Calculus and Above

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A student wants to see if the correct answers to multiple
A student wants to see if the correct answers to multiple choice problems are evenly distributed. She heard a rumor that if you don't know the answer, you should always pick C. In a sample of 99 multi… read more
MunishK
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Solve the problem. On a multiple choice test with 19
Solve the problem.On a multiple choice test with 19 questions, each question has four possible answers, one of which is correct. For students who guess at all answers, find the mean for the number of … read more
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Kofi
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In 2016 Americans owed​ $1.3 trillion in student loans. The
In 2016 Americans owed​ $1.3 trillion in student loans. The default rates of college student loans determine eligibility for colleges to receive federal student aid. According to the Department of​ Ed… read more
Scott
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Assume that random guesses are made for multiple choice
Assume that random guesses are made for multiple choice questions on an SAT​ test, so that there are n=9 ​trials, each with probability of success​ (correct) given by p=0.65. Find the indicated probab… read more
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A multiple-choice examination consists of 95 questions, each
A multiple-choice examination consists of 95 questions, each having possible choices a, b, c, and d. Approximate the probability that a student will get more than 20 answers correct if he randomly gue… read more
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Kofi
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Suppose we roll a pair of fair dice, let A=the numbers I
Suppose we roll a pair of fair dice, let A=the numbers I rolled add up to exactly 8, and let B=the numbers I rolled multiply to an even number. Find P(Bc|A). … read more
rajeevanpillai
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​(a) If a student guesses at the​ answer, what is the
​(a) If a student guesses at the​ answer, what is the probability that he or she selects the correct answer for one particular​ question? ​(​b) If the student first eliminates two of the five possible… read more
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Suppose a student is taking a multiple choice test that has
Suppose a student is taking a multiple choice test that has 10 questions, each with possible choices A, B, C, D, or E, and only one of which is correct. If the student simply guesses at each question:… read more
Kofi
Kofi
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Multiple Choice Strategy: Some students have suggested that
Multiple Choice Strategy: Some students have suggested that if you have to guess on a multiple-choice question, you should always choose C. Carl, the student, wants to investigate this theory. He is a… read more
Sandhya_sharma
Sandhya_sharma
Master's Degree
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Multiple Choice Strategy: Some students have suggested that
Multiple Choice Strategy: Some students have suggested that if you have to guess on a multiple-choice question, you should always choose C. Carl, the student, wants to investigate this theory. He is a… read more
Sandhya_sharma
Sandhya_sharma
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1. When 3 marbles are drawn from a bag without replacement.
1. When 3 marbles are drawn from a bag without replacement. There are 5 purple, 6 green, 2 blue and 4 white marbles in the bag. Find the probability of getting.a) All green marbles. b) A purple, then … read more
Kofi
Kofi
PhD in Statistics
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I need to know how to do probability. I need help with this
Richard has just been given a 4-question multiple-choice quiz in his history class. Each question has five answers, of which only one is correct. Since Richard has not attended class recently, he doesn't know any of the answers. Assuming that Richard guesses on all four questions, find the indicated probabilities. (Round your answers to three decimal places.) (a) What is the probability that he will answer all questions correctly?… read more
Ryan
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1. Five males with a particular genetic disorder have one child
1. Five males with a particular genetic disorder have one child each. The random variable x is the number of children among the five who inherit the genetic disorder. Determine whether the table descr… read more
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Bachelor's Degree
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Multiple Choice. Solve the problem. Highlight or circle the
Multiple Choice. Solve the problem. Highlight or circle the correct answer. 1) The manager of a small retail store counted the number of sales each hour during a 60-hour week. The frequency distributi… read more
SusanAthena
SusanAthena
Master's Degree
Master's Degree
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(1) For the following statement write the null hypothesis and
(1) For the following statement write the null hypothesis and the alternative hypothesis also label which one is the claim. A car manufacturer claims that their cars makes at least 35 miles per gallon… read more
Chirag
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1. A pizza restaurant manager claims that eh average home delivery
1. A pizza restaurant manager claims that eh average home delivery time for their pizza is no more than 18 minutes. A random sample of 36 home delivery pizzas was collected. The sample means was found… read more
Ryan
Ryan
Bachelor's Degree
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1.Assume that the weight loss for the first month of a diet
1.Assume that the weight loss for the first month of a diet program varies between 6 pounds and 12 pounds, and is spread evenly over the range of possibilities, so that there is a uniform distribution… read more
SusanAthena
SusanAthena
Master's Degree
Master's Degree
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A pop quiz is given. There are 8 multiple choice questions.
A pop quiz is given. There are 8 multiple choice questions. Each question has 4 choices only one of which is correct. You guess that answer for each question. Find the probability that you guess exact… read more
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