b Take Sample Point estimate of the population variance 0 Sample size 0 Left critical value 0 Right critical value 0 Number of

Question

b Take Sample Point estimate of the population variance 0 Sample size 0 Left critical value 0 Right critical value 0 Number of plastic medals Compute 28 Sample mean To find the confidence interval for the population standard deviation first find the confidence interval for the population variance Enter the values of the point estimate of the population variance the sample size the left critical value and the right critical value you need for your 99 confidence interval for the population variance Choose the correct critical values from the table of critical values provided When you are done select Compute 99 confidence interval for the population variance 36 79 99 confidence interval for the population standard deviation X Sample standard 2 deviation Left 0 37 Critical values Right X0 995 11 808 0 005 49 645 X0 97514 573 0 025 43 195 2 Sample variance 2 X0 950 16 151 0 050 40 113 0 1369 Based on your sample graph the 99 confidence interval for the population standard deviation of the weights of all the plastic medals Enter the values for the lower and upper limits on the graph to show your confidence interval Round the values to two decimal places For the point enter the claim 0 11 made by the manufacturer on your graph

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