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 |
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.
Get Answers For Free
Most questions answered within 1 hours.