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Description: A Gallop Poll in 2015 found that 75% of respondents believed in an afterlife, 15% were not sure or didn't have an opinion and 10% didn't believe in an afterlife. Suppose that a survey taken this year of 1000 randomly selected people had the followin

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 Gallop Poll in 2015 found that 75% of respondents believed in an afterlife, 15% were not sure or didn't have an opinion and 10% didn't believe in an afterlife. Suppose that a survey taken this year of 1000 randomly selected people had the following results.

Answer following Qs

Calculate the value of the test statistic.

What is the degrees of freedom for this test.

Find the p-value within the accuracy of the tables (i.e. an interval, 0.05 < p-value < 0.10)

Based on your p-value we would _______________ (reject/fail to reject) the null hypothesis.

If we wish to test:
H. : Pyes = 0. 75, pnot sure = 0. 15, pno = 0. 10
Ha : At least one is different
using alpha = 5%

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