nancyhamud42 nancyhamud42

05-10-2021
Mathematics

contestada

The mean is 100 and the standard deviation is 15. What percent of the population falls between:
1) 85 and 115
2) 70 and 130

CORRECT ANSWER ONLY PLEASE EXPLAIN

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icuberlsa icuberlsa

05-10-2021

Answer: 1. 68%; 2.95%

Step-by-step explanation: Search up standard deviation distribution. If it is "normally distribitued," the percentage of data in each standard deviation interval increases by a certain percentage, for the first one one standard deviation from the mean is 68%, and two is 95%. This is always true if the data is "normally distributed."

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