Statistics and Probability

1.

Multiple Choice

30 sec

1 pt

It is a numerical quantity that is assigned to the outcome of an experiment.

Statistics

Probability

Random Variable

Distribution

2.

Multiple Choice

30 sec

1 pt

It is the set of all possible outcomes in an experiment.

Random Variable

Sample Space

Mean

Data

3.

Multiple Choice

30 sec

1 pt

Two coins are tossed in an experiment. Which of the following list is the sample space?

S= {HH, HT, TH, TT}

S= {HH, TT}

S= { HT, TH, TT}

S= {HH, HT, TT}

4.

Multiple Choice

30 sec

1 pt

Supposed two coins are tossed consecutively and we are interested in the number of heads that will come out. Determine the values of the random variable H (number of heads).

0,2,3,4

0,1,2,3

0,1,2

0,1,2,3,4

5.

Fill in the Blank

1 min

1 pt

Nico label an x- axis with points earned and the corresponding y - axis with the number of players. He plot one against the other and he obtain a bar graph called a what?

6.

Fill in the Blank

1 min

1 pt

If you had no idea what the answer to this four option multiple choice was and took a wild guess, what is the probability that you are correct?

7.

Multiple Select

45 sec

1 pt

Which of the following are the properties of a Normal Probability Distribution.

The distribution curve is bell - shaped.

The curve is symmetric about its center, the mean.

The mean, the median, and the mode coincide at the center.

The area under the curve is 1 or 100%

The tails of the curve is asymptotic to the base line.

8.

Multiple Choice

30 sec

1 pt

TRUE or FALSE: The standard normal distribution of a random variable is a normal distribution with mean =0 and standard deviation =1.

TRUE

FALSE

9.

Multiple Choice

30 sec

1 pt

TRUE or FALSE: The area between 0 and a positive value z is the same as the area between 0 and -z.

TRUE

FALSE

10.

Multiple Choice

30 sec

1 pt

TRUE or FALSE: The area that corresponds to z = 2.58 is the same as the area that corresponds to z = -2.58, which is A = 0.4951

TRUE

FALSE

11.

Fill in the Blank

1 min

1 pt

Find the area that corresponds to z = -1.15

12.

Fill in the Blank

1 min

1 pt

What is the probability that the value of a standard normal random variable z lies between 0 and 1.28?

13.

Fill in the Blank

1 min

1 pt

It is the mathematical function that gives the probabilities of occurrence of different possible outcomes for an experiment.

14.

Fill in the Blank

1 min

1 pt

It is a variable whose value is determined by the outcome of a random experiment.

15.

Fill in the Blank

1 min

1 pt

It is a random variable whose set of assumed values that is countable.

16.

Fill in the Blank

1 min

1 pt

A random variable whose set of assumed values that is uncountable, usually arises from measurement.

17.

Fill in the Blank

1 min

1 pt

It is a number which describes the spread of the distribution.

18.

Fill in the Blank

1 min

1 pt

The following table represents the probability distribution X, the employment status of adults in a city.

What is the probability that the adults isn't retired?

19.

Fill in the Blank

1 min

1 pt

If you select one adult at a random from this community, what is the probability that the adults is employed as part -time?

20.

Fill in the Blank

1 min

1 pt

If you select one adult at a random from this community, what is the probability that the adults is working either part - time or full - time?

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