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In: Statistics and Probability
A new vaccination is being used in a laboratory experiment to investigate whether it is effective....
A new vaccination is being used in a laboratory experiment to investigate whether it is effective. There are 246246 subjects in the study. Is there sufficient evidence to determine if vaccination and disease status are related?
| Vaccination Status | Diseased | Not Diseased | Total |
|---|---|---|---|
| Vaccinated | 60 | 55 | 115 |
| Not Vaccinated | 70 | 61 | 131 |
| Total | 130 | 116 | 246 |
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Question: A new vaccination is being used in a laboratory experiment to investigate whether it is effective...
A new vaccination is being used in a laboratory experiment to investigate whether it is effective. There are 246246 subjects in the study. Is there sufficient evidence to determine if vaccination and disease status are related?
| Vaccination Status | Diseased | Not Diseased | Total |
|---|---|---|---|
| Vaccinated | 60 | 55 | 115 |
| Not Vaccinated | 70 | 61 | 131 |
| Total | 130 | 116 | 246 |
A. State the null and alternate hypothesis.
B. Find the expected value for the number of subjects who are
vaccinated and are diseased.
C. Find the expected value for the number of subjects who are not
vaccinated and are not diseased.
D. Find the value of the test statistic.
E. Find the critical value of the test at the 0.01 level of
significance.
F. Make the decision to reject or fail to reject the null
hypothesis at the 0.01 level of significance.
G. State the conclusion of the hypothesis test at the 0.01 level of
significance.
Solutions
orchestra answered 2 years agoRelated Solutions
A new vaccination is being used in a laboratory experiment to investigate whether it is effective....
A new vaccination is being used in a laboratory experiment to
investigate whether it is effective. There are 288 subjects in the
study. Is there sufficient evidence to determine if vaccination and
disease status are related?
Vaccination Status
Diseased
Not Diseased
Total
Vaccinated
81
45
126
Not Vaccinated
54
108
162
Total
135
153
288
Step 1 of 8: State the null and alternative hypothesis.
Step 2 of 8: Find the expected value for the number of subjects
who are...
A new vaccination is being used in a laboratory experiment to investigate whether it is effective....
A new vaccination is being used in a laboratory experiment to
investigate whether it is effective. There are 229 subjects in the
study. Is there sufficient evidence to determine if vaccination and
disease status are related?
Vaccination Status Diseased Not
Diseased Total
Vaccinated 68 71 139
Not Vaccinated 47 43 90
Total 115 114 229
Find the expected value for the number of subjects who are
vaccinated and are diseased. Round your answer to one decimal
place.
Find the expected...
A new vaccination is being used in a laboratory experiment to investigate whether it is effective....
A new vaccination is being used in a laboratory experiment to
investigate whether it is effective. There are 282 subjects in the
study. Is there sufficient evidence to determine if vaccination and
disease status are related?
Vaccination Status Diseased Not
Diseased Total
Vaccinated 54 124 178
Not Vaccinated 71 33 104
Total 125 157 282
Step 1 of 8:
State the null and alternative hypothesis.
Step 2 of 8:
Find the expected value for the number of subjects who are...
A new vaccination is being used in a laboratory experiment to investigate whether it is effective....
A new vaccination is being used in a laboratory experiment to
investigate whether it is effective. There are 339
subjects in the study. Is there sufficient evidence to determine if
vaccination and disease status are related?
Vaccination Status Diseased Not Diseased
Total
Vaccinated 66 152 218
Not Vaccinated 84 37 121
Total 150 189 339
Step 6 of 8 : Find the critical value of the test at the 0.005
level of significance. Round your answer to three decimal
places....
. A new vaccination is being used in a laboratory experiment to investigate whether it is...
. A new vaccination is being used in a laboratory experiment to
investigate whether it is effective. There are 252 subjects in the
study. Is there sufficient evidence to determine if vaccination and
disease status are related?
Vaccination Status
Diseased Not
Diseased Total
Vaccinated
51)
54)
105)
Not Vaccinated
54)
73)
147)
Total
(125) (127) ( 252)
State the null and alternative hypothesis.
Find the value of the test statistic. Round your answer to three
decimal...
In a laboratory experiment to investigate the effect of sewage effluent on the fecundity of freshwater...
In a laboratory experiment to investigate the effect of sewage
effluent on the fecundity of freshwater shrimps (Gammarus
pulex) a number of populations of shrimps were placed into
large vessels with different concentrations of organic matter.
Females from each vessel were then dissected to see how many eggs
they were carrying.
Organic matter
(g /l)
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
Mean fecundity
45
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29
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20
15
10
10
8
(i) Plot a...
investigate whether it is effective. There are 333 subjects in the study. Is there sufficient evidence...
investigate whether it is effective. There are 333 subjects in
the study. Is there sufficient evidence to determine if vaccination
and disease status are related?
Step 3 of 8: Find the expected value for the number of subjects
who are not vaccinated and are not diseased. Round your answer to
one decimal place.
Step 4 of 8: Find the value of the test statistic. Round your
answer to three decimal places
Step 5 of 8: Find the degrees of freedom...
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total (xij.) based on K = 3 observations. Batch 1 2 3 4 5 Capping
Material 1 1844 1941 1934 1888 1799 2 1778 1850 1793 1785 1626 3
1804 1892 1890 1890 1758 In addition, ΣΣΣxijk2 = 16,806,946 and
ΣΣxij.2 =...
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