26.25 26.00 39. Here is a sample of ACT scores (average of the Math, English, Social Science, and Natural Science scores

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26 25 26 00 39 Here Is A Sample Of Act Scores Average Of The Math English Social Science And Natural Science Scores 1 (29.08 KiB) Viewed 83 times

26.25 26.00 39. Here is a sample of ACT scores (average of the Math, English, Social Science, and Natural Science scores) for students taking college freshman calculus: 24.00 28.00 27.75 27.00 24.25 23.50 24.00 25.00 30.00 23.25 26.25 21.50 28.00 24.50 22.50 28.25 21.25 19.75 (a) Using an appropriate graph, see if it is plausible that the observations were selected from a normal distribution (b) Calculate a 95% confidence interval for the population mean. (c) The university ACT average for entering freshmen that year was about 21. Are the calculus students better than average, as measured by the ACT?