1) Anormally distributed random variable has a mean of 80 and a standard deviation of 5. The z-score for x 88.75 is: 2) Suppose you know that the z-score for a particular x-value is -2.25. ,- 50 and o- 3 then x:
1) Anormally distributed random variable has a mean of 80 and a standard deviation of 5. The z-score for x 88.75 is: 2) Suppose you know that the z-score for a particular x-value is -2.25. ,- 50 and o- 3 then x:
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.2: Expected Value And Variance Of Continuous Random Variables
Problem 10E
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Transcribed Image Text:1) A normally distributed random variable has a mean of 80 and a standard deviation of 5.
The z-score for x = 88.75 is;
2) Suppose you know that the z-score for a particular x-value is -2.25. M
- 50 and o, - 3 then x:
3) Suppose you know that P(Zs z,) = 0.983, The z-score is;
4) A random variable is normally distributed with a mean of 40 and a standard deviation of
2.5. P(X s 43.75) is:
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