Disadvantages of non-parametric tests include:
a. |
For hypothesis testing not estimating effect size |
|
b. |
Degree of confidence may be too high |
|
c. |
May lack power (compared to parametric tests) |
|
d. |
A & C |
Disadvantages of non-parametric tests include: a. For hypothesis testing not estimating effect size b. Degree of...
Disadvantages of non-parametric tests include: a. For hypothesis testing not estimating effect size b. Degree of confidence may be too high c. May lack power (compared to parametric tests) d. A & C
Estimating effect size. Peng and Chen (2014) evaluated effect size estimates for various tests. In their paper, they stated that “The [two] popular effect size indices were found to be . . . Cohen’s d, and η2” (p. 43). Which effect size measure is reported with an ANOVA?
Non-parametric tests help to safeguard against making inaccurate conclusions because they are: a. More conservative b. Less conservative c. Descriptive d. Qualitative
1. In hypothesis testing, the hypothesis that is assumed to be true for the purpose of testing is called the hypothesis 2. (Circle the correct response) In hypothesis testing, critical values used to make a rejection decision regarding the null hypothesis are determined by the nature of the hypothesis test (two-tail vs. one-tail) and the d. significance level a. sample size b. population parameter c. target value 3. (Circle the correct response) In the process of hypothesis testing, the test...
Like estimation procedures, hypothesis testing involves the risk that the sample a. may not be representative. b. may not be biased. c. may be too large. d. may not be significant.
Tests of the b = 0 hypothesis are: Select one: a. tests for the share of dependent variable variation explained by the regression model. b. one-tail t tests. c. two-tail t tests d. tests of direction or comparative magnitude. The demand for most consumer goods is insensitive to changes in: Select one: a. competitor prices. b. the weather. c. advertising. d. the corporate income tax rate. The long-run effect on demand of competitor product-development strategies is: Select one: a. less...
(1 point) In 2002 the Supreme Court ruled that schools could require random drug tests of students participating in competitive after-school activities such as athletics. Does drug testing reduce use of illegal drugs? A study compared two similar high schools in Oregon. Wahtonka High School tested athletes at random and Warrenton High School did not. In a confidential survey, 8 of 110 athletes at Wahtonka and 29 of 102 athletes at Warrenton said they were using drugs. Regard these athletes...
Problem 4: One Sample T-Tests. For the following investigations, include all Steps of Hypothesis Testing Investigation A: A university wants to see if their statistics lab instructors receive student ratings that are higher than the population mean of 5.0. For a sample of 30 statistics lab instructors from that university. M= 5.3 and S- i. Conduct the appropriate statistical test using α-05 Investigation B. A researcher wants to see if children with autism are different than the population mean of...
Activity 9: Required sample sizes for hypothesis tests Sample size determination is the act of choosing the number of observations or replicates to include in a statistical sample 12,8/0 Example: A high-tech company wants to estimate the mean number of years of college education its employees have completed. A good estimate of the standard deviation for the number of years of college is 144. How large a sample needs to be taken to estimate u to within 0.5 of a...
A. B. C. D. Construct a confidence interval suitable for testing claim that students taking non proctored tests get higher mean score than those taking proctored tests. ___<µ1 - µ2 < ____ Yes/No____ because the confidence interval contains only positive values/only negative values/zero ______. E. Construct a confidence interval suitable for testing claim that students taking non proctored tests get higher mean score than those taking proctored tests. ___<µ1 - µ2 < ____ Yes/No____ because the confidence interval contains only...