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Describe how you could find the scores at the 20 th and 60 th percentiles in a set of 80 scores.

Statistics A multiple-choice test has ten questions. Each question has five choices, with only one correct. Statisticians consider a "rare" event to have less than a 5\(\%\) chance of occurring. According to this standard, what grades would be rare on this test if you guess? Justify your answer.

A multiple-choice quiz contains five questions, each with three answer choices. You select all five answer choices at random. What is the best estimate of the probability that you will get at least four answers correct? \(\begin{array}{llll}{\text { A. } 4.1 \%} & {\text { B. } 4.5 \%} & {\text { C. } 13.2 \%} & {\text { D. } 46,1 \%}\end{array}\)

Suppose that \(x\) and \(y\) vary inversely. Write a function to model inverse variation. \(x=-3\) when \(y=3\)