Chat with AIExam 12: Comparing Multiple Proportions, Test of Independence and Goodness of Fit
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Exam 5: Discrete Probability Distributions81 Questions
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Exam 10: Inference About Means and Proportions With Two Populations61 Questions
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Exam 12: Comparing Multiple Proportions, Test of Independence and Goodness of Fit45 Questions
Exam 13: Experimental Design and Analysis of Variance67 Questions
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Last school year, the student body of a local university consisted of 30% freshmen, 24% sophomores, 26% juniors, and 20% seniors.A sample of 300 students taken from this year's student body showed the following number of students in each classification. Freshmen 83 Sophomores 68 Juniors 85 Seniors 64 We are interested in determining whether or not there has been a significant change in the classifications between the last school year and this school year.The p-value is
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(36) Last school year, the student body of a local university consisted of 30% freshmen, 24% sophomores, 26% juniors, and 20% seniors.A sample of 300 students taken from this year's student body showed the following number of students in each classification. Freshmen 83 Sophomores 68 Juniors 85 Seniors 64 We are interested in determining whether or not there has been a significant change in the classifications between the last school year and this school year.At a .05 level of significance, the null hypothesis
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(31) The owner of a car wash wants to see if the arrival rate of cars follows a Poisson distribution.In order to test the assumption of a Poisson distribution, a random sample of 150 ten-minute intervals was taken.You are given the following observed frequencies: Number of Cars Arriving Frequency in a 10-Minute Interval 0 3 1 10 2 15 3 23 4 30 5 24 6 20 7 13 8 8 9 or more 4 150 The p-value is
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(32) Marascuilo procedure is used to test for a significant difference between pairs of population
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(37) Last school year, the student body of a local university consisted of 30% freshmen, 24% sophomores, 26% juniors, and 20% seniors.A sample of 300 students taken from this year's student body showed the following number of students in each classification. Freshmen 83 Sophomores 68 Juniors 85 Seniors 64 We are interested in determining whether or not there has been a significant change in the classifications between the last school year and this school year.The expected frequency of seniors is
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