Two researchers conducted a study in which two groups of students were asked to answer 42 trivia questions from aboard game. The students in group 1 were asked to spend 5 minutes thinking about what it would mean to be aprofessor, while the students in group 2 were asked to think about soccer hooligans. These pretest thoughts are a formof priming. The 200 students in group 1 had a mean score of 22.4 with a standard deviation of 4.4, while the 200students in group 2 had a mean score of 19.8 with a standard deviation of 4.1. Complete parts (a) and (b) below.(a) Determine the 90% confidence interval for the difference in scores, μ₁ −μ₂. Interpret the interval.The lower bound isThe upper bound is(Round to three decimal places as needed.)Interpret the interval. Choose the correct answer below.OA. There is a 90% probability that the difference of the means is in the interval.B. The researchers are 90% confident that the difference of the means is in the interval.C. The researchers are 90% confident that the difference between randomly selected individuals will be in theinterval.D. There is a 90% probability that the difference between randomly selected individuals will be in the interval.(b) What does this say about priming?A. Since the 90% confidence interval contains zero, the results suggest that priming does not have an effect onscores.B. Since the 90% confidence interval contains zero, the results suggest that priming does have an effect onscores.

Answered: Image /qna-images/answer/c43b04d9-33ab-4220-ba9e-3a8ce14a0492.jpg

Answered: The upper bound is (Round to three…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Sarah throws a fair die multiple times, recording the total number of "2"s she throws and then calculating the proportion of "2"s she has thrown so far after each throw. She then constructs a graph to visualize her results. Which of the following statements is FALSE? a. This is an example of the law of large numbers. b. The theoretical probability of getting a 2 is 0.167 for each throw. c. The relative frequency of "2"s thrown changes as Sarah throws the die more. d. The probability distribution for the possible number of outcomes changes as the total number of throws increases.
Which of the following statements are true?
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The values listed below are waiting times (in minutes) of customers at two different banks. At Bank A, customers enter a single waiting line that feeds three teller windows. At Bank B, customers may enter any one of three different lines that have formed at three teller windows. Answer the following questions. Bank A 6.4 6.6 6.7 6.8 7.1 7.3 7.5 7.7 7.7 7.7 Bank B 4.2 5.5 5.7 6.2 6.7 7.8 7.8 8.5 9.3 10.0 Click the icon to view the table of Chi-Square critical values. Construct a 95% confidence interval for the population standard deviation o at Bank A. min< OBank A min (Round two decimal places as needed.) Construct a 95% confidence interval for the population standard deviation o at Bank B. min < OBank B < min (Round to two decimal places as needed.) Interpret the results found in the previous parts. Do the confidence intervals suggest a difference in the variation among waiting times? Does the single-line system or the multiple-line system seem to be a better arrangement? O A. The…
Determine which statistic you would use. 1. A psychologist studied if cognitive intelligence was associated with emotional intelligence in50 people. Cognitive intelligence was measured by averaging each person’s scores on tests ofvocabulary and visual problem solving. Emotional intelligence was measured by theparticipant’s score for accurately describing the moment-by-moment emotional reactionsof three people in a filmed interaction 2. A psychologist is interested in whether exercise increases the intensity of REM sleep in adults in three age groups (younger, middle age, older) She obtains 40 people in each age group and randomly assigns half of them to daily exercise or not in a 2 (exercise vs. not) X 3 (age group) design • REM sleep is measured by rating the vividness of dreams recorded in daily dream diaries collected for one week– Bland dreams = 1; very vivid dreams = 5 3. A psychologist believes physical experiences influence perception, such that a hill will appear steeper if…
Express the alternative hypothesis in symbolic form. A psychologist claims that the mean amount of time (in hours) that females spend in talk therapy is more than that of men. Assume that two samples are independent. Let the female talk therapy times be the first population and the male talk therapy times be the second population.
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I need help solving d-f
There are 20 different pairs of shoes. Pick at random 10 shoes. Let X be the number of paired shoes, M be the number of shoes that are left-foot, N be the number of shoes that are right-foot. (a) Find the distribution of X. Show your problem-solving process (not just the final answer) with a few sentences of explanation and give the formula (b) Let Y = M – N. Give all possible values of Y. Find the distribution of Y. Show your problem-solving process (not just the final answer) with a few sentences of explanation and give the formula. (c) let Z = |Y|, compute E(X), Var(X), E(Z) and Var(Z). Show your problem-solving process (not just the answer), keep 2 decimal places for E(X) and E(Z), and use the approximate values for the calculations of Var(X) and Var(Z).

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