Can you provide an example of a scenario when a researcher should use a one-tailed test?
One tailed test is used when we want to know the probability of occurence of any event is greater than or less than to a particular value but not both.
For example, let a share X is trading at $100. Then to find the probability that the share price will not cross $110 in next one month would be determined by one tailed test.
u0: Price <=$110
u1: Price >$110
Can you provide an example of a scenario when a researcher should use a one-tailed test?
When a one tailed test is used, the research scenario will probably use words such as.... A) "increase" or "decrease" B) "less" or "more" C) "faster' or "slower" D) "positive" or "negative" E) All of the above
Briefly describe a scenario where it would be appropriate for a researcher to do a one-tailed two independent sample t-test.
Make up an example of a one-tailed test. Draw a curve and shade in the region you are interested in. Make up an example of a two-tailed test. Draw a curve and shade in the region you are interested in. List the four possible outcomes for any hypothesis test. If you are concerned about the Type I Error, how should a proposed hypothesis test be modified? Name three ways power can be enhanced. Using a group of four subjects, an...
A researcher did a one-tailed hypothesis test using an alpha level of .01, H0 was rejected. A colleague analyzed the same data but used a two-tailed test with α=.05, H0 was failed to reject. Can both analyses be correct? Explain your answer.
Describe a scenario where a researcher could use a Goodness of Fit Test to answer a research question. Fully describe the scenario and the variables involved and explain the rationale for your answer. Why is that test appropriate to use? (3 points) Describe a scenario where a researcher could use a Test for Independence to answer a research question. Fully describe the scenario and the variables involved and explain the rationale for your answer. Why is that test appropriate to...
How does a two-tailed test compared to a one-tailed test when given a sample statistic and a fixed alpha level? A. The critical value to be compared to the statistic would be less extreme with a two-tailed test. B. The critical value to be compared to the statistic would be more extreme with a two-tailed test. C. The total significance area in the comparison distribution is larger in a two-tailed test. D. The total significance area in the comparison distribution...
If you have a one-tailed test and the critical value is 1.65, when would you reject the null hypothesis? A. Test statistic is -1.5 B. Test statistic is -2 C. Test statistic is 0 D. Test statistic is 2
A) A one-way ANOVA test: is a left-tailed test is a right-tailed test is a two-tailed test Can be either a right-tailed or a left-tailed test 1.B) The p-value of the ANOVA F test is a. Area below (left) the value of the test statistic of the corresponding F distribution b. Area above (right) the value of the test statistic of the corresponding F distribution c. Half of the area above (right) the value of the test statistic of the corresponding...
Post an example of a scenario that would warrant either a one-sample or a two-sample test. This can be a hypothetical example. Please state H0 and H1 and explain why your hypothetical example qualifies as either a one- or two-sample test. (Please recognize that one- and two-sample tests are not the same as one- or two-tail tests.) Also, clearly state the reason(s) this hypothesis test would be conducted. You do not actually have to complete the hypothesis test steps.
(a) For the same data and null hypothesis, is the P-value of a one-tailed test (right or left) larger or smaller than that of a two-tailed test? pick one The P-value for a one-tailed test is smaller because the two-tailed test includes the area in both tails. The P-value for a one-tailed test is larger because the two-tailed test includes the area in only one tail. The P-value for a one-tailed test is larger because the two-tailed test includes the...