Work this problem involving a true/false and multiple choice test. Assume that the test has 7 true/false questions, and 11 muiltiple choice questions (3 options per questions), each with exactly one correct answer. If a student guesses randomly on each question, what is her expected score?

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A: We have given that,  Let x is a random variable are Binomially distributed .  Then,  Student guess…

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Q: In a  recent survey ,the  researchers  evaluated  about 5 different ice cream flavors and their…

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Q: Calculate and evaluate Cohen’s d and r2. What decision can you make and why? What do the results…

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Q: State whether you think the difference between what occurred and what you would expect by chance is…

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A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: The students of my Intro to Psychology course are starting to believe that I have a preferred letter…

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Q: Assuming that both tests measure the same kind of ability, who had the relatively higher score? It…

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Q: Suppose a multiple choice test contains 40 questions. If each question has 5 answer choices only one…

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Q: What type of error (Type I or Type II) do you risk incurring with the decision that you made in #3?

A: We need to find the type of error (Type I or Type II) with the decision that is made in #3.

Q: In an ESP test, one person writes down one of the letters A, B, C, D, or E and tries to…

A: The number of choices is 5.

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Q: The test you conducted is one tail or tep tail

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Q: Suppose a multiple choice test contains 40 questions. If each question has 5 answer choices only one…

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Q: . Below are the number of hours spent by teache and 12 students were selected at random to there is…

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A: Points for the correct answer (r)=+1 points for incorrect answer (w)=-1/4

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Q: Q2- Answer the following: a) A box having (10) blue balls, (6) red balls, and (4) white balls. (3)…

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Q: Suppose a multiple choice test contains 50 questions. If each question has 5 answer choices only one…

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Q: Illustrate the problem with doing t tests among all pairs of means?

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Q: A student believes that physical science professors are more authoritarian than social science…

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Q: Some people are in favor of reducing federal taxes to increase consumer spending and others are…

A: Sample space: Set of all possible outcomes of an experiment is called a sample space.

Q: A 10-item multiple choice test has 3 choices for each question. In how many ways can the test be…

A: Given that all questions have 3 choices.   There are total 10 questions.

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Counting Principles

In statistics, the counting principle can be said to be the concept in which the quantity of an item is determined. There can be a single item, or a group of items, or items that are related to each other. In every possible set of items, the quantity of the possible item groups or their sorting measures can be determined with counting principles.