Question

Find the requested value. A researcher wishes to estimate the mean resting heart rate for long-distance...

Find the requested value.

A researcher wishes to estimate the mean resting heart rate for long-distance runners. A random sample of  runners yields the following heart rates, in beats per minute.



Use the data to obtain a point estimate of the mean resting heart rate for all long distance runners.

69.6 beats per minute

66.2 beats per minute

64.6 beats per minute

67.8 beats per minute

Homework Answers

Answer #1

We want to find a point estimate of the mean resting heart rate for all long-distance runners.

Let x = Resting heart rate for all long-distance runners beats per minute

x = 69.6,66.2,64.6,67.8

n= 4

We know that the point estimate of population mean(u) is sample mean(xbar)

sample mean = ?

sum of x = 69.6 + 66.2 + 64.6 + 67.8 = 268.2

sample mean = sum of x / n

= 286.2 / 4

= 67.05

Sample mean = 67.05

Answer:- 67.05 is the point estimate of the mean resting heart rate for all long-distance runners.

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