Mathematics, 03.12.2021 20:10, donnafranks2003
15. The number of students in the eighth grade class is three less than twice the number
of students in the sixth grade. Ariana defined variables for the situation and used
them to express the number of students in the eighth grade in terms of the number
of students in the sixth grade. Her work is shown. What was Ariana's error?
Answers: 3
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?
Answers: 2
15. The number of students in the eighth grade class is three less than twice the number
of studen...
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