Midterm Exam Practice Questions

Front

What does P(A) = 0.12 indicate about event A?

Back

Event A will not happen most of the time, but it is not an extremely rare event.

Front

How do you calculate the probability of a randomly chosen female having pierced ears if 288 out of 320 females have them?

Back

The probability is calculated as 288/320.

Front

What is the estimated probability of a full-term birth given that there are 3,952,841 total births and 456,553 are preterm?

Back

The estimated probability of a full-term birth is 0.8845.

Front

If a fair 6-sided die is rolled 180 times, how many times should a 6 theoretically appear?

Back

A 6 should theoretically appear 30 times.

Front

What is the estimated probability of multiple births given that there are 3,952,841 total births and 130,839 are twins and 4919 are triplets?

Back

The estimated probability of multiple births is 0.0343.

Front

Define probability in the context of events.

Back

Probability is a measure of the likelihood that an event will occur, expressed as a number between 0 and 1.

Front

What is a fair die?

Back

A fair die is one where each face has an equal chance of landing face up when rolled.

Front

Explain the concept of preterm birth.

Back

A preterm birth is when a baby is born before 37 weeks of pregnancy have been completed.

Front

What is the significance of the Centers for Disease Control and Prevention (CDC) in health statistics?

Back

The CDC provides data and statistics on health-related issues, including birth statistics, which are crucial for public health research.

Front

How do you interpret a probability of 0.8845?

Back

A probability of 0.8845 indicates a high likelihood of the event occurring, meaning it is expected to happen in approximately 88.45% of cases.