Question
In: Statistics and Probability
An experiment was conducted to evaluate the effectiveness of a treatment for tapeworm in the stomachs...
An experiment was conducted to evaluate the effectiveness of a treatment for tapeworm in the stomachs of sheep. A random sample of 24 worm-infected lambs of approximately the same age and health was randomly divided into two groups. Twelve of the lambs were injected with the drug and the remaining twelve were left untreated. After 6 months, the lambs were slaughtered and the following worm counts were recorded. Assume the counts are approximately normally distributed.
Drug-treated sheep 18, 43, 28, 50, 16, 32, 13, 35, 38, 33, 6, 7
untreated sheep 40, 54, 26, 63, 21, 37, 39, 23, 48, 58, 23, 39
(a) Construct a 98% confidence interval for the difference of the worm count in a lamb.
(b) Please perform a statistical test and see if the drug treatment reduced the mean worm count in a lamb. Use the significance level 0.05.
(c) What are your assumptions that you assumed in part (b)
Solutions
orchestra answered 1 year agoRelated Solutions
3. An experiment was conducted to evaluate the effectiveness of a treatment for tapeworm in the...
3. An experiment was conducted to evaluate the effectiveness of
a treatment for tapeworm in the stomachs of sheep. A random sample
of 24 worm-infected lambs of approximately the same age and health
was randomly divided into two groups. Twelve of the lambs were
injected with the drug and the remaining twelve were left
untreated. After 6 months, the lambs were slaughtered and the
following worm counts were recorded. Assume the counts are
approximately normally distributed.
Drug-treatedsheep 18, 43, 28,...
An experiment was conducted to evaluate the effectiveness of a treatment for tapeworm in the stomachs...
An experiment was conducted to evaluate the effectiveness of a
treatment for tapeworm in the stomachs of sheep. A random sample of
24 worm-infected lambs of approximately the same age and health was
randomly divided into two groups. Twelve of the lambs were injected
with the drug and the remaining twelve were left untreated. After 6
months, the lambs were slaughtered and the following worm counts
were recorded. Assume the counts are approximately normally
distributed.
Drug-treatedsheep 18 43 28 50...
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An experiment was conducted to see the effectiveness of two antidotes to three different doses of...
An experiment was conducted to see the effectiveness of two
antidotes to three different doses of a toxin. The antidote was
given to a different sample of participants five minutes after the
toxin. Thirty minutes later the response was measured as the
concentration in the blood. What can the researchers conclude with
an α of 0.01?
Dose
Antidote
5
10
15
1
0.6
6.5
1.1
2.1
1.5
2.4
3.1
4.1
5.9
2
1.1
1.2
1.1
1.7
1.3
1.5
2.1
3.1...
An experiment was conducted to see the effectiveness of two antidotes to three different doses of...
An experiment was conducted to see the effectiveness of two
antidotes to three different doses of a toxin. The antidote was
given to a different sample of participants five minutes after the
toxin. Thirty minutes later the response was measured as the
concentration in the blood. What can the researchers conclude with
an α of 0.05?
Dose
Antidote
5
10
15
1
0.6
1.1
1.1
2.1
1.5
2.4
3.1
4.1
5.9
2
1.1
2.5
1.1
1.7
1.3
1.5
2.1
3.1...
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