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.
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
(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.
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