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
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Chapter1: Starting With Matlab
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see pictures. 
 
1-   2 answers and choose one (right-tailed, left-tailed, two-tailed)
 
2- P=value
 
3-  Choose one (reject/do not reject)
▼(Choose one) the null hypothesis H0.
 
 
 
 
4- Choose one (is/is not)
There ▼(Choose one) enough evidence to conclude that the mean FICO score is lower than the cutoff of 720.
 
 
 
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 thata person is a very good credit isk. 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 stendard 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 Pevalue method with the TI-84 Plus calculator.
Part: 0/4
Part 1 of 4
State the appropriate null and alternate hypotheses.
This hypothesis test is a (Choose one)
left-tailed
right-tailed
test.
two-tailed
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 thata person is a very good credit isk. 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 stendard 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 Pevalue method with the TI-84 Plus calculator. Part: 0/4 Part 1 of 4 State the appropriate null and alternate hypotheses. This hypothesis test is a (Choose one) left-tailed right-tailed test. two-tailed
Part 2 of 4
Compute the P-value. Round the answer to at least four decimal places.
P-value =
Part: 2/ 4
Part 3 of 4
Determine whether to reject H:
(Choose one) v the null hypothesis Ho.
Reject
Do not reject
Transcribed Image Text:Part 2 of 4 Compute the P-value. Round the answer to at least four decimal places. P-value = Part: 2/ 4 Part 3 of 4 Determine whether to reject H: (Choose one) v the null hypothesis Ho. Reject Do not reject
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