the following information to answer A-D. A quiz consists of 10 multiple-choice questions, each having 4 possible answers (a,b,c,d), one of which is correct. [Hint: think binomial, a question is either correct or incorrect] a) What is the mean (to the nearest 0.1) number of questions that are correct assuming you guessed on all 10 questions? b) What is the standard deviation (to

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A:

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A: Given:Margin of error(E)=7Standard deviation(s)=28.70

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A: Hey there! Thank you for posting the question. Since there are multiple questions posted, we will…

Q: cash($) freq 1 1 5 6 20 10 44 1 985 1

A: A random sample of 20 students; n=20 The frequency table is Cash Frequency 0 1 1 1 5 6 20…

Q: Seth asked a random sample of 20 students how much cash they had in their pocket. The following…

A: given data,n = 20here we have to find out the sample standard deviation for grouped data, x f fx…

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A: Given : Total number of marbles =11+12+6=29 Number of red marbles =11

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Q: Given that the mean for a data set is 24.8 and the standard deviation is 2.3, find the z-score of…

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Q: Solve the following: Given the average age of a man which is 50 years old and has a diabetes with…

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A: For the given data Select the correct choice

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Q: Suppose that in College Entrance Test, the cutoff score for passing is 85. If the mean of the test…

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Q: Forty randomly selected students were asked the number of pairs of sneakers they owned. Let X = the…

A: Given  n=40

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Q: On average, 13% of guests at a restaurant order the chef's steak special. The chef is expecting 120…

A: We are given: p = 0.13 n = 120

Q: You survey 5 of your friends regarding their score on a test. The results are as follows: 80 50 95…

A: Solution: Let X be the test score. The given data is 80, 50, 95, 90 and 70.

Q: Use the Empirical Rule to find the number of scores falling into each of the following intervals: a.…

A: The Empirical rule says that for bell- shaped distribution,  About 68% of observations lie within 1…

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Q: Refer to the accompanying​ table, which describes the number of adults in groups of five who…

A: Data given  X P(X=x) 0 0.176 1 0.366 2 0.301 3 0.119 4 0.033 5 0.005

Q: . sample mean x̄ ____________ B. sample standard deviation

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Q: A group of eight college students were asked how many hours they slept the previous night. The…

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Q: Isabella's points per game of bowling are normally distributed with a standard deviation of 8…

A: Answer is explained below-