Davey, Startup, Zara, MacDonald, and Field (2003) were interested in the role of mood on the degree of compulsive checking in which a person engaged. (Compulsive checking is involved in a number of psychopathologies.) Three groups of 10 participants each listened to music designed to induce positive, negative, or neutral mood. They were then asked to "list as many things around your home that you should check for safety or security reasons before you go away for three weeks." The dependent variable was the number of things listed. The actual data follow. Induced Mood Negative Positive|None 17 19 18 15 12 15 16 17 11 13 13 9 13 10 11 24 14 10 20 15 11 10 14 |10 11 17 17 7 19 15 Run the appropriate analysis of variance and draw vou Own conclusion

Davey, Startup, Zara, MacDonald, and Field (2003) were interested in the role of mood on the degree of compulsive checking in which a person engaged. (Compulsive checking is involved in a number of psychopathologies.) Three groups of 10 participants each listened to music designed to induce positive, negative, or neutral mood. They were then asked to "list as many things around your home that you should check for safety or security reasons before you go away for three weeks." The dependent variable was the number of things listed. The actual data follow. Induced Mood Negative Positive|None 17 19 18 15 12 15 16 17 11 13 13 9 13 10 11 24 14 10 20 15 11 10 14 |10 11 17 17 7 19 15 Run the appropriate analysis of variance and draw vou Own conclusion

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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You accept the alternative hypothesis when you reject the null hypothesis. justify the above statement?
Suppose you wish to find Kby the other cola, and then asked to disclose which drink they prefer. Results of your taste test indicate that 44 of 100 individuals prefer Cola 2. Complete parts a through c out the answer to the age-old question, "Do people prefer Cola 1 or Cola 2?" You conduct a blind taste test in which individuals are randomly asked to drink one of the colas first, followe (a) Conduct a hypothesis test (preferably using technology) Ho: p=Po versus H₁: ppo for p = 0.33, 0.34, 0.35 0.53, 0.54, 0.55 at the a= 0.05 level of significance. For which values of Po do you not reject the null hypothesis? What do each of the values of po represent? Do not reject the null hypothesis for the values of po between and inclusively (Type integers or decimals. Do not round.) (b) Construct a 95% confidence interval for the proportion of individuals who prefer Cola 2 We are 95% confident the proportion of individuals who prefer Cola 2 is between and (Type integers or decimals rounded to…
A researcher selects a sample of 20 participants and makes the decision to fail to reject the null hypothesis. She conducts the same study testing the same hypothesis with a sample of 100 participants and makes the decision to reject the null hypothesis. Give a likely explanation for why the two samples led to different decisions.
If we reject the null hypothesis when testing to see if a certain treatment has an effect, it means the treatment does have an effect. True False
Which of the below-mentioned hypotheses is assumed to be true while we perform a hypothesis test?
4.1
When the null hypothesis is found to be true, the alternative hypothesis must also be true
2. Can hypothesis testing ever prove a hypothesis true? How should we interpret an experiment where we fail to reject the null hypothesis?
When a hypothesis test is being carried out, there are four different situations that can occur depending on the truthfulness of the null hypothesis. Type I error occurs when the following situation happen The null hypothesis is false, but we mistakenly fail to reject it. The null hypothesis is true, but we mistakenly reject it. The null hypothesis is false, and we reject it. The null hypothesis is true, and we fail to reject it.
When the null hypothesis is not rejected, it is O possible a Type I error has occurred. not possible a Type II error has occurred. possible a Type II error has occurred. O possible either a Type I or a Type II error has occurred.
If the conclusion in a hypothesis test is to fail to reject H0H0, we can conclude that there is strong evidence that the null hypothesis is true.
What does the decision to retain null hypothesis implies?