Investigation of anti-body levels in a group of 22 patients before and after injection of an immunoglobulin produced the datasets provided:patientprepost13.73.724.64.434.93.844.84.154.14.863.93.874.15.884.54.895.24.3103.64.5114.14.5123.65.81335.1144.86.1154.63.3163.65.5173.64.9183.25.7194.73.3203.36.1(a) Write a null and alternate hypothesis set to test if there is evidence for post-injection anti-bodylevels to be greater than pre-injection levels.(b) Test your hypothesis using the appropriate hypothesis test and significance level.(c) Compute a 99% confidence interval for the difference between pre and post-injection antibody levels.

Name: Investigation of anti-body levels in a group of 22 patients before and
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Description: Investigation of anti-body levels in a group of 22 patients before and after injection of an immunoglobulin produced the datasets provided:patientprepost13.73.724.64.434.93.844.84.154.14.863.93.874.15.884.54.895.24.3103.64.5114.14.5123.65.81335.1144.

Given, The data set for pre and post injuction is given. n = 20 To find, (a) Write a null and…

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Investigation of anti-body levels in a group of 22 patients before and after injection of an immunoglobulin produced the datasets provided:

patient	pre	post
1	3.7	3.7
2	4.6	4.4
3	4.9	3.8
4	4.8	4.1
5	4.1	4.8
6	3.9	3.8
7	4.1	5.8
8	4.5	4.8
9	5.2	4.3
10	3.6	4.5
11	4.1	4.5
12	3.6	5.8
13	3	5.1
14	4.8	6.1
15	4.6	3.3
16	3.6	5.5
17	3.6	4.9
18	3.2	5.7
19	4.7	3.3
20	3.3	6.1

(a) Write a null and alternate hypothesis set to test if there is evidence for post-injection anti-body
levels to be greater than pre-injection levels.
(b) Test your hypothesis using the appropriate hypothesis test and significance level.
(c) Compute a 99% confidence interval for the difference between pre and post-injection antibody levels.

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