A sample of n = 25 scores produces a t statistic of t = 2.062. If...
A sample of n = 25 scores produces a t statistic of t = 2.062. If the researcher is using a two-tailed test, which of the following is the correct statistical decision
The researcher can reject the null hypothesis with = .05 but not with = .01
The researcher can reject the null hypothesis with either = .05 or = .01
The researcher must fail to reject the null hypothesis with either = .05 or = .01
It is impossible to make a decision about H0 without more information
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A sample of n = 25 scores produces a t statistic of t = 2.062.
If...
Question 3 5 pts A researcher selects a sample from a population with a mean of...
Question 3 5 pts A researcher selects a sample from a population with a mean of u= 40 and administers a treatment to the individuals in the sample. If the treatment is expected to decrease scores, which of the following is the correct statement of the null hypothesis for a one-tailed test? The researcher can reject the null hypothesis with a = .05 but not with a = .01. The researcher can reject the null hypothesis with either a =...
Multiple Choice: Question #1 A two tailed hypothesis test is being used to evaluate a treatment...
Multiple Choice: Question #1 A two tailed hypothesis test is being used to evaluate a treatment effect with ( a = .05). if the sample data produce a Z-score of ( z= -2.24), what is the correct decision? A. Reject the null hypothesis and conclude that the treatment has no effect B. Reject the null hypothesis and conclude that the treatment has an effect C. Fail to reject the null Hypothesis and conclude that the treatment has no effect D....
A researcher conducts a hypothesis test to evaluate the effect of a treatment. The hypothesis test...
A researcher conducts a hypothesis test to evaluate the effect of a treatment. The hypothesis test produces a z-score of z = -2.60. Assuming that the researcher is using a two-tailed test, what is the correct statistical decision? Reject the null hypothesis with α = .05 but not with α = .01. Reject the null hypothesis with either α = .05 or α = .01. Fail to reject the null hypothesis with either α = .05 or α = .01....
A researcher obtains t = 2.25 for a repeated-measures study using a sample of n =...
A researcher obtains t = 2.25 for a repeated-measures study using a sample of n = 10 participants. Based on this t value, what is the correct decision for a two-tailed test? Reject the null hypothesis with a -.05 Reject the null hypothesis with a -01 Fail to reject the null hypothesis with a - .05 Cannot determine without additional information
Question 86 Not yet answered For an independent-measures ANOVA comparing three treatments with a sample of...
Question 86 Not yet answered For an independent-measures ANOVA comparing three treatments with a sample of n the critical value for the F-ratio using a = .05? 5 in each treatment, what is Points out of 100 P Flag Question Select one: O a. 3.74 b. 3.34 O c. 3.49 d. 3.88 Question 87 Not yet answered Determining the class standing (1st, 2nd, and so on) for the graduating seniors at a high school would involve measurement on a(n) —...
1) Select the answer with the correct choices for scenarios A and B regarding the null...
1) Select the answer with the correct choices for scenarios A and B regarding the null hypothesis (H0). Scenario A - If we have chosen an alpha (α) of .05 for a two tailed test and our Z obtained is 1.70, what decision do we make regarding the null hypothesis (H0)? Scenario B - If we have chosen an alpha (α) of .01 for a left tailed test and our Z obtained is -2.24, what decision do we make regarding...
please explain how to do this because i dont get it thank you A researcher uses...
please explain how to do this because i dont get it thank you
A researcher uses two samples, each with n = 15 participants, to evaluate the mean difference in performance scores between 8-year-old and 10-year-old children. The prediction is that the older children will have higher scores. The sample mean for the older children is five points higher than the mean for the younger children and the pooled variance for the two samples is 30. For a one- tailed...
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...
An independent-measures research study uses two samples, each with n = 10 participants. If the data...
An independent-measures research study uses two samples, each with n = 10 participants. If the data produce at statistic of t = 2.095, which of the following is the correct decision for a two-tailed hypothesis test? Reject the null hypothesis with a = .05 Reject the null hypothesis with a - .01 O Fail to reject the null hypothesis with a - .05 Cannot answer
Two samples, each with n = 11, produce an independent-measures t statistic of t = -2.78....
Two samples, each with n = 11, produce an independent-measures t statistic of t = -2.78. Which of the following decisions is justified for a two-tailed hypothesis test with α = .01? Select one: a. Both are correct. b. Fail to reject H0 c. Reject H0 d. There is not information available to answer this question.
Question 3 5 pts A researcher selects a sample from a population with a mean of u= 40 and administers a treatment to the individuals in the sample. If the treatment is expected to decrease scores, which of the following is the correct statement of the null hypothesis for a one-tailed test? The researcher can reject the null hypothesis with a = .05 but not with a = .01. The researcher can reject the null hypothesis with either a =...
A researcher obtains t = 2.25 for a repeated-measures study using a sample of n = 10 participants. Based on this t value, what is the correct decision for a two-tailed test? Reject the null hypothesis with a -.05 Reject the null hypothesis with a -01 Fail to reject the null hypothesis with a - .05 Cannot determine without additional information
Question 86 Not yet answered For an independent-measures ANOVA comparing three treatments with a sample of n the critical value for the F-ratio using a = .05? 5 in each treatment, what is Points out of 100 P Flag Question Select one: O a. 3.74 b. 3.34 O c. 3.49 d. 3.88 Question 87 Not yet answered Determining the class standing (1st, 2nd, and so on) for the graduating seniors at a high school would involve measurement on a(n) —...
please explain how to do this because i dont get it thank you
A researcher uses two samples, each with n = 15 participants, to evaluate the mean difference in performance scores between 8-year-old and 10-year-old children. The prediction is that the older children will have higher scores. The sample mean for the older children is five points higher than the mean for the younger children and the pooled variance for the two samples is 30. For a one- tailed...
An independent-measures research study uses two samples, each with n = 10 participants. If the data produce at statistic of t = 2.095, which of the following is the correct decision for a two-tailed hypothesis test? Reject the null hypothesis with a = .05 Reject the null hypothesis with a - .01 O Fail to reject the null hypothesis with a - .05 Cannot answer
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