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 FICC score is lower than the cutoff of 720. She finds that a random sample of 55 people had a mean FICO score of 685 with a standard deviation of 80. Can the economist conclude that the mean FICO score is less than 720? Use the a=0.10 level of significance and the P-value method with the TI-84 Plus calculator. Part: 0 / 4 Part 1 of 4 State the appropriate null and alternate hypotheses. Н ロ<ロ ロ>ロ ロ=ロ H,: ロロ This hypothesis test is a (Choose one) v test. Part 2 of 4 Compute the P-value. Round the answer to at least four decimal places. P-value =
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 FICC score is lower than the cutoff of 720. She finds that a random sample of 55 people had a mean FICO score of 685 with a standard deviation of 80. Can the economist conclude that the mean FICO score is less than 720? Use the a=0.10 level of significance and the P-value method with the TI-84 Plus calculator. Part: 0 / 4 Part 1 of 4 State the appropriate null and alternate hypotheses. Н ロ<ロ ロ>ロ ロ=ロ H,: ロロ This hypothesis test is a (Choose one) v test. Part 2 of 4 Compute the P-value. Round the answer to at least four decimal places. P-value =
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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
Transcribed Image Text: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 FICO
score is lower than the cutoff of 720. She finds that a random sample of 55 people had a mean FICO score of 685 with a standard deviation of 80. Can the
economist conclude that the mean FICO score is less than 720? Use the a=0.10 level of significance and the P-value method with the TI-84 Plus calculator.
Part: 0/ 4
Part 1 of 4
State the appropriate null and alternate hypotheses.
Ho:
H:
This hypothesis test is a (Choose one) v
test.
Part 2 of 4
Compute the P-value. Round the answer to at least four decimal places.
P-value =

Transcribed Image Text:Part 3 of 4
Determine whether to reject Ho.
(Choose one) ▼
v the null hypothesis Ho.
の
Part: 3/ 4
Part 4 of 4
State a conclusion.
There (Choose one) v enough evidence to conclude that the mean FICO score is lower than the cutoff of 720.
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