In a game, you have a 1/21 probability of winning $135 and a 20/21 probability of losing $5. What is your expected winning?              

In a certain college, 33% of the physics majors belong to ethnic minorities. Find the probability that, from a random sample of 15 physics majors, exactly 4 belong to an ethnic minority.             

The instructor of an introductory mathematics class has recorded the number of students attending his class in the last 4 weeks. Below are his recordings. Construct a stem and leaf display for the given data. (Do your best at typing the stem and leaf on the answer box, however make sure it shows best on your work paper)

If a single card is drawn from a standard 52-card deck, in how many ways could it be: a. spade or a face card? b.  a nonface card

A sports shop sells tennis rackets in 3 different weights, 5 types of string, and 3 grip sizes. How many different rackets could they sell?

Find the following for the given frequency distribution. a) mode b)  median

In a certain lottery, 3 different numbers between 1 and 12 inclusive are drawn. These are the winning numbers. How many different selections are possible? Assume that the order in which the numbers are drawn is not important

Find the percent of the total area under the curve between z = -0.14 and z = 2.36.

Suppose one card is selected at random from an ordinary deck of 52 playing cards. Let        A = event a queen is selected     B = event a diamond is selected Determine P(B | A)

License plates are made using 2 letters followed by 4 digits. How many plates can be made if repetition of letters and digits is allowed?