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Suppose X has a normal distribution with mean 25 and standard deviation five. 1. Between what values do 68% of the values of x lie?

Suppose X has a normal distribution with mean 25 and standard deviation five.

1. Between what values do 68% of the values of x lie? 68% is ______ standard deviation away from the mean So z-scores are _____________ and _____________________

2. Between what values do 99.7% of the values of x lie?

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