The mean 1Q sCorm of acuits is 100, with a stndard ceviation of 15. Use the ormpirical rle to find the percentage of aduts with scores between 70 and 130. (Assu the data set has a bell-shapod distribution) O A. 68% OB 95% O C. 100% O D. 99.7%

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A: Given problem Given that   Mean = 80 Standard deviation = 8  P( 76 ≤ x ≤ 81 ) = ?

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Q: Suppose x has a distribution with ? = 76 and ? = 8. Find P(72 ≤ x ≤ 77). (Round your answer to four…

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