The following data represent the pulse rates (beats per minute) of nine students

Question

The following data represent the pulse rates (beats per minute) of nine students enrolled in a statistics course. Treat the nine students as a population. Complete parts (a) to (c) (a) Determine the population mean pulse The population mean pulse is approximately beats per minute. (Type an integer or decimal rounded to the nearest tenth as needed.) (b) Determine the sample mean pulse of the following two simple random samples of size 3 Sample 1: Crystal, Clarice, Kevinh Student Perpectual Bempah Megan Brooks Jeff Honeycutt Clarice Jefferson Crystal Kurtenbach Janette Lantka Kevin McCarthy Tammy Ohm Kathy Wojdya Pulse 86 83 90 86 89 83 76 69 72 Sample 2: (Janette, Crystal, Meganh The mean pulse of sample 1 is approximatelybeats per minute (Round to the nearest tenth as needed.) The mean pulse of sample 2, is approximatelybeats per minute. (Round to the nearest tenth as needed.) (c) Determine if the means of samples 1 and 2 overestimate, underestimate, or are equal to the population mean The mean pulse rate of sample 1 Vthe population mean. The mean pulse rate of sample 2 | the population mean.

Explanation / Answer

a) Population mean value = (86 + 83 + 90 + 86 + 89 + 83 + 76 + 69 + 72)/9 = 81.6

b) Mean of sample1 = (89 + 86 + 76)/3 = 83.7

Mean of sample 2 = (83 + 89 + 83)/3 = 85

c) Overestimates; Overestimates

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