The customer service department of H&R Block received a total of 235 telephone requests for a tip-sheet on personal tax or corporate tax. The following table summarizes callers' primary area of interest, and how they first heard about the tip-sheet. 
Suppose that a caller is selected at random. Find the probability that the caller selected heard about the report from the radio, assuming they are interested in personal tax.
Definitions:
Covariance
A measure used in statistics and finance to assess how changes in one variable are associated with changes in another variable.
Canadian Stock Market
A financial market in Canada where securities, equities, bonds, and other financial instruments are traded.
Risk-free Rate
The expected return from an investment that carries no risk of losing money, commonly indicated by the interest rate on treasury securities.
Forward Rate
An agreed-upon interest rate for a loan or investment to be initiated in the future, used in forward contracts and financial planning.
Q15: Select the statement that correctly identifies a
Q19: The following class intervals for a frequency
Q26: (i. If the mean of a frequency
Q28: Ten experts rated a newly developed chocolate
Q42: Carlson Jewelers permits the return of their
Q59: i. A continuity correction compensates for estimating
Q73: i. A random variable is assigned numerical
Q86: Monthly commissions of first-year insurance brokers are
Q120: For which measure of central tendency will
Q126: A sample of 500 evening students revealed