Standard 9 Check Point

Front

What is the probability of getting at least 13 heads when flipping a coin 20 times?

Back

13%.

Front

How do you calculate the variance and standard deviation for a quarterback with a 70% passing percentage over 40 passes?

Back

Variance: 8.4, Standard Deviation: 2.9.

Front

What is Barry Bonds' career batting average and the probability of getting on base 6 times in 10 at bats?

Back

Batting Average: .298, Probability: 4%.

Front

What is the probability of getting at most 3 correct answers when randomly guessing on 6 multiple choice questions with 4 choices each?

Back

96%.

Front

If a quarterback has a 70% passing percentage, how many passes will he complete on average in 20 attempts?

Back

14 passes.

Front

Define probability in the context of flipping a coin.

Back

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

Front

What is the formula for calculating variance in a binomial distribution?

Back

Variance = n * p * (1 - p), where n is the number of trials and p is the probability of success.

Front

Explain the concept of standard deviation in statistics.

Back

Standard deviation measures the amount of variation or dispersion in a set of values.

Front

What is a binomial distribution?

Back

A binomial distribution is a probability distribution that summarizes the likelihood that a value will take one of two independent states.

Front

How do you find the expected value in a probability distribution?

Back

Expected Value = Σ (x * P(x)), where x is the value and P(x) is the probability of x.