A sample of birth weights of 20 girls was taken. Below are the results (in g):

3037.7	4099.5	3478.6	3359.5	3324.3
3087.8	3284.4	3213.8	3502.5	3397.6
3218.8	2552.6	2557.7	4201.3	3207.8
3639.8	2914.2	3960.5	3379.1	3019.9

x= 3321.9 g

s= 432.86 g

Use a 10% significance level to test the claim that the standard deviation of birth weights of girls is less than the standard deviation of birth weights of boys, which is 530 g.

Round all answers to 3 decimal places if possible.

Compute the value of the test statistic: Round this answer to 2 decimal places.

Testing Procedure:

Provide the critical value(s) for the Rejection Region. For a one-tailed test, use DNE for the unneeded critical value. Round to 3 decimal places.

• Left CV =
• Right CV =