Proving the Parallelogram Diagonal Theorem

Given the following sampling distribution of one mean with a sample size 49, from a normally distributed population, find the population standard deviation, o.79828588912497

You earn a 12% commission for every car you sell. how much is your commission if you sell a $23,000 car?

Of the 304 people who attended a school play, 5/8 were students. how many of the people who attended were students.