct to two decimal places.)s₁ = 4.3 and s₂ = 2.0

3)Find the critical value for the hypothesis test, given the following. (Give your answer correct to two decimal places.)H_a: ₁ > ₂, with n₁ = 10, n₂ = 13, and = 0.01

4)Consider the following. (Give your answers correct to two decimal places.)

Find F (3, 30, 0.01). ______________________ Find F (30, 3, 0.01). ________________