For an example and calculator help with this problem, refer to the Calculator Instructions tab of Module 3 page called N

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For An Example And Calculator Help With This Problem Refer To The Calculator Instructions Tab Of Module 3 Page Called N 1 (157.31 KiB) Viewed 118 times

For an example and calculator help with this problem, refer to the Calculator Instructions tab of Module 3 page called Notes - Measures of Central Tendency and Dispersion. Use the data set below (ages at inauguration of the last 20 US presidents) for this problem. Age at Inauguration 42 51 56 61 54 64 62 43 55 55 51 69 60 54 47 70 55 52 51 46 (blank) (a) Use your calculator to find the population mean, population standard deviation, and population variance. Round your answers to one decimal place. 54.9 U = ,0 = ,62 = x- (b) Find the z-score for the president who was 70 years old at the time of inauguration. z = Round to two decimal places. Is this age unusual (more than 2 standard deviations from the mean)? (c) Find the Z-score for the president who was 42 years old at the time of inauguration. Round to two decimal places. Is this age unusual (more than 2 standard deviations from the mean)?