Two sections of 70 Introductory Sociology students were taught with one section using no text and...
Two sections of 70 Introductory Sociology students were taught with one section using no text and the other section using a popular introductory text. At mid-term, the same test was given to both sections with the following results:
No Text Popular Text
n1=70 n2=70
1=75 2=71
S1=8 S2=10
a) Test for the significance of the difference between two population means (set α (alpha) =.01 level).
b) Calculate the effect size (ES) and determine its strength
Homework Answers
Add Answer to:
Two sections of 70 Introductory Sociology students were taught
with one section using no text and...
There are two sections of statistics, one in the morning (AM) with 24 students and one...
There are two sections of statistics, one in the morning (AM)
with 24 students and one in the afternoon (PM) with 27 students.
Each section takes an identical test. The PM section, on average,
scored higher than the AM section. The results are summarized in
the table below.
Necessary information:
n
x
s2
s
PM (x1)
27
80.8
277.5
16.66
AM (x2)
24
70.9
250.3
15.82
The Test: Test the claim that the PM section did
significantly better than the...
Analyses of drinking water samples for 100 homes in each of two different sections of a...
Analyses of drinking water samples for 100 homes in each of two different sections of a city gave the following means and standard deviations of lead levels (in parts per million): Section 1: n1 = 100, x¯1 = 34.1, s1 = 5.9, Section 2: n2 = 100, x¯2 = 36.0, s2 = 6.0. (a) Calculate the test statistic and its p-value to test for a difference in the two population means. Use the p-value to evaluate the statistical significance of...
Two teaching methods and their effects on science test scores are being reviewed. A group of...
Two teaching methods and their effects on science test scores are being reviewed. A group of students is taught using interactive simulation software. A second group of students is taught in traditional lab sessions. The science test scores for the two groups are given below. At α = 0.05, can you support the claim that the mean science test score is higher for students taught using the interactive software than it is for students taught using the traditional lab method?...
There are two sections of statistics, one in the afternoon (PM) with 30 students and one...
There are two sections of statistics, one in the afternoon (PM) with 30 students and one in the morning (AM) with 22 students. Each section takes the identical test. The PM section, on average, scored higher than the AM section. The scores from each section are given in the table below. Test the claim that the PM section did significantly better than the AM section, i.e., is the difference in mean scores large enough to believe that something more than...
Do a two-sample test for equality of means assuming unequal variances. Calculate the p-value using Excel....
Do a two-sample test for equality of means assuming unequal variances. Calculate the p-value using Excel. (a-1) Comparison of GPA for randomly chosen college juniors and seniors: x⎯⎯1x1 = 4.75, s1 = .20, n1 = 15, x⎯⎯2x2 = 5.18, s2 = .30, n2 = 15, α = .025, left-tailed test. (Negative values should be indicated by a minus sign. Round down your d.f. answer to the nearest whole number and other answers to 4 decimal places. Do not use "quick"...
Do a two-sample test for equality of means assuming unequal variances. Calculate the p-value using Excel....
Do a two-sample test for equality of means assuming unequal variances. Calculate the p-value using Excel. (a-1) Comparison of GPA for randomly chosen college juniors and seniors: x⎯⎯1x1 = 4.75, s1 = .20, n1 = 15, x⎯⎯2x2 = 5.18, s2 = .30, n2 = 15, α = .025, left-tailed test. (Negative values should be indicated by a minus sign. Round down your d.f. answer to the nearest whole number and other answers to 4 decimal places. Do not use "quick"...
Do a two-sample test for equality of means assuming unequal variances. Calculate the p-value using Excel....
Do a two-sample test for equality of means assuming unequal variances. Calculate the p-value using Excel. (a-1) Comparison of GPA for randomly chosen college juniors and seniors: x⎯⎯1x1 = 4.75, s1 = .20, n1 = 15, x⎯⎯2x2 = 5.18, s2 = .30, n2 = 15, α = .025, left-tailed test. (Negative values should be indicated by a minus sign. Round down your d.f. answer to the nearest whole number and other answers to 4 decimal places. Do not use "quick"...
Do a two-sample test for equality of means assuming unequal variances. Calculate the p-value using Excel....
Do a two-sample test for equality of means assuming unequal variances. Calculate the p-value using Excel. (a-1) Comparison of GPA for randomly chosen college juniors and seniors: x⎯⎯1 = 4, s1 = .20, n1 = 15, x⎯⎯2 = 4.25, s2 = .30, n2 = 15, α = .025, left-tailed test. (Negative values should be indicated by a minus sign. Round down your d.f. answer to the nearest whole number and other answers to 4 decimal places. Do not use "quick"...
Do a two-sample test for equality of means assuming unequal variances. Calculate the p-value using Excel....
Do a two-sample test for equality of means assuming unequal variances. Calculate the p-value using Excel. (a-1) Comparison of GPA for randomly chosen college juniors and seniors: x⎯⎯1 = 4, s1 = .20, n1 = 15, x⎯⎯2 = 4.25, s2 = .30, n2 = 15, α = .025, left-tailed test. (Negative values should be indicated by a minus sign. Round down your d.f. answer to the nearest whole number and other answers to 4 decimal places. Do not use "quick"...
Do a two-sample test for equality of means assuming unequal variances. Calculate the p-value using Excel....
Do a two-sample test for equality of means assuming unequal variances. Calculate the p-value using Excel. (a-1) Comparison of GPA for randomly chosen college juniors and seniors: x⎯⎯1 = 4, s1 = .20, n1 = 15, x⎯⎯2 = 4.25, s2 = .30, n2 = 15, α = .025, left-tailed test. (Negative values should be indicated by a minus sign. Round down your d.f. answer to the nearest whole number and other answers to 4 decimal places. Do not use "quick"...
There are two sections of statistics, one in the morning (AM)
with 24 students and one in the afternoon (PM) with 27 students.
Each section takes an identical test. The PM section, on average,
scored higher than the AM section. The results are summarized in
the table below.
Necessary information:
n
x
s2
s
PM (x1)
27
80.8
277.5
16.66
AM (x2)
24
70.9
250.3
15.82
The Test: Test the claim that the PM section did
significantly better than the...
Most questions answered within 3 hours.
-
Katelynn, a physician, earns $200,000 from her medical practice
in the current year. She receives $45,000...
asked 3 minutes ago -
Each row of the table below describes an aqueous solution at
25°C
.
The second column...
asked 7 minutes ago -
A horizontal wire is at y = 0. Current travels in the +x
direction. The magnetic...
asked 8 minutes ago -
Let X be a continuous random variable whose PDF is Let X be a
continuous random...
asked 29 minutes ago -
Martinez Company’s relevant range of production is 7,500 units
to 12,500 units. When it produces and...
asked 27 minutes ago -
A football with a mass of 1.2 kg is kicked from ground level to
a height...
asked 32 minutes ago -
Remember: Changes in supply determinants shift supply, and
changes in demand determinants shift demand. We say...
asked 31 minutes ago -
Why is the answer b), for this question? I came up with C) for
my incorrect...
asked 37 minutes ago -
Suppose that you know that in the population of full-time
employees in the United States, the...
asked 59 minutes ago -
This experiment was designed originally to sample various meat and carcass quality
aspects of Ontario pigs...
asked 1 hour ago -
Dopamine Hydrochloride: draw the structure And Show the
functional groups in different colors and label the...
asked 52 minutes ago -
A rope supports a 10 kg dumbbell hanging from it. What is the
tension in the...
asked 51 minutes ago