Show:
Fundamentals
Two by two table
Random
Descriptive Statistics
Probability (all types)
10
Which of the following cannot be a probability? 0, 1, -2, .025, 3/5
-2
10

What's the probability that a randomly selected student is in the Goldstein advisory?

14/383 = 0.037

10

When is Pi Day celebrated?

March 14th (3/14)

10

What is the mode? 2, 3, 5, 4, 8, 5, 3, 5, 7

5

10

A quick quiz consists of a true/false question followed by a multiple choice question with 4 possible answers. What is the probability of randomly guessing 2 correct answers?

1/8

20
What is the probability of an impossible event?
0
20

What's the probability that a randomly selected student takes Stats and is NOT in the Goldstein Advisory?

32/383 = 0.084

20

What number is represented by the letter L in Roman Numerals?

50

20

What is the median? 7, 12, 13, 6, 9, 2, 4, 3, 9

7

20

Two 6-sided dice are rolled. What is the probability that the sum of the two numbers on the dice will be 3?

1/18 or 0.0556

30
What is the probability of an event that is certain to occur?
1
30

What's the probability that a randomly selected student takes Statistics?

40/383 = 0.104

30

What is the best selling album of all time?

Thriller (by Michael Jackson)

30

What is the standard deviation? 6, 6, 6, 6, 6, 6, 6

0

30

In the 108th Congress, the Senate consists of 51 Republicans, 48 Democrats and 1 Independent. What is the probability of selecting 3 Senators and that those 3 Senators are Republican?

17/132 or 0.129

40

On a multiple choice test with five possible answers for each question, what is the probability of answering the question correctly if you make a random guess?

1/5 or 0.2

40

If 2 students are randomly selected, what's the probability that they both take Stats?

(40/383)*(39/382) = 0.011
40

Name all of Santa's reindeer

Dasher, Dancer, Prancer, Vixen, Comet, Cupid, Donner, Blitzen, and Rudolph

40

What is the mean? 17, 20, 23, 14, 6

16.0

40

If a person is randomly selected, find the probability that his or her birthday is not in May. Ignore leap years.

334/365 or 0.915

50
In a couple had 3 children, what is the probability that among the three children, there are exactly 2 girls?
3/8
50

Are the events taking Stats and being in the Goldstein Advisory independent?  Prove using at least one test of independence.

No, they are dependent events.  

P(A) does not equal P(A|B)
P(Stats) = 0.104
P(Stats|Goldstein Adv) = 0.571

50

Who is the only tennis player to have won all four grand slams in the same year (and a singles gold at the Olympics)?

Steffi Graf

50

Which is a better score: a 72 on a test that has a mean of 80 and a standard deviation of 12 or a score of 19 on a test that has a mean of 20 and a standard deviation of 5?

A score of 19 

19 (z = -0.2) v 72 (z = -0.67)


50

There is 0.2 probability of guessing correctly on any given problem of a multiple choice test.  Given a m/c test with 10 questions, what is the probability that a person guesses correctly on AT LEAST one question?

0.893