A sample of birth weights of 36 girls was taken Below are the results in...
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A sample of birth weights of 36 girls was taken Below are the results in g 2681 8 3605 5 3955 6 2591 7 2638 6 3881 9 3149 9 2850 4 2792 1 3757 3 3339 2768 4 2812 8 3655 6 3433 9 3117 5 3341 8 3921 4 4002 4 3756 5 3424 5 3818 3 3726 5 3289 3456 5 2910 3683 5 3560 9 3388 5 3082 1 2828 3181 8 3115 6 3344 4 3064 2 3836 Note The average and the standard deviation of the data are respectively 3326 8 g and 419 7 g Use a 1 significance level to test the claim that the standard deviation of birthweights of girls is different from the standard deviation of birthweights of boys which is 480 g Procedure Select an answer O Assumptions select everything that applies O Population standard deviation is unknown The number of positive and negative responses are both greater than 10 O Population standard deviation is known Sample size is greater than 30 O Simple random sample O Normal population
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