03/20/13

Determine the area under a normal distribution graph with a mean of 55 and a standard deviation of 7?
a) to the right of x = 58 b) to the left of x = 24 Please show graphs if you can!!
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03/20/13

How to find a percentage from standard deviation and mean?
Tommy Wait’s times between pitches is normally distributed with a mean of 36 sec. and a standard deviation of 2.5 sec. What percentage of his times between his pitches are 30 and 34 seconds? Please... more
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03/20/13

How to find z-scores?
How can I find the z-scores of 0.7491, 0.0931, and 0.3452?
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03/19/13

Scores for an entry exam to a university...?
Scores for an entry exam to a university are normally distributed with a mean of 75 and a standard deviation of 6.5: a) If the top 5% are admitted with a full scholarship, what is the lowest score... more
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