Question

Based on data from a car bumper sticker​ study, when a car is randomly​ selected, the number of bumper stickers and the corresponding probabilities are as shown below. complete parts​ (a) through​ (d)

Answer 1

Does the given information describe a probability​ distribution?

Yes

Assuming that a probability distribution is​ described, find its mean and standard deviation.

The mean is equal to 0.6. The standard deviation is equal to 1.5

Use the range rule of thumb to identify the range of values for usual numbers of bumper stickers.

The maximum usual value is 3.5.

max: μ + 2σ = 0.578 + 2(1.462161414) = 3.502322828

The minimum usual value is 0.

min: μ – 2σ = 0.578 – 2(1.462161414) = -2.346322828

Is it unusual for a car to have more than one bumper​ sticker? Explain.

No, because the probability of having more than one bumper sticker is equal to 0.120 that is greater that 0.05