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4 cards from this section. Quick, good the night before a test.
What is the mean of a binomial distribution with n = 6 and p = 0.4?
Use the formula E(X) = np.
Calculate the standard deviation for a binomial distribution with n = 8 and p = 0.5.
Recall the standard deviation formula σ = √(np(1 - p)).
What is the formula for the mean of a binomial distribution?
Think about what the mean represents in your trials.
True or False: The variance of a binomial distribution is calculated as np(1-p).
Recall the definition of variance and its role.
A professor conducts an experiment allowing students to respond with either a 'yes' (success) or 'no' (failure). If the probability of a 'yes' is 0.4 and there are 12 trials, calculate the skewness and kurtosis.
Use the formulas provided for skewness and kurtosis.
A game involves rolling a die 8 times. Determine the variance and standard deviation of rolling a 3, with the probability of rolling a 3 denoted as 1/6.
Count on the binomial formula for variance and take the square root for SD.
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