1. When running an ANOVA test, you observe large differences in means between groups. Within the...
1. When running an ANOVA test, you observe large differences in means between groups. Within the ANOVA framework, this would most likely be interpreted as:
A. Evidence strongly favoring the alternative hypothesis.
B. Evidence strongly favoring the null hypothesis.
C. Evidence revealing which group mean is different from the others.
D. None of the above.
Homework Answers
Solution:- (A) Evidence strongly favoring the alternative hypothesis.
State the hypotheses. The first step is to state the null hypothesis and an alternative hypothesis.
Null hypothesis: u1 = u2 = u3 = u4
Alternative hypothesis: At-least one of the u is not equal.
Add Answer to:
1. When running an ANOVA test, you observe large differences in means between groups. Within the...
Consider the following scenario. You conduct a RCBD ANOVA test and calculate a test statistic of...
Consider the following scenario. You conduct a RCBD ANOVA test and calculate a test statistic of 3.48 for your primary research question. You had 6 different treatment groups, and 5 levels of your blocking variable. What would be the most correct conclusion to come to using a significance level of 5%? O A. Reject the null hypothesis since the p value is greater than 0.05 and conclude that at least one of the treatment group means are different to the...
When 3 or more groups are included in an ANOVA, and the probability level indicates that...
When 3 or more groups are included in an ANOVA, and the probability level indicates that the null hypothesis should be rejected, what does this tell the researcher? Group of answer choices That each mean is significantly different than every other one Specific post hoc analyses should be done to determine where there are group differences Which groups are different from which other groups It will be necessary to perform t-tests on each of the pairs of means to determine...
19) ANOVA F test was conducted to test whether the means of three groups are the...
19) ANOVA F test was conducted to test whether the means of three groups are the same against at least one group mean is different. The total number of subjects in three samples were 30. The Fratio (test statistics) was 4.25 a) What is the p-value? b) What is your conclusion at 5% significance level? Are all group means the same?
19) ANOVA F test was conducted to test whether the means of five groups are the...
19) ANOVA F test was conducted to test whether the means of five groups are the same against at least one group mean is different. The total number of subjects in five samples were 25. The F ratio (test statistics) was 5.35 a) What is the p-value? (give four decimal places) b) What is your conclusion at 1% significance level? Are all group means the same? In a certain large state prison, the age of prison population is normally distributed with...
Please solve it with detailed explanation. Thank you! A test among three groups of students shows...
Please solve it with detailed explanation.
Thank you!
A test among three groups of students shows significance with respect to differences in their GPAS. The mean of group 1 is 3.1, the mean of group 2 is 2.9, and the mean of group 3 is 3. The mean squared error is 0.7. There were 40, 25, and 35 students in each group, respectively. Test which group(s) is/are different from the others at the 0.05 significance level. The positive critical value...
1. When do we use an independent groups t-test? a. b. c. d. When we are...
1. When do we use an independent groups t-test? a. b. c. d. When we are comparing means from one sample that has been measured twice. When we are comparing means from two different samples. When we are comparing a sample mean to a population mean. When we are comparing two population means. 2. Which of the following is true regarding the use of t-tests for true experiments versus quasi-experimental designs? a. b. We use the same t-test whether it...
Source Between treatments Within treatments Sum of Squares (Ss) df Mean Square (MS) 2 310,050.00 2,650.00 In some ANOVA summary tables you will see, the labels in the first (source) column are Treatm...
Source Between treatments Within treatments Sum of Squares (Ss) df Mean Square (MS) 2 310,050.00 2,650.00 In some ANOVA summary tables you will see, the labels in the first (source) column are Treatment, Error, and Total Which of the following reasons best explains why the within-treatments sum of squares is sometimes referred to as the "error sum of squares"? O Differences among members of the sample who received the same treatment occur when the researcher O Differences among members of...
Question 3 1 pts What is the meaning of the P-value provided by a one-way ANOVA?...
Question 3 1 pts What is the meaning of the P-value provided by a one-way ANOVA? How likely that a mistake is made by rejecting a true null hypothesis If you reject the null hypothesis, there is a 5% chance that you're making an incorrect decision The probability that the observed test-statistic would occur by chance if the null hypothesis is true The probability that there is a difference between the sample means Question 4 1 pts What are the...
In ANOVA, variability between groups reflects _________, whereas variability within groups reflects __________ . total variance;...
In ANOVA, variability between groups reflects _________, whereas variability within groups reflects __________ . total variance; error variance error variance ; total variance random error; a true effect (if one exists) both a true effect (if one exists) and random error; only random error just a true effect (if one exists); random error Rejecting the null hypothesis with the overall or omnibus One-way Analysis of Variance indicates that the: mean of one sample differs significantly from the mean of at...
