Violating the assumption of homogeneity of variance tends to increase the likelihood of committing a Type I error.
Question 17 options:
True | |
False |
This statement is True as type I error can occur with greater probability if assumption of homogeneity of variance gets violated.
Violating the assumption of homogeneity of variance tends to increase the likelihood of committing a Type...
Levene's test for homogeneity of variance meets the assumption of equal variances in ANOVA when the test is statistically non-significant, that is when sig. value in SPSS output is more than 0.05 Question 18 options: True False
Setting a small significance level (i.e., alpha = 0.05) protects against committing a Type II error. True False
State whether the following statements true or false, and Why? 1. The type I error and type II error are related. A decrease in the probability of one generally results in an increase in the probability of the other. 2. The size of the critical region, and therefore the probability of committing a type I error, can always be reduced by adjusting the critical value(s). 3. An increase in the sample size n will reduce α and β simultaneously. 4....
A car manufacturer wants to test if the variance of miles-per-gallon (mpg) for a specific 2018 car model is lower than the variance for the 2017 model. The 2017 model's variance is known to be 0.25 mpg2. After collecting data from 20 2018 models, the sample mean and sample variance are computed to be 30 mpg and 0.245 mpg2, respectively. Are both statements of error below correct? type I error: conclude 2018 variance is not lower when it is. type...
Once you have answered all the questions you have to send the work the Attach File function in Black Board to attach your document and send it to the professor. To use the Attach File enter the Course Content in Black Board. Select the Assignment Module 8, attach the file and submit. To compute the type 1 error of hypothesis testing lets vary the sample size of the textbook example of the mean burn of the sample of propellants. Remember...
answer all please
In an analysis of variance, the MS between and MS within represent the means of the squared variability between and within conditions. True • False QUESTION 14 If an analysis of variance produces SS between 30 and MS between 10, then the ANOVA is comparing three treatment conditions. True False QUESTION 15 Compared to an independent measures design a repeated measures study is more likely to find a statistically significant effect because it reduces the contribution of...
QUESTION 7 Problem 2) True False (2) Type I Error is the probability that you fail to reject the null hypothesis when it was false. True False
3. Multiple Choice Question An engineer measures the weights (in kilograms) of steel pieces. They would like to test H: = 5 against H: > 5. The weights follow a normal distribution with variance 16. Using a sample of size n = 25, the engineer decides to reject Hif I > 6. Assuming that the true population mean is 5.2, determine the probability of committing an error of Type II error A. 0.8413 B. 0.05 C. 0.9332 D. 0.8943 E....
Question 19 (5 points) A Type I error occurs in hypothesis testing when we Question 19 options: a) reject the alternative hypothesis and the alternative hypothesis is true. b) fail to reject the null hypothesis and the null hypothesis is false. c) fail to reject the alternative hypothesis and the alternative hypothesis is false. d) reject the null hypothesis and the null hypothesis is true. Question 20 (5 points) A golfer claims that his average golf score at the course...
Question 16 (1 point) A t-test equation can be used to estimate sample size and power? O 1) True O 2) False Save Question 17 (1 point) The standard error the mean is not used in independent t tests? O 1) True O 2) False Save Question 18 (1 point) Before you determine the p-value of an independent t test you should first determine if the variances are equal. You havea greater chance of rejecting the null if the variances...