Question
In: Statistics and Probability
Given: trying to determine if grading practices are consistent with the rest of their department. Historical...
Given: trying to determine if grading practices are consistent with the rest of their department. Historical data indicated the department's overall grade distribution for the course this instructor teaches is the following:
A/A-: 54% B+/B/B-: 28% C+/C/C-: 11% D+/D/D-: 3% F: 2% other: 2%
following the semester final grades are shown below for the
course:
A/A-: 53 B+/B/B-" 36 C+/C/C-: 12 D+/D/D-: 5 F:1 other: 3 total: 110 to test this consistency, the instructor will use a chi-square goodness-of-fit test
Q7: construct the null and alternative hypotheses for this test
Q8:Determine the expected counts assuming the null is
trie for the following categories. A/A-, B+/B/B-, C+/C/C-, D=/D/D-,
F, other
Q9: perform the chi-square goodness-of-fit test at the .05 significance level
Solutions
orchestra answered 1 year agoRelated Solutions
A professor wishes to determine if his grading is consistent, so he reviews the grades of...
A professor wishes to determine if his grading is consistent, so
he reviews the grades of a sample of students and determines that
7% earned an A. In each of his current classes with 25 enrolled,
between what two class percentages of students earning A's should
he to occur 90% of the time?
And how would this be put into Excel?
A professor wishes to determine if his grading is consistent, so he reviews the grades of...
A professor wishes to determine if his grading is consistent, so
he reviews the grades of a sample of students and determines that
7% earned an A. In each of his current classes with 25 enrolled,
between what two class percentages of students earning A's should
he to occur 90% of the time?
And how would this be put into Excel?
- Given the following information, determine the beta coefficient for Stock L that is consistent with...
- Given the following information, determine the beta
coefficient for Stock L that is consistent with equilibrium: =
9.5%; rRF = 2.5%; rM = 11.5%.
- You have been managing a $5 million portfolio that has a beta
of 1.05 and a required rate of return of 11.925%. The current
risk-free rate is 3%. Assume that you receive another $500,000. If
you invest the money in a stock with a beta of 1.35, what will be
the required return on...
Your manager is trying to determine what forecasting method to use. Based on the following historical...
Your manager is trying to determine what forecasting method to
use. Based on the following historical data, calculate the
following forecast and specify what procedure you would
utilize.
month
actual demand
1
62
2
65
3
67
4
68
5
71
6
73
7
76
8
78
9
78
10
80
11
84
12
85
1. Calculate the exponential smoothing with trend component
forecast for periods 2–12 using an initial trend forecast
(T1) of 1.8, an initial exponential smoothing
forecast...
Your manager is trying to determine what forecasting method to use. Based on the following historical...
Your manager is trying to determine what forecasting method to
use. Based on the following historical data, calculate the
following forecasts and specify what procedure you would
utilize.
MONTH
ACTUAL DEMAND
1
53
2
56
3
58
4
65
5
74
6
75
7
76
8
77
9
77
10
79
11
81
12
82
c. Calculate the single exponential smoothing
forecast for periods 2–12 using an initial forecast
(F1) of 61 and an α of 0.30.
d. Calculate the...
Given the following information, determine the beta coefficient for Stock L that is consistent with equilibrium: =...
Given the following information, determine the beta coefficient
for Stock L that is consistent with equilibrium: =
9.25%; rRF = 3.45%; rM = 12.5%. Round your
answer to two decimal places.
Given the following information, determine the beta coefficient for Stock L that is consistent with equilibrium: =...
Given the following information, determine the beta coefficient
for Stock L that is consistent with equilibrium: = 13%;
rRF = 4.65%; rM = 12.5%. Round your answer to
two decimal places.
Given the following information, determine the beta coefficient for Stock L that is consistent with equilibrium: =...
Given the following information, determine the beta coefficient
for Stock L that is consistent with equilibrium: =
12.5%; rRF = 5.5%; rM = 8.5%. Round your
answer to two decimal places.
You have been managing a $5 million portfolio that has a beta of
1.05 and a required rate of return of 10.775%. The current
risk-free rate is 5%. Assume that you receive another $500,000. If
you invest the money in a stock with a beta of 1.25, what will be...
1. Given the following information, determine the beta coefficient for Stock L that is consistent with...
1. Given the following information, determine the beta
coefficient for Stock L that is consistent with equilibrium: r^L =
9.5%; rRF = 2.5%; rM = 10.5%. Round your
answer to two decimal places.
2. You have been managing a $5 million portfolio that has a beta
of 1.35 and a required rate of return of 8.075%. The current
risk-free rate is 2%. Assume that you receive another $500,000. If
you invest the money in a stock with a beta of...
The math department is trying to determine if their tests have a gender bias. They look...
The math department is trying to determine if their tests have a
gender bias. They look at scores at old exams which were normally
distributed and take a random sample of students. They found that
the scores of the 16 male students had a normal distribution with a
mean of 72.4 and a standard deviation of 7.1. The scores of the 17
females students had a normal distribution with a mean of 77.4 and
a standard deviation of 5.2. Using...
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