11% of the adults in a community are unemployed. a. If 20 a…
11% of the adults in a community are unemployed. a. If 20 adults are randomly selected, without replacement, what is the probability that exactly two are unemployed? Use your calculator. (Record the calculator command to show your work.) b. If 20 adults are randomly selected, without replacement, what is the probability that at least one is unemployed. Use formulas. c. Find the mean and standard deviation for the number of unemployed adults in samples of size 250 from this community.
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