Question

Provide an example of a paired sample t-test in pharmaceutical research.

Answer #1

Paired t test is used when we need to check the difference between sample values before and after applying any treatment

Example : Say, you are drug manufacturer and you want to just if the drug can be used to reduce particular level of acid in a persons body.

So, you take 20 samples from population and check their acidity level and noted them

and then asked them to take the drug you manufactured for 3 months

After 3 months you check the samples of same 20 people for the acidity level and check if there is a significant reduction in acidity level because of your drug

Paired because for each sample we take a pair of information ( before, after )

a) Provide a real life example scenario for a paired-samples
t-test that includes sample data for N = 4 in each
condition. Do not only present the numbers; you need a reasonable
example of something that could be tested with a paired-samples
t-test.
b) Explain why your example is appropriate for a paired-samples
t-test.
c) Conduct the paired-samples t-test (two-tailed test
with an alpha of .05), showing your work for each step.

Provide an example of when a chi squared test would be used in
pharmaceutical research.

How do you determine whether or not the paired t test
is appropriate for a two-sample hypothesis? please provide numeric
example.

Provide an example of a one sample proportion test in scientific
research.

Provide an example of the following: (a) A research problem
appropriate for a non-directional test using the one-sample
z-statistic. (b) A research problem appropriate for a directional
test using the one-sample t-statistic.

How do you determine whether or not the paired t test is
appropriate for a two-sample hypothesis? Please give an
example.

What is the difference between a One sample
t-test, Unpooled t-test, Pooled
t-test, Paired t-test, and Mann
Whitney U test? How do you know when to use each test?

1) What is the difference between a paired sample and a
independent sample? Please provide an example of both. (3)

Two sample Dependent t-test (or Paired
t-test)
You want to test your hypothesis below:
There is a difference in mean test
scores between Exam 1 and Exam 2
Provide your answers in the template below the data set.
Exam 1
Exam 2
17
19
18
20
16
22
18
24
12
10
20
25
18
20
20
22
20
21
22
23
20
20
10
10
8
12
12
14
16
12
16
20
18
22
20
24
18...

Paired sample t-test:
Suppose you are interested in deciding if a particular diet is
effective in changing people's weight. You decide to run a "within
subject" experiment. You select 6 people and weigh each of them.
Two weeks and you weigh them again. For each person you compute how
much weight they lose over this period. You find : Non-diet
(subject 1-6): 0,8,3,2,-10,-1. You then put them on the diet and
weigh them again after two weeks and compute how...

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