SOLUTION: We are using the standard normal random variable is between 0 and Z table
I need to find the probability for
mean of 22 feet height and standard deviation is 4 feet
A. what
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Question 516685: We are using the standard normal random variable is between 0 and Z table
I need to find the probability for
mean of 22 feet height and standard deviation is 4 feet
A. what is the probability that the height is greater than 17
B. height is less than 13 feet
C. the height is between 25 and 31 feet
I tried x-u/O to get z score and looked up in the table and all my answers have been wrong please help me understand how to find probability
Thank You
Beverly
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
mean of 22 feet height and standard deviation is 4 feet
A. what is the probability that the height is greater than 17
z(17) = (17-22)/4 = -5/4
P(x > 17) = P(z > -5/4) = 0.8944
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B. height is less than 13 feet
z(13) = (13-22)/4 = -9/4
P(x < 13) = P(z < -9/4) = 0.122
-------------------------------
C. the height is between 25 and 31 feet
---
Find the z value of 25 and of 31.
The find the probability that z is between those two values.
Ans: 0.2144
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Cheers,
Stan H.
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