Reference no: EM13909801
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. Let p be the current proportion of all 11 P.M. news viewers who watch WXYZ. Set up the null and alternative hypotheses needed to attempt to provide evidence supporting the claim that the current audience share for WXYZ is higher than last year's 25 percent share.
b. Use critical values and the following MINITAB output to test the hypotheses you set up in part a at the .10, .05, .01, and .001 levels of significance. How much evidence is there that the current audience share is higher than last year's 25 percent share?
|
Test of p = 0.25 vs p > 0.25
|
|
Sample X
|
N
|
Sample p
|
Z-Value
|
P-Value
|
|
1 146
|
400
|
0.365000
|
5.31
|
0.000
|
c. Find the p-value for the hypothesis test in part b. Use the p-value to carry out the test by setting a equal to .10, .05, .01, and .001. Interpret your results.
d. Do you think that the result of the station's survey has practical importance? Why or why not?
|
Find the characteristic polynomial of matrix
: Find the characteristic polynomial of matrix A. Show all details of your calculations. You want to complete this part by hand, but feel free to use technology to double-check your result
|
|
Do we estimate that m is less than four or greater than four
: Use critical values to test the hypotheses you set up by setting a equal to .10, .05, .01, and .001. (3) Do we estimate that m is less than 4 or greater than 4?
|
|
What condition must be satisfied in order for the methods
: Find the p-value for this test. Use the p-value to test H0 versus Ha by setting a equal to .10, .05, .01, and .001. What condition must be satisfied in order for the methods of this section to be appropriate?
|
|
The marketing ethics case- conflict of interest
: Assuming that the sample of 205 marketing researchers has been randomly selected. How much evidence is there that a majority of all marketing researchers disapprove of the actions taken?
|
|
Provide evidence support claim that current audience share
: Set up the null and alternative hypotheses needed to attempt to provide evidence supporting the claim that the current audience share for WXYZ is higher than last year's 25 percent share.
|
|
Controlled by a recessive gene
: Albinism in human is controlled by a recessive gene 'a'. If both parents were known to carrier (Aa) for albinism. What is the chances of 1 normal and 3 albino in family of four and how?
|
|
Compute the p-value for the hypothesis test you set up
: Compute the p-value for the hypothesis test you set up in part a. (2) Use the p-value to carry out the test by setting a equal to .10, .05, and .001.
|
|
Formulate the null and alternative hypotheses needed
: Formulate the null and alternative hypotheses needed to attempt to provide evidence that the new system has reduced the noncompletion percentage.
|
|
Use critical values and a p-value to perform hypothesis test
: Formulate the null and alternative hypotheses needed to attempt to provide evidence. Use critical values and a p-value to perform the hypothesis test by setting a equal to .10, .05, .01, and .001.
|