Which inequalities are equivalent to n+15 <22? Select three options. Dn+15-15 <22-15
Dn+15 <22-15
Dn+15-22 <22-22
On+15+6 <22+6
On+15- 22 <22

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?