Exam 18: The Binomial Test
Exam 1: Introduction to Statistics76 Questions
Exam 2: Frequency Distributions74 Questions
Exam 3: Central Tendency75 Questions
Exam 4: Variability75 Questions
Exam 5: Z-Scores: Location of Scores and Standardized Distributions77 Questions
Exam 6: Probability76 Questions
Exam 7: Probability and Samples: the Distribution of Sample Means77 Questions
Exam 8: Introduction to Hypothesis Testing76 Questions
Exam 9: Introduction to the T Statistic74 Questions
Exam 10: The T Test for Two Independent Samples75 Questions
Exam 11: The T Test for Two Related Samples76 Questions
Exam 12: Introduction to Analysis of Variance74 Questions
Exam 13: Repeated-Measures Analysis of Variance Anova75 Questions
Exam 14: Two-Factor Analysis of Variance Independent Measures75 Questions
Exam 15: Correlation76 Questions
Exam 16: Introduction to Regression75 Questions
Exam 17: The Chi-Square Statistic: Tests for Goodness of Fit and Independence75 Questions
Exam 18: The Binomial Test75 Questions
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In an ESP experiment,the participants are required to predict the suit of a card drawn randomly from a complete deck.If a participant correctly identifies the suit for 18 out of 48 trials,is the participant performing significantly better than chance? Test at the .05 level of significance.
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The sign test can be used as an alternative to the independent-measures t test.
(True/False)
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For a binomial test with p = 1/2 and n = 36,the z-score for X = 21 is z = +1.00.
(True/False)
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For a sample of n = 20,which of the following p values satisfies the criterion for using the normal approximation?
(Multiple Choice)
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In a binomial hypothesis test,the value for μ must always be a whole number (not a fraction or decimal value).
(True/False)
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The probability of correctly predicting the outcome of a coin toss is p = 1/2.What is the standard deviation of the normal approximation to the binomial distribution for the number of correct predictions in a series of 100 tosses?
(Multiple Choice)
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A binomial distribution has p = 1/3 and q = 2/3.How large a sample (n)is necessary to satisfy the criterion for using the normal approximation?
(Multiple Choice)
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What are the mean and standard deviation for the normal approximation to the binomial distribution with n = 100 and p = .20?
(Multiple Choice)
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Which test is often used for the same kind of research study for which the sign test is appropriate?
(Multiple Choice)
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For a binomial distribution based on n = 100,the standard deviation would be larger for p = 0.90 than for p = 0.80.
(True/False)
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A report noted that for the population of 9th graders,one-third of the students are unable to pass a quiz in basic geography.One teacher,having spent a great deal of time on geography instruction,gave the same quiz to a group of n = 72.Only X = 18 students in the group did not pass the test.The teacher would like to know if the number of students in this class who failed the quiz is significantly different from the general population.For this test,what is the z-score corresponding to X = 18?
(Multiple Choice)
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A local traffic light is set so that it cycles between 30 seconds of red and 30 seconds of green.What is the probability of randomly hitting a red light more than 25 times in n = 40 trips through the intersection?
(Essay)
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