SOLUTION: Please help... 1. A population has a standard deviation of 2 and a z-score = -1.00. In this population, what is the mean? 2. What is the probability of randomly selecting a z

Question 866841: Please help...
1. A population has a standard deviation of 2 and a z-score = -1.00. In this population, what is the mean?
2. What is the probability of randomly selecting a z-score greater than z= -.30 from a normal distribution?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
1. A population has a standard deviation of 2 and a z-score = -1.00. In this population, what is the mean?
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If 2 has a z-score of -1, 2 is one standard deviation below
the mean.
The mean would have to be 2+2 = 4
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2. What is the probability of randomly selecting a z-score greater than z= -.30 from a normal distribution?
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P(z > -0.3) = normalcdf(-0.3,100) = 0.6179
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Cheers,
Stan H.

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