If I run an ANOVA on a two-sample data set, and get F(1, 12) = 4.56,...
If I run an ANOVA on a two-sample data set, and get F(1, 12) = 4.56, what would be the corresponding t-value if I would have just used a t-test? How do you know? What is the corresponding p -value? Would you consider this result statistically significant?
Homework Answers
Add Answer to:
If I run an ANOVA on a two-sample data set, and get
F(1, 12) = 4.56,...
Consider the following pair of data sets. Which data set will have the larger ANOVA F test...
Consider the following pair of data sets. Which data set will have the larger ANOVA F test statistic? Why? The value of the test statistic will be larger for Data Set A because it has more spread between the means than Data Set B. The value of the test statistic will be larger for Data Set A because it has a smaller standard deviation than Data Set B. The value of the test statistic will be larger for Data Set B because it has...
Using Data Set B, run the Single Factor ANOVA in Excel, as we did in class....
Using Data Set B, run the Single Factor ANOVA in Excel, as we did in class. What p-value did you get? Data Set B: Math History Oceanography 43 66 31 53 54 40 49 58 53 54 64 42 43 64 51 43 64 38 45 56 55 51 55 46 54 54 40 Group of answer choices 0.0048 0.48 1.48 0.000048
Suppose that I perform a one-way ANOVA to examine whether students in Finland, China, and Canada...
Suppose that I perform a one-way ANOVA to examine whether students in Finland, China, and Canada differ in their average scores on an achievement test. I use random samples of 2000 students from each country and find that the F value in my ANOVA is statistically significant. What can I conclude from this? What do I know?
Run a one sample t-test for HGHTI_P to test if the CHIS sample is significantly different...
Run a one sample t-test for HGHTI_P to test if the CHIS sample is significantly different from 68(the average height in the U.S.). What can you conclude based on the results of your test (Hint: what does the p-value tell you?)? Do you reject the null hypothesis, or fail to reject the null hypothesis? Does the CHIS sample population have a statistically significant different average height than 68 inches tall?
After observing statistically significant ANOVA results, Bonferroni-corrected inferences to determine which groups differ from each other...
After observing statistically significant ANOVA results, Bonferroni-corrected inferences to determine which groups differ from each other require the following steps (select all that apply): o Select one or more: a. Compute the type I error rate allowable for each pairwise comparison in order to insure that the type I error rate across all comparisons does not exceed some pre-specified level b. Determine that the difference between a specific pair of groups is statistically significant if the t-test p-value is less...
CENGAGE I MINDTAP Complete: Chapter 12 Problem Set 6. ANOVA calculations and rejection of the nul...
CENGAGE I MINDTAP Complete: Chapter 12 Problem Set 6. ANOVA calculations and rejection of the null hypothesis Click here to learn ollowing table summarizes the results of a study on SAT prep courses, com private preparation class, table to answer the remaining questions aring SAT scores of students in a a high school preparation class, and no preparation class. Use the information from the Sum of Squares (ss) 132,750.00 147,500.00 162,250.00 60 645 No prep class 625 Using the data...
Chapter 12 Extra Practice (Optional 1 03 pon When only two treatments are involved. ANOVA and...
Chapter 12 Extra Practice (Optional 1 03 pon When only two treatments are involved. ANOVA and the Student's test (Chapter 19 result in the same conclusions. Also, for computed test statistics, F To demonstrate this relationship, use the following example. Fourteen randomly selected students enrolled in a history course were divided into two groups, one consisting of 6 students who took the course in the normal lecture format. The other group of students took the course as a distance course...
For a random sample of 36 data pairs, the sample mean of the differences was 0.72....
For a random sample of 36 data pairs, the sample mean of the differences was 0.72. The sample standard deviation of the differences was 2. At the 5% level of significance, test the claim that the population mean of the differences is different from 0. (a) Is it appropriate to use a Student's t distribution for the sample test statistic? Explain. No, the sample size is not larger than 30. Yes, the sample size is larger than 30. No, the...
The following data represent the results from an independent-measures study comparing two treatment conditions. Treatment Treatment...
The following data represent the results from an independent-measures study comparing two treatment conditions. Treatment Treatment One Two 2.5 7.2 5.2 7.6 5.8 4.4 6.3 4.5 4.7 5.2 4.8 3 Using technology, run the One-way ANOVA Test for this data: F-ratio: p-value: Now, run the Two Independent Sample t test on the same data: Note: Do this with "pooled variances" since one assumption we make with ANOVA is that the variances for each group are equal. t-statistic: p-value: Do you...
The following two sample data sets both have sample mean 6. Set I 13.4 3.7 0.8...
