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A normal distribution has a mean of 100 and a standard deviation of 10. What is the Z score that corresponds with 78? Enter answer

A normal distribution has a mean of 100 and a standard deviation of 10. What is the Z score that corresponds with 78?

Enter answer rounded to nearest hundredth (two places after decimal) with "+" or "-" sign in front (no spaces between sign and number value of answer).Examples of correctly entered responses:

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