Question # 1

Which of the following cannot be null hypothesis:

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qΣ q

q³ q

q = q

q¹ q

If E (X) = 1.6 and E (Y) = 0.4, then E (X - Y) =--------------

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1.2

-0.2

2.0

None of these

A random variable is of types:

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3

2

1

4

Rejecting H_o if H_o is true is

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No error

Type-I error

Type-II error

Standard error

A variable which takes measurable values is called a

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Constant

Discrete variable

Continuous variable

Qualitative variable

The alternative hypothesis always contains the sign of

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Equality

Inequality

Ratio

Proportion

If the null hypothesis is true the probability error is identified by what name

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b

1- b

a

1- a

The sum of the squares of deviation is least form:

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Mean

Mode

Median

Harmonic mean

The probability of type-1 error is denoted by

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a

1- a

b

1- b

The hypergeometric distribution has parameters:

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2

3

4

None of these

If y = 5x + 10, then mean deviation of y is

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5 mean deviation (x)

25 mean deviation (x)

5 mean deviation (x) + 10

None of them

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NAT I General Science Statistics MCQs With Answers

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