Easy
What is the probability of getting ahead in flipping a fair coin?
1/2
A two dice are rolled. What is the probability of getting a sum of 7
1/6
A bag contains five red and three blue balls. What is the probability of drawing two red balls without replacement
5/14
A die is rolled once. What is the probability of getting a 4
1/6
Find the variance of 1,3,5
IF THE MEAN=3
8/3
Find the standard deviation of: 2, 4, 6
8/3
Find the mean of: 2,4,6,8
5
A card is drawn from a standard deck. What is the probability of drawing a heart?
1/4
If two coins are flipped, what is the probability of getting at least one head
3/4
How many outcomes are possible when flipping 2 coins
4
Find the mode of: 2,4,4,5,6
4
In how many ways can 4 students be arranged in a line
24
What is the median of: 3,7,9?
7
A box contain 4 red balls and 6 blue balls. One ball is drawn at random. What is the probability that the ball draw is read
2/5
A test has mean 70 and SD 10. If a student score 90, what is the Z-score