Please answer question 15

Quiz 7 X Est. Length: 2:00:00 Douglas Cobb: Attempt 1 Question 15 (7 points) Explain the difference between parts A and C. In both parts we are asked whether or not there is evidence that the population mean was over $300. In part A: x(bar) = $315.40; 5 = $43.2; Sample size = 25 In part C: x(bar) = $315.40; 5 = $75; Sample size = 25 O The larger mean adds uncertainty in the sample. The sample may have had some outliers. O The smaller mean adds uncertainty in the sample. The sample may have had some outliers. O The larger standard deviation adds uncertainty in the sample. The sample may have had some outliers. O The smaller standard deviation adds uncertainty in the sample. The sample may have had some outliers