Consider the discrete probability distribution in the following table

X 4 5 6 7

P (X).4.1.2.3

Find P (X=4), P (X<4), and P (X=4 or X=5).

There are 45 questions on your math exam. You answered 8/ 10 of them correctly. How many questions did you answer correctly?

What are the first four terms of the sequence given by the formula below? an = - 2n + 4

If h (x) = x - 7 and g (x) = x2, which expression is equivalent to (gºn (5) ?

What is the variance of this data to the nearest one hundredth? 10 12, 8, 2

Mr. jingles is making sack lunches for all of the elves at the North Pole. Each elf eats One fourth of a peanut butter sandwich. If there are 88 elves, how many sandwiches should Mr. jingles make.

There are 7 red cards and 13 blue cards in a deck of cards. If Chayse randomly selects a card from the deck, what is the probability that it is a red card?

To get to work, you drive for 20 minutes at 30mph, and walk 10 more minutes at 3 mph. What was your average speed?

Natalies group brought in pizzas but is buying the drinks at the concession stand. How many medium sodas at the cost of $1.25 can her group with a $20?

Roll the number cube to find the observed frequency. Roll the number cube 20 times to represent 20 purchases. What is the experimental probability of receiving a 50% coupon? Write the probability as a decimal.

The number of customers that enter a store during one day in an example of: -a continuous random variable -a discrete random variable -either a continuous or a discrete random variable, depending on the gender of the customers