3 Last year, television station WXYZ's share of the 11 P.M. news audience wasapproximately equal to, but no greater than, 25 percent. The station'smanagement believes that the current audience share is higher than lastyear's 25 percent share. In an attempt to substantiate this belief, the stationsurveyed a random sample of 400 11 P.M. news viewers and found that 146watched WXYZ.A. Use the critical value and the p-value approaches to test thehypotheses of the station's claim that the current audience share forWXYZ is higher than last year's 25 percent share at the 0.1, 0.05, 0.01and 0.001 levels of significance.B. Based on your results in part a, how much evidence is there that thecurrent audience share is higher than last year's 25 percent share?C. Do you think that the result of the station's survey has practicalimportance? Why or why not?

Given : p = 0.25 x = 146 n = 400 p^ = xn = 146400 = 0.365

Answered: Last year, television station WXYZ's…

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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Last year, television station WXYZ's share of the 11 P.M. news audience was
approximately equal to, but no greater than, 25 percent. The station's
management believes that the current audience share is higher than last
year's 25 percent share. In an attempt to substantiate this belief, the station
surveyed a random sample of 400 11 P.M. news viewers and found that 146
watched WXYZ.
A. Use the critical value and the p-value approaches to test the
hypotheses of the station's claim that the current audience share for
WXYZ is higher than last year's 25 percent share at the 0.1, 0.05, 0.01
and 0.001 levels of significance.
B. Based on your results in part a, how much evidence is there that the
current audience share is higher than last year's 25 percent share?
C. Do you think that the result of the station's survey has practical
importance? Why or why not?

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I managed to figure out most of it, but I have been presented with a few questions that I could not figure out. First, I am having issues deciphering the P^ value. Second , I am having an issue determining the sample portion? and I need assistance. The number that I came up with is not the correct number.