Question: In a study of 1004 randomly selected adults, 37% of the sample described themselves as middle class. a. If four participants of the study are

In a study of 1004 randomly selected adults, 37% of the sample described themselves as middle class.
a. If four participants of the study are randomly selected with replacement, what is the probability that all four describe themselves as middle class? Round your result to five decimal places.
b. If four participants of the study are randomly selected with replacement, what is the probability that at least one participant describes himself or herself as middle class? Round your result to five decimal places.
c. The randomly selected participants were asked to complete an online survey. What types of bias likely occurred?

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