ISS (Statistical Services) Statistics Paper I (New 2016 MCQ Pattern): Questions 460  462 of 471
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Question number: 460
» Probability » Tchebycheff's Inequalities
Question
While tossing 100 coin let H count the number of heads. Then what is the bound probability of using Tchebycheff’s Inequality?
Choices
Choice (4)  Response  

a.  0.67 

b.  0.75 

c.  0.50 

d.  0.33 

Question number: 461
» Statistical Methods » NonParametric Tests » MannWhitney
Question
Which statement is correct for MannWhitney U Test?
Statement 1: It is a nonparametric test
Statement 2: Nonparametric test that is used to compare two sample means that come from the same population, and used to test whether two sample means are equal or not
Choices
Choice (4)  Response  

a.  Only Statement 1 is correct 

b.  Only Statement 2 is correct 

c.  Statements 1 and 2 are correct 

d.  Statements 1 and 2 are incorrect 

Question number: 462
» Statistical Methods » NonParametric Tests » Wilcoxon
Question
A study is run to evaluate the effectiveness of an exercise program in reducing systolic blood pressure in patients with prehypertension (defined as a systolic blood pressure between or a diastolic blood pressure between ). A total of patients with prehypertension enroll in the study, and their systolic blood pressures are measured. Each patient then participates in an exercise training program where they learn proper techniques and execution of a series of exercises. Patients are instructed to do the exercise program 3 times per week for 6 weeks. After 6 weeks, systolic blood pressure are again measured. The data are shown below.
Patient  Systolic Blood Pressure Before Exercise Program  Systolic Blood Pressure After Exercise Program 
1  125  118 
2  132  134 
3  138  130 
4  120  124 
5  125  105 
6  127  130 
7  136  130 
8  139  132 
9  131  123 
10  132  128 
11  135  126 
12  136  140 
13  128  135 
14  127  126 
15  130  132 
The test statistic for the Wilcoxon Signed Rank Test is
Choices
Choice (4)  Response  

a.  55 

b.  31 

c.  72 

d.  23 
