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. Scoresrange 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 FICOscore is lower than the cutoff of 720. she finds that a random sample of 40 people had a mean FICO score of 680 with a standard deviation of 90, Can theeconomist conclude that the mean FICO score is less than 720? Use the a=0.01 level of significance and the P-value method with the TI-84 Plus calculator.Part: 0 / 4Part 1 of 4State the appropriate null and alternate hypotheses.D-0H:This hypothesis test is a (Choose one) ▼test.Part 2 of 4Compute the P-value. Round the answer to at least four decimal places.P-value =Part: 2/ 4Part 3 of 4Determine whether to reject H(Choose one) ▼the null hypothesis H.Part 4 of 4State a conclusion.There (Choose one) v enough evidence to conclude that the mean FICO score is lower than the cutoff of 720.

*Answer: Given that Hypothesized Population Mean (\mu)(μ) = 720720 Sample Standard Deviation…

Answered: ate null and alternate hypotheses. O0…

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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please answer all parts
STAT&PROB11-Finals The Language of Hypothesis Testing Suppose we wish to test H, : µ47. What will be the result if we conclude that the mean is greater than 47 when its true value is really 52? O We have made a Type I error. O We have made a Type II error. O We have made a correct decision. O None of the above is correct. 30 31 32 33 34 35 36 37 38 Nex 29
How to solve it on TI-84 Plus CE and Excel?
Testing to see if there is evidence that a mean is less than 50.
Week 9 – Hypothesis Testing oExamples of null and alternative hypotheses that are one and two sided, explaining how to distinguish between them. oExamples of z-test for proportion, z-test for mean, t-test for mean with explanations of when you use each one and why, with computations. oInterpretations of p-values for each of the above with context
9.63 What is meant by the power of a test? 9.64 What is the difference between a one-tail test and a two-tail test? 9.65 What is meant by a p-value?
lume in The following numbers are the differences in pulse rate (beats per minute) before and after running for 12 randomly selected people. Positive numbers mean the pulse rate went up. Test the hypothesis that the mean difference in pulse rate was more than 0, using a significance level of 0.05. Assume the population distribution is Normal. 22, 11, 14, 10, 13, 7, 0, 2, 12, 41, 0, and 12 O Determine the null and alternative hypotheses. Choose the correct answer below.
Claim: Fewer than 93% of adults have a cell phone. In a reputable poll of 1041 adults, 88% said that they have a cell phone. Find the value of the test statistic. Question content area bottom Part 1 The value of the test statistic is enter your response here. (Round to two decimal places as needed.)
Q30
According to the NY Times Almanac the mean family size in the US. Is 3.18. A sample of a college math class resulted in the following family sizes: 5; 3; 5; 4; 4; 3; 7:43254633; 27: 4:53; 23;4;2 At a 0.05 level, is the class's mean family size greater than the national average? Note: If you are using a Student's t-distribution for the problem, you may assume that the underlying population is normally distributed. (In general, you must first prove that assumption, though.) Fart tal State the null hypothesis. ⒸH: 44-3.18 ⒸH: 43.18 OH H=318 OM 4>3.18 State the alternative hypothesis. OH ≤3.18 OH, μ<3.18 - Hattila ⒸH-43.18
what is the chi-square test for goodness of fit for the study (use the 0.01 level)State the null and research hypotheses?Determine the cutoff sample score at which the null hypothesis should be rejected.?what is the cutoff score ? Solve for A-F based on the chart attached?

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ate null and alternate hypotheses. O0 D-0 test is a (Choose one) test. Round the answer to at least four decimal places. to reject Hg. the null hypothesis H. enough evidence to conclude that the mean FICO score is lower than the cutoff of 720.