Homework Answers
Q21. Different test to each group.
Answer: one-way ANOVA
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Q22. Answer: the results were too unlikely to have occurred by chance if the null hypothesis is true.
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Q23. Answer: the variability calculated for the scores within each group separately
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Q24. Answer: the phi coefficient
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Question 21 You wish to co participants and administer a different test to each group. Which...
Consider the following scenario. You conduct a RCBD ANOVA test and calculate a test statistic of...
Consider the following scenario. You conduct a RCBD ANOVA test and calculate a test statistic of 3.48 for your primary research question. You had 6 different treatment groups, and 5 levels of your blocking variable. What would be the most correct conclusion to come to using a significance level of 5%? O A. Reject the null hypothesis since the p value is greater than 0.05 and conclude that at least one of the treatment group means are different to the...
Question 2 1 pts In an ANOVA test comparing several population means, if the alternative hypothesis...
Question 2 1 pts In an ANOVA test comparing several population means, if the alternative hypothesis is true, the F statistic tends to be close to zero. True False Question 3 1 pts If the two variables in a two-way table are not associated, the conditional distributions in the table are similar to each other. O True False Question 4 1 pts In a multiple regression model, if the P-value associated with the F test is less than the significance...
please answer correctly and answer all question.. this is revision question.. thanks.. 21. Which of the...
please answer correctly and answer all question..
this is revision question.. thanks..
21. Which of the following is FALSE regarding ANOVA test? A. The Kruskal-Wallis test is the non-parametric equivalent for one-way ANOVA test B. The independent variable in one-way ANOVA test should be a categorical variable The dependent variable in one-way ANOVA test should be a numerical variable (D.Doe-way ANOVA test cannot be applied to compare two means (comparison of two groups) 22. Which of the following is FALSE...
A market research firm wants to pilot test children’s toys in stores. They collect data on...
A market research firm wants to pilot test children’s toys in stores. They collect data on attitude ratings (higher scores reflect more liking) for three different toys and find the following results: Legos (M = 5.5; N = 10), a football (M = 4.5; N = 10), and a NERF gun (M = 6.0; N = 10). They also calculated the between-group and within-group sum of squares (SSB = 262.2; SSW =1220.4). Use a one-way ANOVA (where α = .05)...
1. You decide to test different samples for musical preferences: Baby Boomers, generation X and generation...
1. You decide to test different samples for musical preferences: Baby Boomers, generation X and generation Z. Which type of inferential method, or case, is most appropriate for this scenario? A. ANOVA B. Independent samples C. Matched pairs 2.You have been asked to study the driving habits of marital couples; those living in the same household as a married couple. You want to measure the speed of spouse 1 and the speed of spouse 2 with the same vehicle. You...
i need help with this question, please show work by hand no excel, spss thank you ! Assume you're using an alpha of 05, and a two-tailed test, to make your decision about whether to reject...
i
need help with this question, please show work by hand no excel,
spss thank you !
Assume you're using an alpha of 05, and a two-tailed test, to make your decision about whether to reject the null hypothesis. Assume that 18 subjects received one of three treatments and produced the data reported in Data Set B. Conduct a one-way ANOVA to see if the means of the three treatments are different on a statistically significant level. Complete an ANOVA...
QUESTION 11 For each of the examples below decide which statistical test should be used to...
QUESTION 11 For each of the examples below decide which statistical test should be used to analyze the data. You want to test the effect of one IV on a DV with three levels with different A. Z-test participants receiving each of the levels B. Pearson Correlation You want to compare a sample with a population, but don't know all of the population parameters C. Single sample t-test One group of participants took medicine, another group took a placebo pil...
Please answer all 9 questions Question 1 (6 points) Two college instructors are interested in whether...
Please answer all 9
questions
Question 1 (6 points) Two college instructors are interested in whether or not there is any variation in the way they grade math exams. They each grade the same set of 10 exams. The first instructor's grades have a variance of 59.2. The second instructor's grades have a variance of 72.5. Test the claim that the first instructor's variance is smaller. (In most colleges, it is desirable for the variances of exam grades to be...
