The National Gymnastics Association wants to determine whether the weights of their registered gymnasts are in-line with

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The National Gymnastics Association Wants To Determine Whether The Weights Of Their Registered Gymnasts Are In Line With 1 (30.98 KiB) Viewed 31 times

The National Gymnastics Association wants to determine whether the weights of their registered gymnasts are in-line with international safety requirements. On average a gymnast should weigh about 140lbs with a population standard deviation of 12lbs. Some believe that the variability has changed. To determine whether the variability has changed, a sample of 32 gymnasts were weighed and found to have a standard deviation of 17.7lbs. Conduct the necessary hypothesis test to determine if there has been a change in the variability of the gymnasts' weight, assuming the p-value for this test is 0.531 and the population from which thus sample was taken is normally distributed. Based on the information above, what are the null and alternative hypotheses? Select one OaHO: 0=12& H1:0 > 12 b. H0 a 12 & H1:0#12 CHỌO 12 & H1: a =177 d. H0: a = 17.7 & H1: a> 177)