Question 1

2pts

Which of the following would be a discrete variable?

Group of answer choices

Number of inches reflecting someone's height

Number of cans of dog food eaten

Count of students in class

Amount of soup in a can

Question 2

2pts

A main characteristic of a discrete probability distribution is that ___________.

Group of answer choices

each probability is between 1 and 2

each probability is between -1 and +1

the probabilities add to 1

the probabilities add to 0

Question 3

2pts

If Sam can purchase up to 3 ice cream cones and the probabilities that he/she purchases 0, 1, 2, or 3, are 0.20, 0.45, 0.35, and 0.05 respectively, is this a valid probability distribution?

Group of answer choices

Yes, as they are all positive

Yes, as all are between 0 and 1

No, as they do not add to 1

No, as no probability is between 0 and 1

Question 4

2pts

If Alex can purchase up to 2 ice cream cones and the probabilities that he/she purchases 0, 1, or 2 are 0.10, 0.50, and 0.40, what is the mean number of cones that he/she will purchase?

Group of answer choices

1.5

1.0

0.7

1.3

Question 5

2pts

When conducting a binomial experiment, how many times will the experiment be repeated?

Group of answer choices

n

infinite

2

p(x)

Question 6

2pts

The mean of a binomial distribution is found using which of the following formulas?

Group of answer choices

p*x

q*x

n*p

p*q

Question 7

2pts

In binomial probabilities, q represents _______.

Group of answer choices

1-p

the probability of x

the negative probability

p-1

Question 8

2pts

A right skewed distribution has most of the data points to the _______ of the distribution.

Group of answer choices

right

top

left

middle

Question 9

2pts

A left skewed distribution can be described as __________.

Group of answer choices

a symmetrical distribution

having most data in higher values and a tail of data to the left

having most data in the lower values and a tail of the data to the right

having all data to the left side of the graph

Question 10

2pts

When considering if a probability distribution follows the expected distribution, we are considering the distribution's __________.

Group of answer choices

shape

normality

goodness of fit

symmetry