Question
In: Statistics and Probability
nn psychology students took a standardized test. The scores are summarized in the GFDT below. Scores ...
nn psychology students took a standardized test. The scores are
summarized in the GFDT below.
| Scores | Frequency |
|---|---|
| 220 - 224 | 14 |
| 225 - 229 | 15 |
| 230 - 234 | 16 |
| 235 - 239 | |
| 240 - 244 | 17 |
| 245 - 249 | 40 |
The scores are also described in the cumulative table shown
below.
| Scores | Frequency |
|---|---|
| less than 225 | 14 |
| less than 230 | 29 |
| less than 235 | 45 |
| less than 240 | 63 |
| less than 245 | 80 |
| less than 250 | nn |
What is the missing value in the GFDT
Solutions
Expert Solution
Solution:
Given:
| Scores | Frequency |
|---|---|
| 220 - 224 | 14 |
| 225 - 229 | 15 |
| 230 - 234 | 16 |
| 235 - 239 | |
| 240 - 244 | 17 |
| 245 - 249 | 40 |
The scores are also described in the cumulative table shown below.
| Scores | Frequency |
|---|---|
| less than 225 | 14 |
| less than 230 | 29 |
| less than 235 | 45 |
| less than 240 | 63 |
| less than 245 | 80 |
| less than 250 | nn |
We have to find the missing value in the GFDT.
Missing value class is 235-239.
From second table above, We have Scores less than 240 = 63 and Scores less than 235 = 45
thus scores between 235 and 239 = 63 - 45 = 18
Thus missing value in the GFDT = 18.
Value of nn:
Scores Frequency
| 220 - 224 | 14 |
| 225 - 229 | 15 |
| 230 - 234 | 16 |
| 235 - 239 | 18 |
| 240 - 244 | 17 |
| 245 - 249 | 40 |
| nn =total = 120 |
Thus value of nn = 120
orchestra answered 3 years agoRelated Solutions
The test scores of 40 students are summarized in the frequency table below. What is the...
The test scores of 40 students are summarized in the
frequency table below. What is the standard deviation, mean, and
median?
Score students
50-59 14
60-69 6
70-79 5
80-89 9
90-99 6
1. Nine students took the SAT test. Their scores are listed below. Later on, they took...
1. Nine students took the SAT test. Their scores are listed
below. Later on, they took a test preparation course and retook the
SAT. Their new scores are listed below. Use the Sign test to test
the claim that the test preparation has no effect on their scores.
Use α = 0.05.
Student
1
2
3
4
5
6
7
8
9
Before
860
820
910
990
1000
930
870
1180
920
After
880
820
900
1030
1030
940
860...
Three independent group students took an exam. The data presented below represent the students’ test scores....
Three independent group students took an exam. The data
presented below represent the students’ test scores.
Group 1 Group 2 Group 3
95 79 65
98 76 68
80 60 70
77 88 87
99 69 66
90 66 72
Based on the post hoc (Tukey) test, which two groups have a
significant difference at the 0.05 level ?
a. group 1 and group 2
b. group 1 and group 3
c. group 2 and group 3
d. both a...
A sample of freshmen takes a reading comprehension test and their scores are summarized below. If...
A sample of freshmen takes a reading comprehension test and
their scores are summarized below. If the mean for the general
population on this test is m = 12, can you conclude that this
sample is significantly different from the population. Test with a
= .05.
Sample Scores: 16, 8, 8, 6, 9, 11, 13, 9, 10
A. Find M=
B.Find SS=
C.Find standard error =
D.Find t =
E. Choose one:
Reject H0 =1
Fail to Reject H0 =2
A test was given to a group of students. The grades and gender are summarized below...
A test was given to a group of students. The grades and gender
are summarized below A B C Total Male 6 17 16 39 Female 19 9 15 43
Total 25 26 31 82 If one student is chosen at random from those who
took the test, Find the probability that the student got a 'C'
GIVEN they are male
Giving a test to a group of students, the grades and gender are summarized below A...
Giving a test to a group of students, the grades and gender are
summarized below
A
B
C
Total
Male
3
12
6
21
Female
10
2
5
17
Total
13
14
11
38
Let ππ represent the percentage of all male students who would
receive a grade of C on this test. Use a 80% confidence interval to
estimate p to three decimal places.
Enter your answer as a tri-linear inequality using decimals (not
percents).
< p <
Giving a test to a group of students, the grades and gender are summarized below A...
Giving a test to a group of students, the grades and gender are
summarized below
A
B
C
Total
Male
3
12
6
21
Female
10
2
5
17
Total
13
14
11
38
Let ππ represent the percentage of all male students who would
receive a grade of C on this test. Use a 80% confidence interval to
estimate p to three decimal places.
Enter your answer as a tri-linear inequality using decimals (not
percents).
< p <
Giving a test to a group of students, the grades and gender are summarized below A...
Giving a test to a group of students, the grades and gender are
summarized below
A
B
C
Total
Male
6
15
12
33
Female
9
14
2
25
Total
15
29
14
58
If one student is chosen at random,
Find the probability that the student was
female:
Find the probability that the student was female AND got a
"A":
Find the probability that the student was female OR got a
"A":
If one student is chosen at random,...
Giving a test to a group of students, the grades and gender are summarized below A...
Giving a test to a group of students, the grades and gender are
summarized below
A
B
C
Total
Male
13
20
5
38
Female
10
2
6
18
Total
23
22
11
56
If one student is chosen at random,
Find the probability that the student was female:
Find the probability that the student was female AND got a
"A":
Find the probability that the student was male OR got an "B":
Find the probability that the student got...
Giving a test to a group of students, the grades and gender are summarized below A...
Giving a test to a group of students, the grades and gender are
summarized below
A
B
C
Total
Male
20
7
18
45
Female
5
17
15
37
Total
25
24
33
82
If one student is chosen at random,
Find the probability that the student was male:
Find the probability that the student was female AND got a
"A":
Find the probability that the student was female OR got an
"B":
Find the probability that the student was...
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- What is the potential of a cell made up of Zn|Zn2+ and Cu|Cu2+ half-cells at 25o...
- Write a Java Program using the following instruction: Create the following 3 methods that calculate and...
- How would the S/D curves shift if a $3 tax was imposed on suppliers for each...
- Why should a time-based authentication system invalidate the current password on a successful authentication?
- Explain the difference between a market penetration strategy and a market development strategy.
- QUESTION 4 Discuss the sanctity of life versus the quality of life debate as presented by...
- 0.560 g He, 20.482 g F2, and 13.960 g Ar are placed in a 18.4-L container...
ADVERTISEMENT