1. An analysis of variance with one dependent and one independent variable is referred to as:...
1.
An analysis of variance with one dependent and one independent
variable is referred to as:
A)
one-way ANOVA
B)
two-way ANOVA
C)
many-way ANOVA
D)
correlation
3. What is the
null hypothesis when using ANOVA?
A)
B)
C)
D)
4. What is
the research hypothesis when using ANOVA procedures?
A) all of the
group means are equal
B) all of the
group means are significantly different from all other group
means
C) at least one
of the group means is significantly different from...
Consider the following scenario. You conduct a RCBD ANOVA test and calculate a test statistic of 3.48 for your primary research question. You had 6 different treatment groups, and 5 levels of your blocking variable. What would be the most correct conclusion to come to using a significance level of 5%? O A. Reject the null hypothesis since the p value is greater than 0.05 and conclude that at least one of the treatment group means are different to the...
19) ANOVA F test was conducted to test whether the means of three groups are the same against at least one group mean is different. The total number of subjects in three samples were 30. The Fratio (test statistics) was 4.25 a) What is the p-value? b) What is your conclusion at 5% significance level? Are all group means the same?
Please solve it with detailed explanation.
Thank you!
A test among three groups of students shows significance with respect to differences in their GPAS. The mean of group 1 is 3.1, the mean of group 2 is 2.9, and the mean of group 3 is 3. The mean squared error is 0.7. There were 40, 25, and 35 students in each group, respectively. Test which group(s) is/are different from the others at the 0.05 significance level. The positive critical value...
1. When do we use an independent groups t-test? a. b. c. d. When we are comparing means from one sample that has been measured twice. When we are comparing means from two different samples. When we are comparing a sample mean to a population mean. When we are comparing two population means. 2. Which of the following is true regarding the use of t-tests for true experiments versus quasi-experimental designs? a. b. We use the same t-test whether it...
Source Between treatments Within treatments Sum of Squares (Ss) df Mean Square (MS) 2 310,050.00 2,650.00 In some ANOVA summary tables you will see, the labels in the first (source) column are Treatment, Error, and Total Which of the following reasons best explains why the within-treatments sum of squares is sometimes referred to as the "error sum of squares"? O Differences among members of the sample who received the same treatment occur when the researcher O Differences among members of...
Question 3 1 pts What is the meaning of the P-value provided by a one-way ANOVA? How likely that a mistake is made by rejecting a true null hypothesis If you reject the null hypothesis, there is a 5% chance that you're making an incorrect decision The probability that the observed test-statistic would occur by chance if the null hypothesis is true The probability that there is a difference between the sample means Question 4 1 pts What are the...
1.
An analysis of variance with one dependent and one independent
variable is referred to as:
A)
one-way ANOVA
B)
two-way ANOVA
C)
many-way ANOVA
D)
correlation
3. What is the
null hypothesis when using ANOVA?
A)
B)
C)
D)
4. What is
the research hypothesis when using ANOVA procedures?
A) all of the
group means are equal
B) all of the
group means are significantly different from all other group
means
C) at least one
of the group means is significantly different from...
Most questions answered within 3 hours.
-
What type of reactions occurs when carboxylic acids react with a
strong base?
a.)
Oxidation
b.)...
asked 41 seconds ago -
A customer purchases $150 of goods at a Dollarama store using a
$100 gift card with...
asked 3 minutes ago -
What trends will be something future Sociology in Sport classes
study? In other words, what sociological...
asked 22 minutes ago -
A certain parallel-plate capacitor is filled with a dielectric
for which κ = 4.61. The area...
asked 23 minutes ago -
Question 19
Gizmo's Inc.
Quantity
Price
0
$20
1
$18
2
$16
3
$14
4
$12...
asked 28 minutes ago -
The efficiency of sample information a. is the EVSI/(maximum EMV
without SI) expressed as a percentage....
asked 40 minutes ago -
The molecular and cellular processes in vertebrate embryos used
to establish the body axes and specify...
asked 44 minutes ago -
A titre has the same units as concentration. Are they the same
thing?
Group of answer...
asked 44 minutes ago -
Assume that an online movie subscription service currently has
7.4 million customers and that its retention...
asked 1 hour ago -
calculate the orbital frequency for the ground state
orbit of hydrogen atom (k=9x10^9 m/f e=1.60x10^-19
m=9.11x10^-31kj
asked 1 hour ago -
(Q#1) Hydroxyapatite has the formula
Ca5(PO4)3(OH) and is the main
mineral component of dental enamel and...
asked 1 hour ago -
How do e-mail, instant messaging, and Voice over Internet
Protocol work, and how is information using...
asked 1 hour ago