In this study, t=-3.15 describes the mental health variable. Yes it is significant because they are the variable being tested since the p value is 0.002 and the alpha is 0.05, the difference can cause the null hypothesis to be rejected. 3. Is t=-1.99 significant? Provide a rationale for your answer.
In this study, t= -3.15 describes the mental health variable. Yes it is significant because they are the variable being tested since the p value is 0.002 and the alpha is 0.05, the difference can cause the null hypothesis to be rejected. 3. Is t = −1.99 significant? Provide a rationale for your answer.
5. Which groups test scores had the least amount of variability or dispersion? Provide a rationale for your answer. The experimental group’s empowerment posttest had the least amount of variability or dispersion as indicated by the least amount of SD of 7.28. 6.
For what values of t will the null hypothesis not be rejected? a) To the left of -1.645 or to the right of 1.645 b) To the left of -1.345 or to the right of 1.345 c) Between -1.761 and 1.761 d) To the left of -1.282 or to the right of 1.282 2. Which of the following is a characteristic of the F distribution? a) Normally distributed b) Negatively skewed c) Equal to the t-distribution d) Positively skewed Complete Answers here QNT 561 3. For a chi-square test involving a contingency table, suppose the null hypothesis is rejected.
Yes, it is significant because as indicated by the asterisk, p <0.05 is the least acceptable value for statistical significance. 3. Which t ratio listed in Table 3 represents the smallest relative difference between the pretest and 3 months? Is this t ratio statistically significant? What does this result mean?
Although the data are slightly right skewed, because of the large sample size(n=152) our inference on the mean is valid, by the Central Limit Therom. The Box Cox plot suggests a power transformation using a power, p= -0.5 would make the data more shaped like a normal distribution. The Normal Q-Q plot shows the transformed data points lying close to the straight line and the box plot of the transformed data looks symmetric with two outliers. The numerical summary of the transformed data confirms that the transformed data are symmetric (mean=1 and median=1). A Shapiro-Wilk test on the transformed data provides no evidence against the transformed data having come fro a normal distribution (P-value=0.4286).
RES/342--- This produced a 28/30 on the final 1) What are the critical z-values for a two-tailed hypothesis test if the significant level = 0.01? C. ± 2.58 2) In classical hypothesis testing, the test statistic is to the critical value what the __________. A. ‘p-value’ is to alpha 3) For a hypothesis test of a single population mean at 95% confidence level, a calculated Z score of 1.7 supports the conclusion that A. the population mean is greater than the hypothesized value 4) If the paired differences are normal in a test of mean differences, then the distribution used for testing is the C. student distribution 5) One hundred women were polled and 60 reported successfully communicating an automobile problem to an auto repairman. A sample of 150 men had 95 reporting the same success.
0.5 points) An investment is a specific risk. b. What sort of negative outcomes are possible for this type of risk? (1-3 sentences. 0.5 points) Investments can fail.
False The F test assumes that the sampled populations are not normal. A. True B. False The F test for equality of two variances tests whether the ratio of the sample variances differ significantly from 1. A.
However, in a Probit model the marginal effect is the defined by the coefficient multiplied by the G function. This means we are looking for the statistical significance of this combined partial effect not the statistical significance of the coefficient. This statistical significance is illustrated appendix 2.2 and we observe that resplast, weekslast, propresp and mailsyear are statistically significant at the 5% confidence level. However only the variable avggift was not statistically significant at the 5% confidence level