Question
In: Statistics and Probability
The data in tab "Gender and Grades" shows the results of a recent study regarding gender...
The data in tab "Gender and Grades" shows the results of a recent study regarding gender and grades. We want to determine if gender and grades are independent. Use a 3% level of significance to test this. State the null and alternative hypotheses.
|
Ha: Variables are independent |
||
|
Ho: Variables are independent Ha: Variables are not independent |
Test the hypothesis from Question 18. Do you accept or reject Ho?
|
Accept |
||
|
Reject |
Data:
| Grade | Male | Female |
| A Student | 82 | 61 |
| B Student | 86 | 100 |
| C Student | 100 | 79 |
| D Student | 80 | 90 |
| F Student | 88 | 83 |
Solutions
orchestra answered 2 years agoRelated Solutions
Research into the relationship between hours of study and grades shows widely different conclusions. A recent...
Research into the relationship between hours of study and grades
shows widely different conclusions. A recent survey of graduates
who wrote the Graduate Management Admissions Test (GMAT) had the
following results.
Hours
Studied
Average
(Midpoint) Score
40
210
50
300
65
345
75
455
85
540
105
660
95
700
Run the regression analysis in Excel on this data. Include your
output with your answer. (Note: You may calculate by hand if you
prefer).
What is the regression equation...
Research into the relationship between hours of study and grades shows widely different conclusions. A recent...
Research into the relationship between hours of study
and grades shows widely different conclusions. A recent survey of
graduates who wrote the Graduate Management Admissions Test (GMAT)
had the following results.
Hours
Studied Average
(Midpoint) Score
40 210
50 300
65 345
75 455
85 540
105 660
95 700
Run the regression analysis in Excel on this data.
Include your output with your answer. (Note: You may calculate by
hand if you prefer).
What is the regression equation for...
Research into the relationship between hours of study and grades shows widely different conclusions. A recent...
Research into the relationship between hours of study and grades
shows widely different conclusions. A recent survey of graduates
who wrote the Graduate Management Admissions Test (GMAT) had the
following results.
Hours
Studied [Average Score]
(Midpoint)
40 220
50 310
65 350
75 440
85 560
105 670
95 700
a) Run the regression analysis in Excel on this data. Include
your output with your answer. (Note: You may calculate by hand if
you prefer).
b) What is the regression...
Research into the relationship between hours of study and grades shows widely different conclusions. A recent...
Research into the relationship between hours of study and grades
shows widely different conclusions. A recent survey of graduates
who wrote the Graduate Management Admissions Test (GMAT) had the
following results.
Hours Studied ( Midpoint)
Average Score
40
220
50
310
65
350
75
440
85
560
105
670
95
700
a) Run the regression analysis in Excel on this data. Include
your output with your answer. (Note: You may calculate by hand if
you prefer).
b) What is the...
A research study found the following sample data regarding preferred pace of life and gender: &nbs
A research study found the following sample data regarding
preferred pace of life and gender:
Gender
Preferred Pace of
Life Male
Female
Slower
230
218
No
Preference
20
24
Faster
90
48
Test to see if Preferred Pace of Life is independent of Gender.
Assume α = 0.01.
What is the expected frequency for No Preference and Female if
the variables are independent?
How many degrees of freedom are in the test?
What is the critical value of the test statistic?...
A) The data below shows the mean M and standard deviation S For the grades of...
A) The data below shows the mean M and standard deviation S For
the grades of three subjects: M1=70, S1=5. M2=60,S2=2. M3=95,S3=1
certain student took the three subjects she got 72 in the first 66
in the second and 90 in the third in which cause she did better?( I
am not sure if she did better in subject two or three because
subject three has a standard deviation of 1)
B) A large basket of fruit contains 13 oranges...
Background: This activity is based on the results of a recent study on the safety of...
Background: This activity is based on the
results of a recent study on the safety of airplane drinking water
that was conducted by the U.S. Environmental Protection Agency
(EPA). A study found that out of a random sample of 316 airplanes
tested, 40 had coliform bacteria in the drinking water drawn from
restrooms and kitchens. As a benchmark comparison, in 2003 the EPA
found that about 3.5% of the U.S. population have coliform
bacteria-infected drinking water. The question of interest...
The results of a recent poll on the preference of shoppers regarding two products are shown...
The results of a recent poll on the preference of shoppers
regarding two products are shown below:
Product
Shoppers Favoring this Product
Shoppers Surveyed
1
550
750
2
615
875
Suppose we wanted to see if there was a significant difference
in the preference of these two products.
What would be the correct alternative hypothesis for the above
test?
[
Select ]
["p1 is not...
1. The results of a recent poll on the preference of shoppers regarding two products are...
1. The results of a recent poll on the preference of shoppers
regarding two products are shown below.
Product
Shoppers Surveyed
Shoppers Favoring
This Product
A
800
560
B
900
612
At 95% confidence, the margin of error is
a.
.0225.
b.
.044.
c.
.025.
d.
.064.
2. The following information was obtained from independent
random samples taken of two populations.
Assume normally distributed populations with equal
variances.
Sample 1
Sample 2
Sample Mean
45
42
Sample Variance
85...
Locate the results of a recent survey that shows at least two variables in a newspaper,...
Locate the results of a recent survey that shows at least two
variables in a newspaper, magazine, or Internet article. Outline
the survey data so that your peers can understand the variables and
results, and then identify at least one key formula from this
module that you could use to evaluate the data. Provide a brief
explanation of why you selected the formula you did and why it
matters. Also, explain what the formula is, and clearly define your
parameters.
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