D Question 6 5 pts What model would you use in a hypothesis test the difference...
D Question 6 5 pts What model would you use in a hypothesis test the difference between two means? O t O Chi square OF D l Question 7 5 pts Suppose a glass factor samples 2000 glasses. There are flaws in 75 of them. Find a 95% confidence interval for the true proportion of flaws. O (033,.041) O (0,.0375) O (0356.0393) O (029,.046) Question 8 If the estimated mean from sample is 10, then O is equivalent to the...
4 questions i need all answered please! thank you!! Brad J. Bushman, a psychologist at Ohio...
4 questions i need all answered please! thank you!!
Brad J. Bushman, a psychologist at Ohio State University, studied the impact of watching violence on memory. For example, he found that watching violent television programs impairs a person's ability to remember the details of commercials. You decide to explore this issue by having three different groups try recalling details from a commercial played while watching videos. The first group watched violent videos, the second group watched sexual videos, antd the...
Consider the following scenario. You conduct a RCBD ANOVA test and calculate a test statistic of 3.48 for your primary research question. You had 6 different treatment groups, and 5 levels of your blocking variable. What would be the most correct conclusion to come to using a significance level of 5%? O A. Reject the null hypothesis since the p value is greater than 0.05 and conclude that at least one of the treatment group means are different to the...
Question 2 1 pts In an ANOVA test comparing several population means, if the alternative hypothesis is true, the F statistic tends to be close to zero. True False Question 3 1 pts If the two variables in a two-way table are not associated, the conditional distributions in the table are similar to each other. O True False Question 4 1 pts In a multiple regression model, if the P-value associated with the F test is less than the significance...
please answer correctly and answer all question..
this is revision question.. thanks..
21. Which of the following is FALSE regarding ANOVA test? A. The Kruskal-Wallis test is the non-parametric equivalent for one-way ANOVA test B. The independent variable in one-way ANOVA test should be a categorical variable The dependent variable in one-way ANOVA test should be a numerical variable (D.Doe-way ANOVA test cannot be applied to compare two means (comparison of two groups) 22. Which of the following is FALSE...
i
need help with this question, please show work by hand no excel,
spss thank you !
Assume you're using an alpha of 05, and a two-tailed test, to make your decision about whether to reject the null hypothesis. Assume that 18 subjects received one of three treatments and produced the data reported in Data Set B. Conduct a one-way ANOVA to see if the means of the three treatments are different on a statistically significant level. Complete an ANOVA...
QUESTION 11 For each of the examples below decide which statistical test should be used to analyze the data. You want to test the effect of one IV on a DV with three levels with different A. Z-test participants receiving each of the levels B. Pearson Correlation You want to compare a sample with a population, but don't know all of the population parameters C. Single sample t-test One group of participants took medicine, another group took a placebo pil...
Please answer all 9
questions
Question 1 (6 points) Two college instructors are interested in whether or not there is any variation in the way they grade math exams. They each grade the same set of 10 exams. The first instructor's grades have a variance of 59.2. The second instructor's grades have a variance of 72.5. Test the claim that the first instructor's variance is smaller. (In most colleges, it is desirable for the variances of exam grades to be...
D Question 6 5 pts What model would you use in a hypothesis test the difference between two means? O t O Chi square OF D l Question 7 5 pts Suppose a glass factor samples 2000 glasses. There are flaws in 75 of them. Find a 95% confidence interval for the true proportion of flaws. O (033,.041) O (0,.0375) O (0356.0393) O (029,.046) Question 8 If the estimated mean from sample is 10, then O is equivalent to the...
4 questions i need all answered please! thank you!!
Brad J. Bushman, a psychologist at Ohio State University, studied the impact of watching violence on memory. For example, he found that watching violent television programs impairs a person's ability to remember the details of commercials. You decide to explore this issue by having three different groups try recalling details from a commercial played while watching videos. The first group watched violent videos, the second group watched sexual videos, antd the...
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