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 less than 6 pounds. Do the data provide convincing evidence that the pediatrician's claim is true? Use the a=0.01 level of significance. Part: 0 / 5 Part 1 of 5 State the appropriate null and alternate hypotheses. Ho: (Choose one) H : (Choose one) This hypothesis test is a (Choose one) V test