Author Question: On a multiple choice test with 10 questions, each question has four possible answers, one of which ... (Read 53 times)

notis · **on:** Apr 14, 2020

Question 1

In a certain town, 80 percent of voters are in favor of a given ballot measure and 20 percent are opposed. For groups of 140 voters, find the expected number of voters who oppose the measure.
◦ 80
◦ 20
◦ 112
◦ 28

Question 2

On a multiple choice test with 10 questions, each question has four possible answers, one of which is correct. For students who guess at all answers, find the standard deviation for the number of correct answers.
◦ 18.8
◦ 3.5
◦ 1.4
◦ 1.9

fur · **Reply #1 on:** Apr 14, 2020

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Only 59% of students answer this correctly