A survey of the white and nonwhite population in a local area reveals the following annual trip frequencies to the nearest state park: X̄1 = 4.1 X̄2= 3.1 s21 = 14.3 s22= 12.0 N1= 20 N2= 16 Where the subscript '1' denotes the white population and the dubscript '2' denotes the nonwhite population.(a) assume the variances are equal, and test the null hypothesis that there is no difference between the park-going frequences of whites and nonwhites(b) repeat the exercise, assuming that the variances are unequal (c) Find the p-value associated with the tests in parts (a) and (b) (d) Associated with the test in part (a), find a 95% confidence interval for the difference in means (e) repeat parts a-d, assuming sample sizes of n1= 24 and n2= 12 annual trip frequencies to the nearest state park:where the subscript 1' denotes the white population and the subscript '2' denotes the7. A survey of the white and nonwhite population in a local area reveals the followingI = 4.1,= 3.1,s = 14.3,s3= 12.0,n, = 20ng = 16nonwhite population.. Assume that the variances are equal, and test the null hypothesis that there isno difference between the park-going frequencies of whites and nonwhites.b. Repeat the exercise, assuming that the variances are unequal.G. Find the p-value associated with the tests in parts (a) and (b).d. Associated with the test in part (a), find a 95% confidence interval for thedifference in means.e. Repeat parts (a)–(d), assuming sample sizes of n, = 24 and n, = 12.Test the bynotheeis

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Description: A survey of the white and nonwhite population in a local area reveals the following annual trip frequencies to the nearest state park: X̄1 = 4.1 X̄2= 3.1 s21 = 14.3 s22= 12.0 N1= 20 N2= 16 Where the subscript '1' denotes the white population and the

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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 the white and nonwhite population in a local area reveals the following annual trip frequencies to the nearest state park:

X̄1 = 4.1

X̄2= 3.1

s²_{1 = 14.3}

s²_{2= 12.0}

N_{1= 20}

N_{2= 16}

Where the subscript '1' denotes the white population and the dubscript '2' denotes the nonwhite population.

(a) assume the variances are equal, and test the null hypothesis that there is no difference between the park-going frequences of whites and nonwhites

(b) repeat the exercise, assuming that the variances are unequal

(d) Associated with the test in part (a), find a 95% confidence interval for the difference in means

(e) repeat parts a-d, assuming sample sizes of n_{1= 24}and n₂= 12

annual trip frequencies to the nearest state park:
where the subscript 1' denotes the white population and the subscript '2' denotes the
7. A survey of the white and nonwhite population in a local area reveals the following
I = 4.1,
= 3.1,
s = 14.3,
s3= 12.0,
n, = 20
ng = 16
nonwhite population.
. Assume that the variances are equal, and test the null hypothesis that there is
no difference between the park-going frequencies of whites and nonwhites.
b. Repeat the exercise, assuming that the variances are unequal.
G. Find the p-value associated with the tests in parts (a) and (b).
d. Associated with the test in part (a), find a 95% confidence interval for the
difference in means.
e. Repeat parts (a)–(d), assuming sample sizes of n, = 24 and n, = 12.
Test the bynotheeis

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