A researcher runs a one-sample, one-sided t-test, and finds that t = 1.93, df = 21, α = .05, where:
H 0: μ = 12
H 1: μ > 12
What decision should be made regarding the hypothesis?
-Reject the null hypothesis.
-Reject the alternative hypothesis.
-Fail to reject the null hypothesis.
-Fail to reject the alternative hypothesis.
A researcher runs a one-sample, one-sided t-test, and finds that t = 1.93, df = 21,...
A researcher in interested in whether students who are musicians have higher intelligence test scores than students in the general population. The mean for the general population is 100. The researcher selects musicians from local high schools and gives them an intelligence test, with a mean of 105. SS 725 for the 2. 30 sample Null Hypothesis (Ho): μ State in words: Alternative Hypothesis (Ha): μ > State in words: df= t critical value (with α : .05): One-tailed or...
The one-sample t statistic from a sample of n = 21 observations for the two-sided test of H0: μ = 60, Ha: μ ≠ 60 has the value t = –1.98. Based on this information: we would reject the null hypothesis at α = 0.05. All of the answers are correct. 0.025 < P-value < 0.05. we would reject the null hypothesis at α = 0.10
You're running a one-sample t-test comparing your sample (? = 30.5, ?? = 1.2) of 21 observations with a population that has μ = 29.6 at ? = 0.01. Calculate ?_???_____ , your confidence interval:_____ to________ , and your decision regarding the null hypothesis (reject/fail to reject):______
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....
Question 21 If the p-value of a left sided test is 0.03, what would be the decision at a 5 % level of signficance ? None of the above Reject the alternative hypothesis Reject the null hypothesis Fail to reject the null hypothesis
You're running a one-sample t-test comparing your sample (? = 38.4, ?? = 4.6) of 27 observations with a population that has μ = 39.7 at ? = 0.001. Calculate ?_??? ________ , your confidence interval: ______ to ______ , and your decision regarding the null hypothesis (reject/fail to reject):__________
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
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...
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...
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....