On average, the _ the between- groups variability, the more likely we are to retain the...
On average, the _ the between- groups variability, the more likely we are to retain the null hypothesis. A. Larger B. smaler
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On average, the smaller the between - groups variability , the more likely we are to retain the null hypothesis.
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On average, the _ the between- groups variability, the
more likely we are to retain the...
If we find a p-value between 0.30 and 0.40, then do we reject or retain the...
If we find a p-value between 0.30 and 0.40, then do we reject or retain the null hypothesis at the 5% significance level? Retain the null hypothesis Reject the null hypothesis Question 23 1 pts We want to compare cholesterol levels between men and women, so we collect a sample of 20 women and 30 men. The group of men in our sample have a mean of 240.0 with standard deviation 35.0, and the women have a mean of 210.0...
In ANOVA, variability between groups reflects _________, whereas variability within groups reflects __________ . total variance;...
In ANOVA, variability between groups reflects _________, whereas variability within groups reflects __________ . total variance; error variance error variance ; total variance random error; a true effect (if one exists) both a true effect (if one exists) and random error; only random error just a true effect (if one exists); random error Rejecting the null hypothesis with the overall or omnibus One-way Analysis of Variance indicates that the: mean of one sample differs significantly from the mean of at...
Find the critical F-value for a one-way ANOVA given: α = 0.01 dfb = 30 dfw...
Find the critical F-value for a one-way ANOVA given: α = 0.01 dfb = 30 dfw = 14 a. 2.72 b. 3.34 c. 4.21 d. 1.98 e. 3.00 In which direction is the F distribution skewed? a. Positively skewed b. Negatively skewed c. No skew If our calculated F is LARGER than our identified critical value from the F-table, what decision would we make about the null hypothesis? a. Reject the null hypothesis b. Fail to reject (i.e., retain) the...
26. ____ In analysis of variance, observed mean differences appear, somewhat disguised, as variability a) between...
26. ____ In analysis of variance, observed mean differences appear, somewhat disguised, as variability a) between groups b) between subjects c) within groups d) within subjects 27. ____ When all possible difference between pairs of population means are evaluated not with F test, but a series of regular t tests, the probability of a a) type I error is larger than the level of significance b) type I error is smaller than the level of significance c) type II error...
Question 34 2 pts variability may also be thought of as Within-groups; 'error Between-groups; 'significant' Between-groups;...
Question 34 2 pts variability may also be thought of as Within-groups; 'error Between-groups; 'significant' Between-groups; 'error' Within-groups: 'effect'
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...
Biostats. Please help! Thank you!!! 1. If a published paper reports that their F-test results have...
Biostats. Please help! Thank you!!!
1. If a published paper reports that their F-test results have an associated p value <0.01, you could conclude that the test result is: a) rare (strong), supporting the null hypothesis b) rare (strong), supporting the research (alternate) hypothesis c) common, supporting the null hypothesis d) common, supporting the research hypothesis e) none of the above 2. The more that the variability groups exceeds the variability groups, the more suspect the null hypothesis. a) between;...
1) Which type of error is more likely to be made if it is difficult to...
1) Which type of error is more likely to be made if it is difficult to perform sampling and there is high population variance? Select one: a. Type I error b. Type II error c. Type III error d. a and b, but not c e. a, b and c 2) Pearson's r is suitable to measure the linear relationship between two __________ level variables. Select one: a. interval/ratio b. ratio but not interval c. interval but not ratio d....
Select the true statement regarding the F-statistic of an ANOVA test. a.) The larger the F value,...
Select the true statement regarding the F-statistic of an ANOVA test. a.) The larger the F value, the more likely it is to reject the null hypothesis b.) The smaller the F value, the more likely it is to reject the null hypothesis. c.) The smaller the F value, the greater the variation between individual samples. d.) The larger the F value, the more likely it is to fail to reject the null hypothesis.
If between-groups variance is large, then we have observed a) experimenter effects. b) large systematic variance....
If between-groups variance is large, then we have observed a) experimenter effects. b) large systematic variance. c) large differences due to confounds. d) possibly both large systematic variance and large differences due to confounds. QUESTION 3 The larger the F-ratio, the greater the chance that a) a mistake has been made in the computation. b) there are large systematic effects present. c) the experimental manipulation probably did not have the predicted effects. d) the between-groups variation is no larger than...
If we find a p-value between 0.30 and 0.40, then do we reject or retain the null hypothesis at the 5% significance level? Retain the null hypothesis Reject the null hypothesis Question 23 1 pts We want to compare cholesterol levels between men and women, so we collect a sample of 20 women and 30 men. The group of men in our sample have a mean of 240.0 with standard deviation 35.0, and the women have a mean of 210.0...
Question 34 2 pts variability may also be thought of as Within-groups; 'error Between-groups; 'significant' Between-groups; 'error' Within-groups: 'effect'
Biostats. Please help! Thank you!!!
1. If a published paper reports that their F-test results have an associated p value <0.01, you could conclude that the test result is: a) rare (strong), supporting the null hypothesis b) rare (strong), supporting the research (alternate) hypothesis c) common, supporting the null hypothesis d) common, supporting the research hypothesis e) none of the above 2. The more that the variability groups exceeds the variability groups, the more suspect the null hypothesis. a) between;...
Select the true statement regarding the F-statistic of an ANOVA test. a.) The larger the F value, the more likely it is to reject the null hypothesis b.) The smaller the F value, the more likely it is to reject the null hypothesis. c.) The smaller the F value, the greater the variation between individual samples. d.) The larger the F value, the more likely it is to fail to reject the null hypothesis.
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