Mathematics, 25.07.2019 04:00, mandoux

What is the area of a triangle with a base of 7cm and a height of 4 cm?

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Mathematics, 21.06.2019 17:30, NathalyN

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Mathematics, 22.06.2019 00:30, sanfordl

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?