Question # 1

The formula used to estimate a parameter is called:

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Estimate

Estimation

Bais

Estimator

The normal distribution curve is:

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U Shaped

I shaped

Uniform

Bell shaped

The probability of type-1 error is denoted by

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a

1- a

b

1- b

In unimodal distribution If mode is less than mean then distribution is

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Symmetrical

Normal

Positively skewed

Negatively skewed

Movement in secular trend

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Smooth

Steady

Regular

All

If right tail is longer than the left tail,then distribution is called:

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Negatively skewed

Positively skewed

Symmetrical

None of these

If a and b are two constants then var (a+ bx) =

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± b var (x)

Var (a) ± var (x)

b² var (x)

(a±b) var (x)

A fair coin is tossed four times the prob.of getting four heads is:

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1/4

1/2

1/16

1

If critical region is located on both sides it is called

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One tailed test

One sided test

Two tailed test

Not exists

The range of constant "A" is equal to

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Zero

A

One

None of these

The normal distribution is ..........distribution

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Positively skewed

Negatively skewed

Symmetrical

Meso kurtic

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