Question

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

home / study / math / statistics and probability / statistics and probability questions and answers / a new vaccination is being used in a laboratory experiment to investigate whether it is effective. ...

Your question has been answered

Let us know if you got a helpful answer. Rate this answer

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

Expert Solution



Related 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 40 36 29 27 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...
In a study to investigate whether vitamin C is an effective treatment for colds, volunteers who...
In a study to investigate whether vitamin C is an effective treatment for colds, volunteers who caught a cold after having been exposed to various cold viruses are assigned at random to one of two groups. The 10 volunteers in the experimental group were given tablets containing 1 gram of vitamin C to be taken four times a day. The 12 volunteers in the control group were given placebo tablets. The length of time (in days) the cold lasted for...
In an experiment in my laboratory, I used siRNA to decrease the amounts of a HDAC...
In an experiment in my laboratory, I used siRNA to decrease the amounts of a HDAC that removes the H3K9ac mark. What observations would I expect in terms of changes in gene expression?
The accompanying data was obtained in an experiment to investigate whether compressive strength of concrete cylinders...
The accompanying data was obtained in an experiment to investigate whether compressive strength of concrete cylinders depends on the type of capping material used (factor A) or variability in different batches (factor B). Each number is a cell 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 =...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT