Good credit: The Fair Isaac Corporation (FICO) credit score is used by banks and other lenders to determine whether someone is a good credit risk. Scores range from 300 to 850, with a score of 720 or more indicating that a person is a very good credit risk. An economist wants to determine whether the mean score is lower than the cutoff of 720. She finds that a random sample of 70 people had a mean FICO score of 705 with a stendard deviation of 83. Can the economist conclude that the mean FICO score is less than 720 Use the a0.05 level of significance and the Pevalue method with the T1-84 Plus calculator Part: 0/4 Part 1 of 4 State the appropriate null and alternate hypotheses. D>O H: This hypothesis test is a (Choose one) test. left-tailed rinhtetaild

Good credit: The Fair Isaac Corporation (FICO) credit score is used by banks and other lenders to determine whether someone is a good credit risk. Scores range from 300 to 850, with a score of 720 or more indicating that a person is a very good credit risk. An economist wants to determine whether the mean score is lower than the cutoff of 720. She finds that a random sample of 70 people had a mean FICO score of 705 with a stendard deviation of 83. Can the economist conclude that the mean FICO score is less than 720 Use the a0.05 level of significance and the Pevalue method with the T1-84 Plus calculator Part: 0/4 Part 1 of 4 State the appropriate null and alternate hypotheses. D>O H: This hypothesis test is a (Choose one) test. left-tailed rinhtetaild

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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In creating the null hypothesis for a hypothesis test for the standard deviation, it is wrong to write s = 30. Why is this so? ○ It just doesn't look and feel right. O Because my professor said so. O It should be the inequality sign, and not the equality sign. O Because hypothesis statements are about the popula- tion and not about the sample.
A magazine reported that at the top 50 business schools in a region, students studied an average of 13.3 hours. Set up a hypothesis test to try to prove that the mean number of hours studied at your school is different from the reported 13.3 hour benchmark. Complete parts (a) through (c) below. O E. H X#13.3 H: X= 13.3 P. Ho p=13.3 H, p#13.3 O G. H, p= 13.3 H, X+13.3 OH. H, p#13.3 H, p=13.3 OL H a 13.3 H: a = 13.3 O J. Ho a= 13.3 H a# 13.3 O K. H, p# 13.3 H1: X= 13.3 OL Ho B#13.3 H B= 13.3 b. What is a Type I error for your test? A. Concluding that the mean number of hours studied at your school is different from the reported 13.3 hour benchmark when in fact it is not different O B. Concluding that the mean number of hours studied at your school is different from the reported 13.3 hour benchmark when in fact it is different C. Concluding that the mean number of hours studied at your school is not different from the reported 13.3 hour benchmark when in fact it is different c. What is a…
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Determine whether to reject H. Reject - the null hypothesis H. Reject Do not reject Part: 4 /5 Part 5 of 5 (c) State a conclusion. There (Choose one) enough evidence to conclude that the mean tuition and fees for private institutions is less than $35.000. Is/is not
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You are interested in investigating whether gender and major are associated at your college. The table below shows the results of a survey. Math/Science Arts/Humanities Business/Econ. Other Men 76 109 73 49 Women 82 96 93 34 What can be concluded at the αα = 0.01 significance level? What is the correct statistical test to use? Independence Homogeneity Goodness-of-Fit Paired t-test What are the null and alternative hypotheses?H0:H0: The distribution of college major is the same for each gender. College major and gender are independent. College major and gender are dependent. The distribution of college major is not the same for each gender. H1:H1: College major and gender are independent. The distribution of college major is not the same for each gender. College major and gender are dependent. The distribution of college major is the same for each gender. The test-statistic for this data = (Please show your answer to three decimal places.) The p-value for…
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Which of the following is the name for the statistical hypothesis that describes no change, or nothing expected? Type I error Type II error Alternative hypothesis Null hypothesis
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