Mathematics, 12.10.2020 01:01 sriggins917
The exam in a course consists of 25 true/false questions, each worth two points, 35 multiple-choice questions, each worth one point, and 5 fill-in-the-blank questions, each worth three points. The probability that a student answers a true/false question correctly is 0.8, the probability that they answer a multiple-choice question correctly is 0.75, and the probability that they answer a fill-in-the-blank question correctly is 0.65. What is the expected score on the exam? Now consider the case where an incorrect answer on a true/false question results in a penalty of −1 point. 2 What is the resulting expected score?
Answers: 1
Mathematics, 20.06.2019 18:04
Arectangle has an area of 54 square feet. if the length is 3 feet more than the width, find the dimensions of the rectangle.
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Which expression is equivalent to 8(k + m) − 15(2k + 5m)?
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Mozart lenses inc. recently introduced seelites, a thinner lens for eyelasses. of a sample of 800 eyeglass wearers, 246 said they would purchases their next pair of eyeglasses with the new lenses. lenses inc. estimates that the number of people who purchase eyeglasses in a year is 1,700,000. most eyeglasses wearer buy one new pair of eyeglasses a year. what is the annual sales potential for the new lenses.
Answers: 1
The exam in a course consists of 25 true/false questions, each worth two points, 35 multiple-choice...
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