Homework Answers
Q.1 Option d is correct.because it is assumption of one way ANOVA.
Q.2 Option d is correct.because it is assumption of t test.
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4. Which of the following is an assumption of one-way ANOVA comparing samples from three or...
3. When conducting a one-way ANOVA, the the between-treatment variability is when compared to the within-treatment...
3. When conducting a one-way ANOVA, the the between-treatment variability is when compared to the within-treatment variability, the the value of FDATA will be tend to be. a. smaller, larger b. smaller, smaller c. larger, larger d. smaller, more random e. larger, more random 4. Which of the following is an assumption of one-way ANOVA comparing samples from three or more experimental treatments? a. All the response variables within the k populations follow a normal distributions. b. The samples associated...
Please help with the following multiple choice 1. In the one-way ANOVA where there are k...
Please help with the following multiple choice 1. In the one-way ANOVA where there are k treatments and n observations, the degrees of freedom for the F-statistic are equal to, respectively: a. n and k. b. k and n. c. n − k and k − 1. d. k − 1 and n − k. 2. In ANOVA, the F-test is the ratio of two sample variances. In the one-way ANOVA (completely randomized design), the variance used as a numerator...
1. For a one-factor ANOVA comparing the effect of four different treatments on a recovery time...
1. For a one-factor ANOVA comparing the effect of four different treatments on a recovery time from a physical injury, what is stated by the alternative hypothesis (H1)? A. One treatment is significantly more effective in shortening the recovery time. B. There are some significant differences in recovery time after the four treatments. C. All treatments are equally effective in shortening the recovery time. D. There is no significant difference in recovery time after the four treatments. 2.For a one-factor...
In a one-factor ANOVA for independent samples, the mean differences between-groups caused by a treatment effect...
In a one-factor ANOVA for independent samples, the mean differences between-groups caused by a treatment effect contribute to which of the following variances (i.e., Mean Sum of Squares, MS0? A. Both between-treatments variance and within-treatments variance B. Between-treatments variance but not within-treatments variance C. Within-treatments variance but not between-treatments variance D. None of the above.
The following data represent the results from an independent-measures experiment comparing three treatment conditions. Use StatCrunch...
The following data represent the results from an independent-measures experiment comparing three treatment conditions. Use StatCrunch to conduct an analysis of variance with a = 0.05 to determine whether these data are sufficient to conclude that there are significant differences between the treatments. Treatment A Treatment B Treatment C 5 5 12 3 6 6 5 4 10 4 7 9 3 3 8 F-ratio = p-value = Conclusion: There is a significant difference between treatments These data do not...
38-40 please! the end of 38 is “one way ANOVA, t=“ thank you so much in...
38-40 please! the end of 38 is “one way ANOVA, t=“ thank you so
much in advance
parameter is ca y between a sample statistics and its corresponding d) the sampling error 35) Which of the following is the key feature of random assignment? a) All participants have an equal chance of being selected into a study All participants have an equal chance of completing a study b) c) All participants have an equal chance of being placed in any...
Question: 1 Part A: There are several assumptions that are made in the one-way ANOVA model....
Question: 1 Part A: There are several assumptions that are made in the one-way ANOVA model. Which one in the list is NOT one of the assumptions? a. The populations means are all equal if Ho is true. b. The variances within each treatment group are statistically equal. c. The mean of the observations, in at least one treatment group, is statistically significantly different from the mean of the observations in any one of the other treatment groups. d. All...
Answer True or False to the following: - If we were comparing the time it takes...
Answer True or False to the following: - If we were comparing the time it takes for a headache to subside to a certain level for six different dosages of the same medication using a one-way ANOVA procedure, then this problem has six levels and one factor. - In a one-way ANOVA, the entity on which a response variable is measured is called the level unit. - One assumption for the one-way ANOVA procedure is that the samples are independent...
21. In one-factor ANOVA for independent samples, which of the following reflects a random variability of...
21. In one-factor ANOVA for independent samples, which of the following reflects a random variability of scores in the samples? A. MSbetween B. MStotal C. MSwithin D. A & B 22. A one-factor ANOVA is used to evaluate the mean differences in cognitive task performance between three experimental groups, with n = 15 participants in each group. If the computed F = 3.17, which of the following is the correct statistical decision? A. Reject the null hypothesis with either α...
Problem 5. (20 points) We have k independent samples from normal distributions with the same variances. We want to test the global hypothesis that all population means are the same. We decided to byp...
Problem 5. (20 points) We have k independent samples from normal distributions with the same variances. We want to test the global hypothesis that all population means are the same. We decided to bypass the ANOVA step and carry out t-tests to assess the differences between all pairs of means. Find the type I error rate for the global test (at alpha level of 0.05) if we use alpha level of 0.05 for each t-test (this shows why adjustments like...
3. When conducting a one-way ANOVA, the the between-treatment variability is when compared to the within-treatment variability, the the value of FDATA will be tend to be. a. smaller, larger b. smaller, smaller c. larger, larger d. smaller, more random e. larger, more random 4. Which of the following is an assumption of one-way ANOVA comparing samples from three or more experimental treatments? a. All the response variables within the k populations follow a normal distributions. b. The samples associated...
The following data represent the results from an independent-measures experiment comparing three treatment conditions. Use StatCrunch to conduct an analysis of variance with a = 0.05 to determine whether these data are sufficient to conclude that there are significant differences between the treatments. Treatment A Treatment B Treatment C 5 5 12 3 6 6 5 4 10 4 7 9 3 3 8 F-ratio = p-value = Conclusion: There is a significant difference between treatments These data do not...
38-40 please! the end of 38 is “one way ANOVA, t=“ thank you so
much in advance
parameter is ca y between a sample statistics and its corresponding d) the sampling error 35) Which of the following is the key feature of random assignment? a) All participants have an equal chance of being selected into a study All participants have an equal chance of completing a study b) c) All participants have an equal chance of being placed in any...
Problem 5. (20 points) We have k independent samples from normal distributions with the same variances. We want to test the global hypothesis that all population means are the same. We decided to bypass the ANOVA step and carry out t-tests to assess the differences between all pairs of means. Find the type I error rate for the global test (at alpha level of 0.05) if we use alpha level of 0.05 for each t-test (this shows why adjustments like...
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