In New Jersey, banks have been charged with withdrawing from counties having a highpercentage of minorities. To substantiate this charge, P. D'Ambrosio and S. Chambers (1995)present the data in the following table concerning the percentage, x, of minority population andthe number of county residents, y, per bank branch in each of New Jersey's 21 counties.CountyAtlanticBergenBurlingtonCamdenCape MayCumberlandEssexGloucesterHudsonHunterdonMercerMiddlesexMonmouthMorrisOceanPassaicSalemSomersetSussexUnionWarrenPercentageof MinorityPopulation, x23.313.017.823.47.326.548.810.733.23.724.918.112.68.24.728.116.712.02.425.62.8Number ofResidents PerBank Branch, y3,0732,0952,9053,3301,3212,5573,4743,0683,6831,9982,6073,1542,6092,2532,3173,3072,5112,3332,5683,0482,349(a) By a scatter plot discuss why a simple linear regression can explain the relationshipbetween x and y.(b) Use R (minitab,....) and fit a simple linear regression(c) Interpret the regression coefficients(d) Test significance of the coefficients(e) For 50% minority of the population, predict the number of residents per bank branch.(f) Find a 95% confidence interval for the future average number of residents per bankbranch when 50% of the population is minority.(g) Find a 95% prediction interval for the future average number of residents per bankbranch when 50% of the population is minority.(h) Make a comparison between confidence interval and prediction interval

Solution: Consider the provided data of percentage of minority population (x) and the number of…

Answered: County Atlantic Bergen Burlington…

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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Determine whether the given percentage is a statistic or a parameter and why. In a study of all 1018 students at Guttman, data showed that 10% live in Queens. a. Parameter because the value is a numerical measurement describing a characteristic of a sample. b. Statistic because the value is a numerical measurement describing a characteristic of a sample. c. Parameter because the value is a numerical measurement describing a characteristic of a population. d. Statistic because the value is a numerical measurement describing a characteristic of a population.
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