# ISS (Statistical Services) Statistics Paper I (New 2016 MCQ Pattern): Questions 459 - 462 of 472

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## Question 459

### Question

MCQ▾

Let . Using Chebyshev՚s inequality, find an upper bound on , where . Evaluate the bound for and .

### Choices

Choice (4)Response

a.

b.

c.

d.

None of the above

## Question 460

### Question

MCQ▾

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 461

### Question

MCQ▾

Which statement is correct for Mann-Whitney U Test?

Statement 1: It is a non-parametric test

Statement 2: Non-parametric 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 462

### Question

MCQ▾

A study is run to evaluate the effectiveness of an exercise program in reducing systolic blood pressure in patients with pre-hypertension (defined as a systolic blood pressure between or a diastolic blood pressure between ) . A total of patients with pre-hypertension 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 PressureBefore Exercise Program Systolic Blood PressureAfter 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