Question
In: Statistics and Probability
Number 5 (8 pts) An analysis of variance on the mean number of hours that Glendon...
Number 5 (8 pts) An analysis of variance on the mean number of hours that Glendon students sleep the night after consuming either one of two different brands of energy drinks or an herbal tea at lunch indicates that the means are not all the same. Further data is gathered, with the following results
| Treatment | SAMPLE SIZE | Mean number of hours of sleep | Standard deviation of hours of sleep |
| DRINK A | 21 | 7.5 | 0.5 |
| DRINK B | 21 | 7.8 | 0.3 |
| HERBAL | 21 | 8 | 0.6 |
Use a contrast to test at a 5% level of significance whether the energy drinks lead to a lower number of mean hours of sleep than the herbal tea.
Solutions
orchestra answered 2 years agoRelated Solutions
Number 5 (8 pts) An analysis of variance on the mean number of hours that Glendon...
Number 5 (8 pts) An analysis of variance on the mean number of
hours that Glendon students sleep the night after consuming either
one of two different brands of energy drinks or an herbal tea at
lunch indicates that the means are not all the same. Further data
is gathered, with the following results
Treatment
SAMPLE SIZE
Mean number of hours of sleep
Standard deviation of hours of sleep
DRINK A
21
7.5
0.5
DRINK B
21
7.8
0.3
HERBAL...
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8. What is a standard cost variance, and what is the objective
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favorable materials price variance; (2) an unfavorable materials
price variance; (3) a favorable materials quantity variance; and
(4) an unfavorable materials quantity variance
How to use mean-variance analysis with a normal distribution?
How to use mean-variance analysis with a normal
distribution?
Find the mean hours of exercise per week by the participant. Find the variance and standard...
Find the mean hours of exercise per week by the
participant.
Find the variance and standard deviation of the hours of
exercise per week by the participants.
Run a bivariate correlation to determine if there is a linear
relationship between the hours of exercise per week and the life
satisfaction. Report the results of the test statistic using
correct APA formatting.
Run a linear regression on the data. Report the results, using
correct APA formatting. Identify the amount of variation...
Average Sleep Time on a School Night Students 4 hours 8 5 hours 9 6 hours...
Average Sleep Time on a School Night
Students
4 hours
8
5 hours
9
6 hours
14
7 hours
12
8 hours
15
9 hours
4
10 hours
0
Ho: 72.7% of high school students (grade 9-12) do not get enough
sleep at night. (minimum 8 hours) (article claim)
Ha: 72.7% of high school students (grade 9-12) do get enough
sleep at night.
Record the hypothesis test. Use 5% level of significance Include
95% confidence interval on solution sheet.
Create...
Average Sleep Time on a School Night Students 4 hours 8 5 hours 9 6 hours...
Average Sleep Time on a School Night
Students
4 hours
8
5 hours
9
6 hours
14
7 hours
12
8 hours
15
9 hours
4
10 hours
0
Ho: 72.7% of high school students (grade 9-12) do not get enough
sleep at night. (minimum 8 hours)
Ha: 72.7% of high school students (grade 9-12) do get enough
sleep at night.
Sample size:
Sample mean:
Sample deviation:
Record the hypothesis test. Use 5% level of significance Include
95% confidence interval...
An analysis of variance is used to evaluate the mean differences for a research study comparing...
An analysis of variance is used to evaluate the mean differences
for a research study comparing four treatments with a separate
sample of n = 8 in each treatment. If the data produce an F-ratio
of F = 4.60, which of the following is the correct statistical
decision? Please show work. a. Reject the null hypothesis with α =
.05 but not with α = .01 b. Reject the null hypothesis with either
α = .05 or α = .01...
5. (5 pts) Conduct a present worth analysis on a new piece of vision computer technology...
5. (5 pts) Conduct a present worth analysis on a new piece of
vision computer technology is being proposed to increase the
productivity of your physical therapy facility. Your investment
cost is $35,000, and the technology will have a market value of
$5,000 at the end of 5 years. Your benefits are $11,000 per year
with the purchase of the new vision computer technology. There is
an annual subscription fee of $1,000. If your MARR is 15% per year,
is...
5. (5 pts) Conduct a present worth analysis on a new piece of vision computer technology...
5. (5 pts) Conduct a present worth analysis on a new piece of
vision computer technology is being proposed to increase the
productivity of your physical therapy facility. Your investment
cost is $35,000, and the technology will have a market value of
$5,000 at the end of 5 years. Your benefits are $11,000 per year
with the purchase of the new vision computer technology. There is
an annual subscription fee of $1,000. If your MARR is 15% per year,
is...
credit hours number of students 3 to 5 4 5 to 7 5 7 to 9...
credit hours
number of students
3 to 5
4
5 to 7
5
7 to 9
9
9 to 11
4
11 to 13
3
a) Plot the histogram, frequency polygon and cumulative
frequency polygon.
b) Compute the sample mean, sample variance and sample standard
deviation
c) estimate the median from cumulative frequency distribution
and mode from the histogram.
d) is this distribution symmetrical or skewed?
e) What percent of the student course load is expected to fall
with in...
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