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
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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![Good credit: The Fair Issac Corporation (FICO) credit score is used by banks and other lenders to determine whether someone is a good credt 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 conclude 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](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F0d2611dc-885f-4f40-9697-052e74f17660%2F3a11c8c6-b556-433f-bcfb-7f77c91dae7b%2Feozx2jl_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Good credit: The Fair Issac Corporation (FICO) credit score is used by banks and other lenders to determine whether someone is a good credt 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 conclude 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
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