Find 95% confidence intervals for the average call times and proportion of backinjuries in each year. What conclusions would you reach based on your results?36. For the data in the Excel file Education and Income, find 95% confidence intervals forthe mean annual income of males and the mean annual income of females. Can youconclude that the mean income of one group is larger than the other?37. For the data in the Excel e Debt and Retirementce intervals for the23456788910111213141516171819202122232425262728AGender AgeFemale 40-60Female 25-39Male40-60Female 25-39Female 25-39Female 40-60Female25-39Female 25-39Male 25-3940-6040-6018-2425-3929-3925-3940-6025-3925-39OF 2025-3905 0025-39OF 00FemaleFemaleFemaleFemaleMaleMaleFemaleMaleMaleMaleFemale25-39Male 25-3918-2425-3918-24FemaleFemaleMaleLevel of Education Gross Annual IncomeGraduate Degree$75,000Bachelor's Degree$47,000High School/GED$40,000$30,000Some CollegeSome CollegeCollegeBachelor's DegreeBachelor's DegreeBachelor's DegreeBachelor's DegreeBachelor's DegreeGraduateSome CollegeDegreeBachelor's DegreeBachelor's DegreeGraduate DegreeAssociates DegreeHigh School/GEDSome CollegeOne CongoGraduate DegreeHogeSome CollegeBachelor's DegreeBachelor's DegreeBachelor's DegreeBachelor's Degree$60,000$80,000$10,00012.000$43,000$130,000$89,000$50,000$13,462$85,000$60,000$200,0000,000$44,0002000$26,000920,000$46,100645.000$15,000$15,288$58,000$10,000$85,000$20,000

The data set for the annual income of males and females is,GenderGross Annual…

Answered: 36. For the data in the Excel file…

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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Home values tend to increase over time under normal conditions, but the recession of 2008 and 2009 has reportedly caused the sales price of existing homes to fall nationwide (Businessweek, March 9, 2009). You would like to see if the data support this conclusion. The file HomePrices contains data on 30 existing home sales in 2006 and 40 existing home sales in 2009.a) Provide a point estimate of the difference between the population mean prices for the two years.b) Develop a 99% confidence interval estimate of the difference between the resale prices of houses in 2006 and 2009.c) Would you feel justified in concluding that resale prices of existing homes have declined from 2006 to 2009? Why or why not? 2006 ($1000s) 2009 ($1000s)213100 155400226200 189800239100 200800214300 280400161700 213200181200 181100228600 117400222100 130000228900 170000235800…
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36. For the data in the Excel file Education and Income, find 95% confidence intervals for the mean annual income of males and the mean annual income of females. Can you conclude that the mean income of one group is larger than the other? 37. Fo Excel file Dabi and Retirement S