Question

A certain stimulus administered to each of 12 patients resulted in the following increase in blood pressure: 5.2. 8.-13.0.- 2.1.5.0.4 and 6. Can it be concluded that the stimulus. will in general be accompanied by an increase in blood pressure? (For v 11.1002-21)​

Answer 1

Answer:

100%=18000rs

5%=?

5×18000÷100

=180×5

=900=900

=900

Answer 2

Answer:

Use of Paired T Test is suggested for the given question

Let's take the increase in Blood Pressure as d (difference)

Increase in Blood Pressure (d)

5

2

8

-1

3

0

-2

1

5

0

4

6

Total: 31

d²

25

4

64

1

9

0

4

1

35

0

16

36

Total: 185

n = 12

t = d bar / (s.d÷√n)

d bar = Σd/n

s.d = √Σd²/n - (Σd/n)²

d bar = 31/12 = 2.58

s.d = √185/12 - (31/12)²

s.d = √15.4166 - (2.5833)²

s.d = 2.9568

Substitute the values in the formula

t = 2.58 / (2.9568÷√12)

t = 2.58 / (2.9568÷3.4641)

t = 2.58 / 0.8535

t = 3.0228

df = n-1 = 12-1 = 11

Table Value = 1.796 @5% of significance (in a one-tailed test)

Calculated Value 3.0228 > 1.796 Table Value

H0 or Null Hypothesis is Rejected