A sample of 25 one-year-old girls had a mean weight of 24.1 pounds with a standard deviation of 4.3 pounds. Assume that the population of weights is normally distributed. A pediatrician claim that the...

A sample of 25 one-year-old girls had a mean weight of 24.1 pounds with a standard deviation of 4.3 pounds.  Assume that the population of weights is normally distributed.  A pediatrician claim that the standard deviation of the weights of one-year-old girls is less than 5 pounds.  Answer the following questions to test the pediatrician's claim.  Use the level of significance=0.05

(a) Determine if the alternative hypothesis is "right", "left" or "two-tailed" test.

 (input as "right", "left" or "two-tailed")

(b) Find the test statistic.

(c) Find the Critical Value

(d ) State conclusion.  There is (input as "sufficient" or "insufficient") to  (input as "conclude" or "reject") that the standard deviation of the weights of one-year-old girls is less than 5 pounds.