10. Sample data, sample size, the confidence level, and the confidence interval You are a member of a team studying the automobile industry. One phase of your investigation is to develop an interval estimate of the average distance that automobile-parts suppliers are located from Detroit. The population standard deviation σ is unknown. You and your teammate work with the same sample. Your teammate chooses a smaller confidence level than yours. Think about plotting both your interval estimate and your teammate’s interval estimate on a number line and then comparing where they sit and their widths. Being as specific as you can, which of the following statements best describes where the intervals sit on the number line? Your teammate’s interval is centered at a lower value than yours.   They are centered at the same value.   Your teammate’s interval is centered at a higher value than yours.   They are centered at different values.     Being as specific as you can, which of the following statements best describes the widths of the two intervals? They are the same width.   Your teammate’s interval is narrower than yours.   Your teammate’s interval is wider than yours.   They are not the same width.

The first statistics exam had a mean of 73 and a standard deviation of 15 ​points; the second had a mean of 83 and a standard deviation of 5 points. Anna scored a 82 on both tests. Megan scored 92 on the first exam and 7272 on the second. They both totaled 164 points on the two​ exams, but AnnaAnna claims that her total is better. Explain.       Question content area bottom Part 1 The total of Anna's ​z-scores is enter your response here​, which is greater than Megan's total of enter your response here. ​(Round to one decimal place as​ needed.)

You are given n = 5 measurements 2, 1, 1, 3, 5. Find the sample standard deviation

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