Babies: 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 claims that the standard deviation of the weights of one-year-old girls is greater than 5 pounds. Do the data provide convincing evidence that the pediatrician's claim is true? Use the a=0.01 level of significance. Part 1 of 5 State the appropriate null and alternate hypotheses. V 5 %3D H1:0 > 5 This hypothesis test is a right-tailed V test. Part 2 of 5 Find the critical value. Round the answer to three decimal places. For a= 0.01 , the critical value is 42.980

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Babies: 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
claims that the standard deviation of the weights of one-year-old girls is greater than 5 pounds. Do
the data provide convincing evidence that the pediatrician's claim is true? Use the a= 0.01 level of
significance.
Part 1 of 5
State the appropriate null and alternate hypotheses.
Ho:o =
H1:0 >
This hypothesis test is a right-tailed
v test.
Part 2 of 5
Find the critical value. Round the answer to three decimal places.
For a= 0.01 , the critical value is 42.980
Part: 2/5
Part 3 of 5
Compute the test statistic. Round the answer to three decimal places.
Transcribed Image Text:Babies: 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 claims that the standard deviation of the weights of one-year-old girls is greater than 5 pounds. Do the data provide convincing evidence that the pediatrician's claim is true? Use the a= 0.01 level of significance. Part 1 of 5 State the appropriate null and alternate hypotheses. Ho:o = H1:0 > This hypothesis test is a right-tailed v test. Part 2 of 5 Find the critical value. Round the answer to three decimal places. For a= 0.01 , the critical value is 42.980 Part: 2/5 Part 3 of 5 Compute the test statistic. Round the answer to three decimal places.
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