Let k be the number of successes (green) when the spinner is spun 4 times. The graph shows the distribution of k. Slide the slider to change p. What effect does this have on the distribution? Check all of the boxes that apply.

Each spin has the same probability p of success, and there are 4 spins, so k follows a binomial distribution. The number of successes ranges from 0 to 4; when p is exactly 0 or 1, the distribution concentrates on one of those outcomes. At p = 0.5, outcomes on either side of 2 successes have matching probabilities, making the distribution symmetric. When p is close to 1, getting 3 or 4 successes is most likely.

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