Question
In: Statistics and Probability
In a study of obesity the following results were obtained from samples of males and females...
-
In a study of obesity the following results were obtained from samples of males and females between the ages of 20 and 75:
n Number OverweightMales 150 21
Females 200 48
Can we conclude from these data that in the sampled populations there is a difference in theproportions who are overweight? Let a = .05.
Solutions
orchestra answered 1 year agoRelated Solutions
The following results were obtained in an environmental cohort study which was investigating the risk of...
The following results were obtained in an environmental cohort
study which was investigating the risk of brain cancer associated
with exposure to high power transmission lines. Brain cancer was a
binary variable meaning the person had it or did
not.
Radiation Dose (REM)
Total population
Cases of brain cancer
Cumulative Incidence
Relative Risk
0-0.99
25,000
2,700
1.0
1-4.99
10,000
1,300
≥5
2,000
1,500
Please fill in the table above. Please show all your work. Use
the lowest radiation category (i.e....
F1 females from a cross of AABBCC to aabbcc were backcrossed to aabbcc males. In the...
F1 females from a cross of AABBCC to aabbcc were backcrossed to
aabbcc males. In the progeny of this cross there were 150 AaBbCc,
145 aabbcc, 55aabbCc, 52 AaBbcc, 31 aaBbcc, 29 AabbCc, 5 Aabbcc and
3 aaBbCc.
Is there evidence of interference? What is the coefficient of
coincidence?
The following data were obtained in a study using three separate samples to compare three different...
The following data were obtained in a study using three separate
samples to compare three different treatments. Conduct an analysis
of variance with α=0.05α=0.05 to determine whether these data are
sufficient to conclude that there are significant differences
between the treatments.
Treatment A
Treatment B
Treatment C
6
4
11
8
6
9
7
6
9
7
4
7
F-ratio =
p-value =
Conclusion:
These data do not provide evidence of a difference between the
treatments
There is a significant...
The following data were obtained in a study using three separate samples to compare three different...
The following data were obtained in a study using three separate
samples to compare three different treatments. Conduct an analysis
of variance with α=0.05α=0.05 to determine whether these data are
sufficient to conclude that there are significant differences
between the treatments.
Treatment A
Treatment B
Treatment C
22
21
22
23
19
24
21
19
24
22
21
26
F-ratio =
p-value =
Conclusion:
There is a significant difference between treatments
These data do not provide evidence of a difference...
The following data were obtained in a study using three separate samples to compare three different...
The following data were obtained in a study using three separate
samples to compare three different treatments. Conduct an analysis
of variance with α=0.05α=0.05 to determine whether these data are
sufficient to conclude that there are significant differences
between the treatments.
Treatment A
Treatment B
Treatment C
14
10
13
13
12
15
12
12
17
13
10
15
F-ratio =
p-value =
Conclusion:
These data do not provide evidence of a difference between the
treatments
There is a significant...
The following data were obtained in a study using three separate samples to compare three different...
The following data were obtained in a study using three separate
samples to compare three different treatments. Conduct an analysis
of variance with α=0.05 to determine whether these data are
sufficient to conclude that there are significant differences
between the treatments.
Treatment A
Treatment B
Treatment C
9
5
12
8
7
10
7
7
10
8
5
8
F-ratio =____________________
p-value =__________________
Conclusion:
__These data do not provide evidence of a difference between
the treatments
__There is a significant...
The following data were obtained in a study using three separate samples to compare three different...
The following data were obtained in a study using three separate
samples to compare three different treatments.
Treatment 1
Treatment 2
Treatment 3
4
3
8
3
1
4
5
4
3
1
6
6
M = 4
M = 2
M = 6
SS = 2
SS = 4
SS = 8
a. State the null and alternative hypotheses.
b. Fill in the ANOVA table below.
Source
SS
df
MS
F
Between treatments
Within treatments
Total
c. If α...
Listed below are pulse rates (beats per minute) from samples of adult males and females. Does...
Listed below are pulse rates (beats per minute) from samples
of adult males and females. Does there appear to be a difference?
Find the coefficient of variation for each of the two samples;
then compare the variation. Male 90 71 62 70 69 50 64 54 84 70 60
60 100 57 64 Female 64 81 80 70 72 85 87 84 86 89 93 72 87 78 77
The coefficient of variation for the male pulse rates is nothing%....
The following data was obtained from two independent samples for which sigma was unknown; they were...
The following data was obtained from two independent samples for
which sigma was unknown; they were selected from two normally
distributed populations.
Sample 1: 27, 39, 25, 33, 21, 35, 30, 26, 25, 31, 35, 30, 28
Sample 2: 24, 28, 23, 25, 24, 22, 29, 26, 29, 28, 19, 29
What is the point estimate for μ1- μ2?
Construct a 98% confidence interval for μ1- μ2.
Test at the 1% significance level whether the population mean
for the first...
Test the hypothesis that the following samples were obtained from population having the same medians ....
Test the hypothesis that the following samples were obtained
from population having the same medians .
sample 1: 35,42,42,30,15,31,29,29,17,21
sample 2:34,38,26,17,42,28,35,33,16,40
sample 3:17,29,30,36,41,30,31,23,38,30
sample 4:39,34,22,27,42,33,24,36,29,25
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