SOLUTION: A set of 50 data values has a mean of 34 and a variance of 25. I. Find the standard score (z) for a data value = 23. II. Find the probability of a data value < 23.

Algebra ->  Probability-and-statistics -> SOLUTION: A set of 50 data values has a mean of 34 and a variance of 25. I. Find the standard score (z) for a data value = 23. II. Find the probability of a data value < 23.       Log On


   

Question 644650: A set of 50 data values has a mean of 34 and a variance of 25.
I. Find the standard score (z) for a data value = 23.
II. Find the probability of a data value < 23.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
A set of 50 data values has a mean of 34 and a variance of 25.
I. Find the standard score (z) for a data value = 23.
z(23) = (23-34)/5 = -11/5
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II. Find the probability of a data value < 23.
P(x < 23) = P(z < -11/5) = normalcdf(-100,-11/5) = 0.0139
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Cheers,
Stan H.
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