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 gooc credit risk. An economist wants to determine whether the mean FICOScore is more than the cutoff of720. She finds that a random sample of 40 people had a mean FICD score of 7660 with a standard deviation of 95, Can theeconomist conclude that the mean FICO score is greater than 720? Use the a0.01 level of significance and the P-value method with the TI-84 Plus calculator. State a conclusion.There (Choose one)enough evidence to conclude that the mean FICO score is more than the cutoff of 720.isis not

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Answered: There (Choose one) venough evidence to…

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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A survey of 9 adults employed full-time was taken. Here are their reported numbers of hours worked per week: 46, 43, 41, 50, 41, 42, 49, 47, 38 Send data to calculator Send data to Excel |(a) What is the median of this data set? If your answer is not an integer, round your answer to one decimal place. (b) What is the mean of this data set? If your answer is not an n integer, round your answer to one decimal place. zero modes (c) How many modes does the data set have, and what are their values? Indicate the number of modes by clicking in the appropriate circle, and then indicate the value(s) of the mode(s), if applicable. one mode: O two modes: andn ?
suppose that a category of world-class runners are known to run a marathon (26 miles) in an average of 143 minutes with a standard deviation of 14 minutes. consider 49 of the races. Let x̅ = the average of the 49 races. I need help finding the median of the average running times. if someone could explain how to solve this problem that would be great
In a random sample of ten cell phones, the mean full retail price was $554.00 and the standard deviation was $167.00. Assume the population is normally distributed and use the t-distribution to find the margin of error and construct a 95% confidence interval for the population mean u. Interpret the results. Identify the margin of error. (Round to one decimal place as needed.)
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USA TODAYT reported that Americans spend 4.1 hours per weekday checking work email. This was an estimate based on a survey of 1,004 white-collar workers in the United States. n USE SALT (a) Suppose that you would like to know if there is evidence that the mean time spent checking work email for white-collar workers in the United States is more than half of the 8-hour work day. What would you need to assume about the sample in order to use the given sample data to answer this question? (Select all that apply.) O we would need to assume that the distribution of the population of times is normal or that the sample size is small. O we would need to assume that all observations are dependent or all observations are independent. O we would need to assume that the distribution of the population of times is not normal or that the sample size is small. O we would need to assume that all white-collar workers were surveyed or the sample is representative of the population of white-collar workers…
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There (Choose one) venough evidence to conclude that the mean FICO score is more than the cutoff of 720. is is not