The scores on a college entrance exam have an approximate normal distribution with mean, =54 points and
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The scores on a college entrance exam have an approximate normal distribution with mean, =54 points and a standard deviation, =13 points.
Enter the exact answers in increasing order.
(a) About68% of the y values lie between______and_____ .The z-scores are___and____, respectively.
(b)About 95% of the y values lie between____and____.The z-scores are___and_____, respectively.
(c) About 99.7% of the y values lie between____and___.The z-scores are___and___ respectively.
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