What are the primary statistical values in research which could be used to reject or retain a null hypothesis?
What are the primary statistical values in research which could be used to reject or retain...
State the decision to retain or reject the null hypothesis for each of the following F-tests at a 0.05 level of significance. (a) F(3, 28) = 3.37 Retain the null hypothesis. Reject the null hypothesis. (b) F(2, 33) = 3.09 Retain the null hypothesis. Reject the null hypothesis. (c) F(1, 120) = 4.07 Retain the null hypothesis. Reject the null hypothesis. (d) F(2, 60) = 3.11 Retain the null hypothesis. Reject the null hypothesis.
Confidence intervals indicate the confidence level used to reject the null hypothesis the range of values included in the sample a range of values that could contain the population mean the range of values that could equal the sample’s actual mean
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...
If we reject the null hypothesis, we conclude that: there is enough statistical evidence to infer that the alternative hypothesis is true. there is not enough statistical evidence to infer that the alternative hypothesis is true. there is enough statistical evidence to infer that the null hypothesis is true. there is not enough statistical evidence to infer that the null hypothesis is true.
Castaneda v. Partida is an important court case in which statistical methods were used as part of a legal argument. When reviewing this case, the Supreme Court used the phrase "two or three standard deviations" as a criterion for statistical significance. This Supreme Court review has served as the basis for many subsequent applications of statistical methods in legal settings. (The two or three standard deviations referred to by the Court are values of the z statistic and correspond to...
Castaneda v. Partida is an important court case in which statistical methods were used as part of a legal argument. When reviewing this case, the Supreme Court used the phrase "two or three standard deviations" as a criterion for statistical significance. This Supreme Court review has served as the basis for many subsequent applications of statistical methods in legal settings. (The two or three standard deviations referred to by the Court are values of the z statistic and correspond to...
The probability that a statistical test will reject the null when the null is actually false is known as: a) Power b) Confidence c) Hypothesis testing
What is the decision at a 0.05 level of significance for each of the following tests? Hint: Find the critical value for each test; then make a decision. (Round your critical values to two decimal places.) Part (a) F(3, 25) = 3.07 Fcrit = Retain the null hypothesis or Reject the null hypothesis. Part (b) F(5, 21) = 2.53 Fcrit = Retain the null hypothesis or Reject the null hypothesis. Part (c) F(4, 33) = 2.75 Fcrit = Retain the...
What is the decision at a 0.05 level of significance for each of the following tests? Hint: Find the critical value for each test; then make a decision. (Round your critical values to two decimal places.) Part (a) F(3, 29) = 3.02 Fcrit = Retain the null hypothesis. Reject the null hypothesis. Part (b) F(5, 19) = 2.53 Fcrit = Retain the null hypothesis. Reject the null hypothesis. Part (c) F(4, 33) = 2.73 Fcrit = Retain the null hypothesis....
Given critical z values of ±1.96 and an observed z value of -2.40, the appropriate decision is to: a. neither retain nor reject, but conduct another investigation b. neither retain nor reject, but increase the size of the sample c. retain the null hypothesis d. reject the null hypothesis