Researchers intend to test whether evaluations of learning sources given by students match the theoreticaldistribution. A categorical variable, X, is measured in the FIVE-point scale. The observed frequenciesobtained after having n = 1000 responses processed are shown in the table below along with hypotheticalprobabilities.Excellent Very GoodGoodFairРorTotalObserved1321401216344500Proportions0.300.250.200.150.101Expected0.05, do you have sufficient evidence that the TRUE DISTRIBUTION ofAt the significance level, a =students' preferences DIFFERS from what was stated by the null hypothesis?• Find EXPECTED CO UNTS and place them in the table above.• Evaluate the goodness-of-fit test statistic• Determine CRITICAL VALUE (or VALUES) required for this procedure• State Rejection Rule and then formulate your DECISIONSolution

The study is about to test whether evaluation of learning sources given by students match the…

Answered: Researchers intend to test whether…

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

Repairs: A sample of six records for repairs of a component showed the following costs: 95, 87, 20, 75, 90, 96. Construct a 90% confidence interval for the mean cost of a repair for this type of component. Use tables and technology. Round your answers to at least one decimal place.
3. Research Problem Job satisfaction as a function of work schedule waS investigated in two different factories. In the first factory the employees are on a fixed shift system while in the second factory the workers have a rotating shift system. Under the fixed shift system, a worker ahways works the same shift, while under the rotating shift system, 8 worker rotates through the three shifts. Using the scores below determine if there is a significant difference in job satisfaction between the two groups of workers. Work Satisfaction Scores for Two Groups of Workers Rotating Shift 63 71 48 57 53 48 57 76 52 68 Fixed Shift 79 83 68 59 81 76 80 74 58 49 68 Carry out an sppropriate statistical analysis using alpha=D0.001 and complete the table: Rotating Shift Fixed Shift t Stat P(T<-1) two-tal t Critical two-tail d) What is the probability value for the null hypothesis being correct? e) What is the alternative hypothesis f What is your conclusion with two reasons? g) Which shift is better…
In studying the responses to questions on a multiple-choice test, the following sample data are obtained. At the a 0.05 significance level, test the claim that the responses occur with the same frequency. Ho: The responses to the questions occur with the same frequency. H₁: The responses to the questions do not occur with the same frequency. Observed Response Frequency Expected Frequency (0-E)2 E A 6 16.2 8 B 10 16.2 C 24 16.2 D 18 16.2 8 E 23 16.2 a. What is the X2 test-statistic for this data? Round to four decimal places. x²= b. What is the p-value? Round to four decimal places. p-value= c. What would be the conclusion of this hypothesis test? O Fail to reject the hull hypothesis. Reject the null hypothesis. d. What is the final conclusion? O There is sufficient evidence to conclude the test question responses occur with the same frequency. There is sufficient evidence to conclude the test question responses do not occur with the same frequency. O There is not sufficient evidence to…
Example: Assume that adults were randomly selected for a poll. They were asked if they "favor or oppose using federal tax dollars to fund medical research using stem cells obtained from human embryos.” Of those polled, 480 were in favor and 394 were opposed. A politician claims that people don’t really understand the stem cell issue and their responses to such questions are random responses equivalent to a coin toss. Use a 0.01 significance level to test the claim that the proportion of subjects who respond in favor is equal to 0.5. What does the result suggest about the politician’s claim? Following the hypothesis test steps, let’s first identify the claim and the null and alternative hypotheses: For this example, the original claim is that the proportion of the subjects who responded in favor is equal to 0.5 (half – since the politician compared their responses as equivalent to a coin toss). The symbolic form of the politician’s claim can be expressed as p = 0.5. Also notice…
Asap plz handwritten solution acceptable
a,b,c
A researcher is interested in investigating whether religious affiliation and the brand of sneakers that people wear are associated. The table below shows the results of a survey. Frequencies of Religions and Sneakers Other Nike Adidas Protestant 95 83 100 Catholic 68 69 93 Jewish 15 23 26 Other 76 81 94 What can be concluded at the a = 0.10 significance level? a. What is the correct statistical test to use? Independence Homogeneity Goodness-of-Fit Paired t-test b. What are the null and alternative hypotheses? Но: Sneaker brand and religious affiliation are dependent. The distribution of sneaker brand is not the same for each religion. Sneaker brand and religious affiliation are independent. The distribution of sneaker brand is the same for each religion. H1: Sneaker brand and religious affiliation are independent. The distribution of sneaker brand is the same for each religion. The distribution of sneaker brand is not the same for each religion. O Sneaker brand and religious…
Maps YouTube PeopleForms Contr... → Morning Song by S... e Morning Song The... How smallpox deva... G Atzec cared about s... Test the claim that the mean GPA of night students is larger than 2.7 at the 0.005 significance level. The null and alternative hypothesis would be: Ho:p> 2.7 Ho: p=0.675 Ho: p 0.675 Ho: 0.675 H₁: p2.7 H₁: 2.7 O of O O O The test is: two-tailed left-tailed right-tailed O Based on a sample of 55 people, the sample mean GPA was 2.73 with a standard deviation of 0.02 The p-value is: Based on this we: O Reject the null hypothesis Fail to reject the null hypothesis Question Help: Video Post to forum Submit Question (to 2 decimals)
Start of Questions The work week for adults in the US that work full time is normally distributed with a mean of 47 hours. A newly hired engineer at a start-up company believes that employees at start-up companies work more on average then most working adults in the US. She asks 12 engineering friends at start-ups for the lengths in hours of their work week. Their responses are shown in the table below. Test the claim using a 10% level of significance. Give answer to at least 4 decimal places.Note: You will have to copy and paste (or type) this data into Statcrunch and ask it to calcualte the sample mean and standard deviation. Hours 49 50 60 54 49 67 47 50 50 46 52 50 What are the correct hypotheses? H0: Select an answer σ² p s x̄ μ s² σ p̂ ? = ≠ ≥ > < ≤ hours H1: Select an answer s² μ s σ² x̂ p p̂ σ ? ≠ < ≤ > = ≥ hours Based on the hypotheses, find the following: Test Statistic= p-value= The correct decision is to Select an…
A political scientist claims that 38% of first-year college students characterize themselves as being “moderate” or “middle of the road” as far as their political affiliation is concerned. Believing this claimed value is too high, you survey a random sample of 400 first-year college students and find that 120 characterize themselves as being “moderate” or “middle of the road.” Based on this information, what will the test statistic be? Choose the answer below that is closest to what you calculate, and try not to do a lot of rounding until you get to the very end of your calculations. 1. -0.3 2. -1.2 3. -2.6 4. -3.3 5. None of the other answer options are correct because the test statistic should be positive, not negative.
In Bayesian statistics, a 90% credible interval (or Bayes interval) covers the true parameter with (subjective) probability 90%. True False
The table below includes results from polygraph (lie detector) experiments conducted by researchers. In each case, it was known if the subjected lied or did not lie, so the table indicates when the polygraph test was correct. Use a 0.05 significance level to test the claim that whether a subject lies is independent of the polygraph test indication. Do the results suggest that polygraphs are effective in distinguishing between truth and lies? Determine the test statistic. (Round ofd to 3 decimal places) Find the P-Value What is the conclusion? (In case you are using excel, I will appreciate if you explain the steps of finding the test statistic and the P-value....But this is not a must)

SEE MORE QUESTIONS

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