NO FILES OR LINKS 13 Indicate whether each expression in the table is equivalent to a – 1, is equivalent to 2 – 5 or not equivalent to 1/2 - 1 or 2 - 1
Select all appropriate cells in the table.
Equivalent to 5* - 1 Equivalent to a
Not Equivalent to
1 or 2
11 / 를
le
X
(2x + 1) -

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?