SOLUTION: the test scores in Mrs. kaste's Math b class are normally distributed with a mean of 85 and a standard deviation of 5. between what two scores would 95.4 percent of the scores fall

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Question 83665: the test scores in Mrs. kaste's Math b class are normally distributed with a mean of 85 and a standard deviation of 5. between what two scores would 95.4 percent of the scores fall?
75-100
80-90
75-95
85-90
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
the test scores in Mrs. kaste's Math b class are normally distributed with a mean of 85 and a standard deviation of 5. between what two scores would 95.4 percent of the scores fall?
75-100
80-90
75-95
85-90
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It appears you are expected to find these answers based on the
standard normal distribution which says "approximately 95% of a
normallly distributed population will lie within 2 standard
deviations of the mean".
If that is what you are doing your anser is:
2 standard deviations to the left of the mean is a score of 75;
2 standard deviations to the right of the mean is a score of 95.
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Cheers,
Stan H.