Good credit: The Fair Isaac Corporation (FICO) credit score is used by banks and other lenders to determine whether someone is a good credie nisk. 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 FICO 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 standard deviation of 83. Can the economist conciude that the mean FICO score is less than 720? Use the a = 0.05 level of significance and the P-value method with the T-84 Plus calculator. Part 1 of 4 ie the appropriate null and alternate hypotheses. D=0 This hypothesis test is a right-taled test. left-tailed right-talled two-tailed

Good credit: The Fair Isaac Corporation (FICO) credit score is used by banks and other lenders to determine whether someone is a good credie nisk. 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 FICO 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 standard deviation of 83. Can the economist conciude that the mean FICO score is less than 720? Use the a = 0.05 level of significance and the P-value method with the T-84 Plus calculator. Part 1 of 4 ie the appropriate null and alternate hypotheses. D=0 This hypothesis test is a right-taled test. left-tailed right-talled two-tailed

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.4: Distributions Of Data

Problem 19PFA

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