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).
student pulse
perpetual bempah 64
megan brooks 85
jeff honeycutt 75
clarice jefferson 90
crystal kurtenbach 73
janette lantka 72
kevin mccarthy 84
tammy ohm 82
kathy wojdya 70
(a) determine the population mean pulse.
the population mean pulse is approximately 77.2 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: {megan, jeff, perpetual}
sample 2: {janette, megan, tammy}
the mean pulse of sample 1 is approximately \\(\square\\) beats per minute.
(round to the nearest tenth as needed.)

Explanation:

Step1: Identify pulse rates of Sample 1

Megan: 85, Jeff: 75, Perpetual: 64

Step2: Sum the pulse rates

$85 + 75 + 64 = 224$

Step3: Calculate the mean (sum divided by sample size)

$\frac{224}{3} \approx 74.7$ (rounded to nearest tenth)

Answer:

74.7