You have 6 reindeer jebediah, bloopin, balthazar, ezekiel, Prancer, and Lancer, and you want 4 fly your sleigh. You always have your reindeer fly in a single-file line. How many ways can you arrange your reindeer

Which of the following expressions are equivalent ?

You have 6 dollars +12 pennies +to quarters + 4 dimes=2 nickels how much do you have

An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.