Confidence Intervals
November 23rd, 2021
Please see the screenshot and calculate a confidence interval for the price of the IPADS ONLY based on the given sample.For iPads:1) What is the Margin of Error?2) What is the sampling Error?3) What are the confidence intervals?Compare the two intervals, what do you observe?4) When the Confidence level increases, what happens to the interval?5) What happens to the Margin of Error?6) Now, double the # of items available and assume that the mean and the stdev of the price stays the same. Calculate the Confidence intervals again, what do you observe?
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