The following data represent the pulse rates (beats per minute) of nine students
ID: 3200173 • Letter: T
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.
Student
Pulse
Perpectual Bempah
77
Megan Brooks
71
Jeff Honeycutt
87
Clarice Jefferson
68
Crystal Kurtenbach
61
Janette Lantka
66
Kevin McCarthy
67
Tammy Ohm
83
Kathy Wojdya
90
The population mean pulse is approximately 74.4 beats per minute.
(b) Determine the sample mean pulse of the following two simple random samples of size 3.
Sample 1: {Kathy, Janette, Tammy}
Sample 2: {Crystal, Kathy, Kevin}
The mean pulse of sample 1 is approximately __________ beats per minute.
(Round to the nearest tenth as needed.)
Student
Pulse
Perpectual Bempah
77
Megan Brooks
71
Jeff Honeycutt
87
Clarice Jefferson
68
Crystal Kurtenbach
61
Janette Lantka
66
Kevin McCarthy
67
Tammy Ohm
83
Kathy Wojdya
90
Explanation / Answer
Sample 1: {Kathy, Janette, Tammy}
sample mean 1=sum/total
=90+66+83/3
=239/3
=79.7 beats per min
The mean pulse of sample 1 is approximately 79.7 beats per min.
sample 2 mean=sum/total=
=61+90+67/3
=218/3
=72.7
The mean pulse of sample 1 is approximately 72.7 beats per min.
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