Assume that females have pulse rates that are normally distributed with a mean of 74. 0 beats per minute and a standarddeviation of 12.5 beats per minute. If 1 adult female is randomly selected, find the probability that her pulse rate is greaterthan 70 beats per minute.

preprekomW

preprekomW

Answered question

2021-08-18

Assume that females have pulse rates that are normally distributed with a mean of 74. 0 beats per minute and a standard deviation of 12.5 beats per minute.
If 1 adult female is randomly selected, find the probability that her pulse rate is greater than 70 beats per minute.

Answer & Explanation

brawnyN

brawnyN

Skilled2021-08-19Added 91 answers

Given: μ=74.0
σ=12.5
The standardized score is the value x decreased by the mean and then divided by the standard deviation. z=xμσ=7074.012.50.32
Determine the corresponding probability using the normal probability table in the appendix: P(X>70)=P(Z0.32)=1P(Z<0.32)=10.3745=0.6255

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