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. (a) Compute the population standard deviation. sigma = 4.9 beats/minute (Type an integer or decimal rounded to one decimal places as needed.) (b) Determine the sample standard deviation of the following two simple random samples of size 3 Sample 1 (Kathy, Crystal, Megan} Sample 2 [Tammy, Megan, Jeff] The sample standard deviation, s of sample 1. [Kathy, Crystal Megan], is bots per minutes (Type an integer or decimal rounded to one decimal place as needed.)

Explanation / Answer

Sample standard deviation of sample 1

= Standard deviation of 75, 71 and 66

= 4.5

Sample standard deviation of sample 2

= Standard deviation of 67, 66 and 68

= 1

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