Mathematics, 10.12.2020 19:40 narutoxptheninja
25% of students in 8th grade play an instrument. How many students play an instrument if there are 200 students in 8th grade.
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Mathematics, 22.06.2019 00:30
1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?
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25% of students in 8th grade play an instrument. How many students play an instrument if there are 2...
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