Help Find the volume of this cone.
Use 3 for IT.
Trzh
3
190cm V ~
[?]cm3
Hint: The radius
(1) is 1/2 of the
diameter.
10 cm

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?