24.25: Statistics & Probability Midterm: Pre-Test

Front

What is the probability of rolling a 2 on a standard number cube?

Back

1/6

Front

If a student reviews for their statistics exam with a probability of 0.8 and has a 90% chance of passing, what is the probability that a randomly chosen statistics student failed the exam?

Back

0.23

Front

By definition, independent events _________________________ .

Back

are not affected by each other

Front

In a normal distribution, what is the probability that a value is greater than the mean?

Back

50% (since the mean divides the distribution in half)

Front

What is the standard deviation in a normal distribution?

Back

A measure of the amount of variation or dispersion of a set of values.

Front

What does it mean if two events are mutually exclusive?

Back

They cannot occur at the same time.

Front

What is the formula for calculating the probability of an event?

Back

P(Event) = Number of favorable outcomes / Total number of outcomes

Front

In a Venn diagram, what does the intersection represent?

Back

The elements that are common to both sets.

Front

What is the probability of an event that is certain to happen?

Back

1 (or 100%)

Front

What is the probability of an event that is impossible?

Back

0 (or 0%)