The following two sample data sets both have sample mean 6. Set I 13.4 3.7 0.8 103 1.8 Set II 2.6 8.2 5.2 7.2 6.8 (a) If μ is the population mean perform t tests for each set to test Ho : ,,-10 against H 11 #10. (b) Do you consider the conclusions of the tests reasonable? Do you have any reservations about Use significance level a 0.05. using a t-test for either of these data sets?
Consider the following pair of data sets. Which data set will have the larger ANOVA F test statistic? Why? The value of the test statistic will be larger for Data Set A because it has more spread between the means than Data Set B. The value of the test statistic will be larger for Data Set A because it has a smaller standard deviation than Data Set B. The value of the test statistic will be larger for Data Set B because it has...
After observing statistically significant ANOVA results, Bonferroni-corrected inferences to determine which groups differ from each other require the following steps (select all that apply): o Select one or more: a. Compute the type I error rate allowable for each pairwise comparison in order to insure that the type I error rate across all comparisons does not exceed some pre-specified level b. Determine that the difference between a specific pair of groups is statistically significant if the t-test p-value is less...
CENGAGE I MINDTAP Complete: Chapter 12 Problem Set 6. ANOVA calculations and rejection of the null hypothesis Click here to learn ollowing table summarizes the results of a study on SAT prep courses, com private preparation class, table to answer the remaining questions aring SAT scores of students in a a high school preparation class, and no preparation class. Use the information from the Sum of Squares (ss) 132,750.00 147,500.00 162,250.00 60 645 No prep class 625 Using the data...
Chapter 12 Extra Practice (Optional 1 03 pon When only two treatments are involved. ANOVA and the Student's test (Chapter 19 result in the same conclusions. Also, for computed test statistics, F To demonstrate this relationship, use the following example. Fourteen randomly selected students enrolled in a history course were divided into two groups, one consisting of 6 students who took the course in the normal lecture format. The other group of students took the course as a distance course...
For a random sample of 36 data pairs, the sample mean of the differences was 0.72. The sample standard deviation of the differences was 2. At the 5% level of significance, test the claim that the population mean of the differences is different from 0. (a) Is it appropriate to use a Student's t distribution for the sample test statistic? Explain. No, the sample size is not larger than 30. Yes, the sample size is larger than 30. No, the...
The following data represent the results from an independent-measures study comparing two treatment conditions. Treatment Treatment One Two 2.5 7.2 5.2 7.6 5.8 4.4 6.3 4.5 4.7 5.2 4.8 3 Using technology, run the One-way ANOVA Test for this data: F-ratio: p-value: Now, run the Two Independent Sample t test on the same data: Note: Do this with "pooled variances" since one assumption we make with ANOVA is that the variances for each group are equal. t-statistic: p-value: Do you...
The following two sample data sets both have sample mean 6. Set I 13.4 3.7 0.8 103 1.8 Set II 2.6 8.2 5.2 7.2 6.8 (a) If μ is the population mean perform t tests for each set to test Ho : ,,-10 against H 11 #10. (b) Do you consider the conclusions of the tests reasonable? Do you have any reservations about Use significance level a 0.05. using a t-test for either of these data sets?
Most questions answered within 3 hours.
-
A golf ball rolls off a horizontal cliff with an initial speed
of 11.7 m/s. The...
asked 34 seconds ago -
1. An experiment was run where varying amounts of HClO and KClO
solutions were mixed and...
asked 12 minutes ago -
This is symbolized by a circle over a single line in an entity
relationship diagram. It...
asked 15 minutes ago -
National well-being can be measured using the Per-capita GDP
(per-capita) and the Human Development Index (HDI)....
asked 16 minutes ago -
A failure of an engine control unit causes it to fail an average
of 0.1 times...
asked 29 minutes ago -
A siren on an emergency car moving with velocity 90 km/hour
produces the sound with frequency...
asked 29 minutes ago -
Consider the schema below that models a bank’s branches,
customers and their accounts and loans. Provide...
asked 37 minutes ago -
What kinds of policies should be considered when individuals
decisions may likely impact public expense? For...
asked 45 minutes ago -
The financial statements of Apple Inc. show the following
numbers for fiscal year 2017 ($000,000):
Revenue...
asked 50 minutes ago -
Suppose that you are given the following results. Find the
correlation coefficient of the data.
sx...
asked 59 minutes ago -
The width of a tool used for semiconductor manufacturing
is assumed to be normally distributed with...
asked 1 hour ago -
A
runaway train car that has a mass of 1,400 kg travels at a speed of...
asked 1 hour ago