AP Stats Unit 4 Review

Front

What is the probability of selecting a non-faulty battery from Brand A?

Back

To find the probability, use the formula: P(A|Non-faulty) = P(Non-faulty|A) * P(A) / P(Non-faulty). Given that Brand A has 3 non-faulty out of 10 total batteries, and 30% of Brand A batteries are faulty, the probability is 0.33.

Front

What does it mean for two events to be mutually exclusive?

Back

Two events are mutually exclusive if they cannot occur at the same time. For example, picking an ace and picking a '3' from a deck of cards are mutually exclusive events.

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CCSS.HSS.CP.A.2

CCSS.HSS.CP.A.4

Front

How do you calculate the probability of an event?

Back

Probability is calculated as the number of favorable outcomes divided by the total number of possible outcomes.

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CCSS.7.SP.C.7A

Front

What is the mean and standard deviation of IQ scores?

Back

IQ scores are normally distributed with a mean of 100 and a standard deviation of 15.

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CCSS.HSS.ID.A.4

Front

What is the probability of selecting an IQ score above 90?

Back

Using the normal distribution, the probability of selecting an IQ score above 90 is approximately 0.748.

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CCSS.HSS.ID.A.4

Front

How many different combinations can be made with 4 trim levels, 5 colors, and 3 interiors?

Back

The total combinations can be calculated by multiplying the options: 4 * 5 * 3 = 60.

Front

What is conditional probability?

Back

Conditional probability is the probability of an event occurring given that another event has already occurred.

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CCSS.HSS.CP.A.3

CCSS.HSS.CP.A.5

Front

What is the formula for conditional probability?

Back

The formula for conditional probability is P(A|B) = P(A and B) / P(B).

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CCSS.HSS.CP.A.3

CCSS.HSS.CP.A.5

Front

What is a normal distribution?

Back

A normal distribution is a probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean.

Front

What does it mean for a distribution to be skewed?

Back

A skewed distribution is one where the data points are not symmetrically distributed around the mean, leading to a longer tail on one side.