Question 313733: I was hoping I could get verification that I figured this problem out right for my homework if anybody can help I would appreciate it.
Pulse rates of adult men are approximately normal with a mean of 70 and a standard deviation of 8. Using Standard Normal Table, which choice correctly describes how to find the proportion of men that have a pulse rate greater than 78?
1.Find the area to the right of z =1 under a standard normal curve.
2.Find the area between z = -1 and z = 1 under a standard normal curve.
3.Find the area to the right of z = -1 under a standard normal curve.
4.Find the area to the left of z = 1 under a standard normal curve.
I did this: 78-70/8=1
so I think number 1 is the appropriate answer. Fingers crossed, I hope I am right. If I am not can you please take the time to explain it to me. I would greatly appreciate it.
TY,
Kristal
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Pulse rates of adult men are approximately normal with a mean of 70 and a standard deviation of 8. Using Standard Normal Table, which choice correctly describes how to find the proportion of men that have a pulse rate greater than 78?
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Comment: 78 is one standard deviation to the right of the mean so its
z-score is z=1.
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1.Find the area to the right of z =1 under a standard normal curve.
2.Find the area between z = -1 and z = 1 under a standard normal curve.
3.Find the area to the right of z = -1 under a standard normal curve.
4.Find the area to the left of z = 1 under a standard normal curve.
I did this: (78-70)/8=1
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You did well.
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so I think number 1 is the appropriate answer.
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Correct
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Cheers,
Stan H.
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