In a poll, the president's approval rating stood at 58 % in a daily tracking poll of 1400 randomly surveyed adults(a) Make a 90 % confidence interval for the president's approval rating by all adults.(give answers with 4 decimals, e.g: 0.1234)CI=((b) Based on the confidence interval, we want to run a test with the null hypothesis that the president's approval rating was essentially the same as their approval rating of 53 % when elected to their secondterm.1. What type of test is it?II. State the null hypothesis:and the alternative hypothesis:III. use statCrunch to run the Test and fill in the table: (give answers with 4 decimals when necessary, e.g: 0.1234)CountTotalSample Prop.PProportionState the conclusion: the p-value isThe popularity hasso wesince the election.the null hypothesis.Std. Err.Z-StatP-value

The question is about confidence interval and hypo. testing Given : Randomly selected no. of adults…

Answered: In a poll, the president's approval…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Help me please
A recent study of 1000 high school juniors and seniors asked whether or not they felt smartphones are a valuable learning tool. Additional data were gathered on their smartphone plan (unlimited data, additional texting, or standard voice plan) and which class they were in (junior vs. senior). Which of the following is a correct pair of hypotheses the researchers could test? (A) Ho: The proportion of juniors and seniors who feel smartphones are a valuable learning tool is the same for students that have each type of plan. Ha: The proportion of juniors and seniors who feel smartphones are a valuable learning tool is not the same for students that have each type of plan (B) Ho: The proportion of students who feel smartphones are a valuable learning tool is the same for students that have each type of plan. Ha: The proportion of students who feel smartphones are a valuable learning tool is not the same for students that have each type of plan. (C) Ho: There is an association between class…
1
8
A random sample of 500 patients with diabetes were weighed before and after switching to a new drug and the change in their weight is computed for each patient. The resulting 90% confidence interval for the average change in the weight of diabetes patients is (1, 5) expressed in pounds. Which of the following can be the 95% confidence interval generated from the same data?
In clinical trials of the allergy medicine Clarinex (5 mg) and a placebo group subjects reported whether they experienced dry mouth as a possible side effect of their respective treatments. The results of a 95% confidence interval for the proportion of Clarinex users who experienced dry mouth minus the proportion of placebo takers who experienced dry mouth are: (-0.0009, 0.0220). If a hypothesis test were performed, what would you expect the results to be and explain your reasoning.
The correlation coefficient r is a sample statistic. What does it tell us about the value of the population correlation coefficient ? (Greek letter rho)? You do not know how to build the formal structure of hypothesis tests of ? yet. However, there is a quick way to determine if the sample evidence based on ? is strong enough to conclude that there is some population correlation between the variables. In other words, we can use the value of r to determine if ? ≠ 0. We do this by comparing the value |r| to an entry in the correlation table. The value of ? in the table gives us the probability of concluding that ? ≠ 0 when, in fact, ? = 0 and there is no population correlation. We have two choices for ?: ? = 0.05 or ? = 0.01.
How would i find: the 90% confidence interval is enter your response here <(p1−p2)< enter your response here.
A random sample of 250 SCC students yields 79 full-timers and 171 part-timers. (a)Construct a 90% confidence interval for the overall proportion of full-time students at SCC.(b)The margin of error associated with the above c.i. is_____(c)How large a sample should be selected if we want the margin of error to be 2 percentage points?
In a recent poll, 300 people were randomly sampled, and 90% said they liked dogs. Use the Theory-Based Inference applet to find a 95% confidence interval for the true population proportion of people who like dogs, T. (a) We are 95% confident that the proportion of all people who like dogs is between 9 % and % Give your percentage answers rounded to one decimal place. For example, if the applet gives (0.34218, 0.61352) then you would enter 34.2 and 61.4. (b) The sample statistic is 0.9 Give your answer as a dEnter an integer or decimal number [more.Jo not round. (c) The margin of error is 0.024 Give your answer as a decimal using your answers form parts (a) and (b). (d) The confidence interval from part (c) can be written as ± Give your answers as decimals (NOT percentages), and do not round.
6

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

Elementary Statistics: Picturing the World (7th E…

Statistics

ISBN:

9780134683416

Author:

Ron Larson, Betsy Farber

Publisher:

PEARSON

The Basic Practice of Statistics

Statistics

ISBN:

9781319042578

Author:

David S. Moore, William I. Notz, Michael A. Fligner

Publisher:

W. H. Freeman

Introduction to the Practice of Statistics

Statistics

ISBN:

9781319013387

Author:

David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:

W. H. Freeman

SEE MORE TEXTBOOKS