Question
In: Math
A professor has noticed that, even though attendance is not a component of the final grade...
A professor has noticed that, even though attendance is not a component of the final grade for the class, students that attend regularly generally get better grades. In fact, 36% of those who come to class on a regular basis receive A's. Only 4% who do not attend regularly get A's. Overall, 60% of students attend regularly. Based on this class profile, suppose we are randomly selecting a single student from this class, and answer the questions below.
Hint #1: pretend that there are 1000 students in the class and use the values given in the problem to construct the appropriate contingency table. Round cell frequencies to the nearest integer
C) P(receives A's) =
D) P(attends regularly | receives A's)
E) P(does not attend regularly | does not receive A's) =
Solutions
milcah answered 1 year agoRelated Solutions
A professor has noticed that, even though attendance is not a component of the final grade...
A professor has noticed that, even though attendance is not a
component of the final grade for the class, students that attend
regularly generally get better grades. In fact, 48% of those who
come to class on a regular basis receive A's. Only 6% who do not
attend regularly get A's. Overall, 60% of students attend
regularly. Based on this class profile, suppose we are randomly
selecting a single student from this class, and answer the
questions below.
Hint #1:...
An instructor is interested in seeing if there is an association between attendance and final grade...
An instructor is interested in seeing if there is an association
between attendance and final grade earned in a freshman level
class. He records the number of absences for each student and then
whether they pass or fail the class. The results are summarized
below.
Number of Absences
0-3
4-6
7+
Total
Total
135
66
29
230
Fail
28
19
23
70
Total
163
85
52
300
Construct a 99% confidence interval for the true proportion of
students who pass...
The product offers life protection, savings and even has investment component. Even though it runs for...
The product offers life protection, savings and even has
investment component. Even though it runs for a specified period,
life assurance companies are flexible to extend cover so that they
make sure that money became available to the policyholders
dependents on their death.
Identify and describe the variations
under this product.
[25 marks]
Even though she has her own priorities on spending, Professor Kelton suggests that under Modern Monetary...
Even though she has her own priorities on spending, Professor
Kelton suggests that under Modern Monetary Theory (MMT) the
government can spent the money on anything it wants. It can spend
all of its money on guns and tanks rather than on butter and
classrooms. Professor Kelton posits this idea to show that MMT (the
idea that government can print its own money) is neutral and
viable. Do you agree?
Professor Smith wants to determine if a correlation exists between absences and final grade. She determines...
Professor Smith wants to determine if a correlation exists
between absences and final grade. She determines the number of
absences for ten students in her class and then determines the mean
final score for those students. Below are her data:
Student Absences Score
1................. 0...........95
2................. 1.......... 90
3................. 4.......... 72
4................. 3.......... 78
5................. 2.......... 84
6................. 5.......... 67
7................. 4.......... 71
8................. 2.......... 80
9................. 7.......... 55
10............... 5 ......... 64
1. State the null hypothesis: ______________________
2....
This is the final grade and number of absences for a set of students. Regress grade...
This is the final grade and number of absences for a set of
students. Regress grade on absences. Use a 95% confidence level.
Give the equation of estimation. Interpret the equation. According
to the regression, now much does a tardy (= 1/2 an absence) change
your grade? Evaluate the model. What evaluation criterion did you
use? Could this be a case of reverse causality? If so, give an
example of how the causation could run in the opposite
direction.
Student...
Does the location of your seat in a classroom play a role in attendance or grade?...
Does the location of your seat in a classroom play a role in
attendance or grade? students in a physics
course were randomly assigned to one of four groups. The 400
students in group 1 sat 0 to 4 meters from the front
of the class, the 400 students in group 2 sat 4 to 6.5 meters from
the front, the 400 students in group 3 sat 6.5 to 9
meters from the front, and the 400 students in group...
Good performance (obtaining a grade of A+) in this probability class depends on your attendance (A)...
Good performance (obtaining a grade of A+) in this probability
class depends on your attendance (A) and completion of assignments
(C). The probability that you will receive a grade of A+ are 95%,
75%, 50%, and 0%, if you attend the class and complete the
assignments, if you attend but do not complete assignments, if you
do not attend but complete assignments, and if you neither attend
nor complete assignments, respectively. Further assume that if you
attend the class, there...
A particular professor has noticed that the number of people, P, who complain about his attitude...
A particular professor has noticed that the number of people,
P, who complain about his attitude is dependent on the
number of cups of coffee, n, he drinks. From eight days of
tracking he compiled the following data:
People (P)
10
12
10
10
7
6
6
3
Cups of coffee (n)
1
1
2
2
3
3
4
5
Unless otherwise stated, you can round values to two decimal
places.
a) Using regression to find a linear equation for...
A particular professor has noticed that the number of people, P, who complain about his attitude...
A particular professor has noticed that the number of people, P,
who complain about his attitude is dependent on the number of cups
of coffee, n, he drinks. From eight days of tracking he compiled
the following data: People (P) 11 12 10 9 6 6 6 4 Cups of coffee
(n) 1 1 2 2 3 3 4 5 Unless otherwise stated, you can round values
to two decimal places. Parts d), e) and g) will not be graded...
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