Question # 1

F(y₁) ≤ F(y₂) if

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y₁= y₂

Y₁>y₂

y₁≤y₂

y≥1/2

What is the probability that a value chosen at random from a particular population is larger than the median of the popultion.

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0.25

0.5

1.0

0.67

Var (KY) = ......................

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KY

K² Var(Y)

K²Var (Y)

None of these

Which one is not an example of random experiments.

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A coin is tossed and the outcome is either a head or a tail

A six sided aid is rolled

All medical insurance clams received by a company in a given year.

Some one of person will be admitted to a hospital emergency room during any hour.

The probability of an impossible event is.

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Positive

Zero

Negative

1

Tossing two dice possble sampes are.

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2

6

12

36

The probability of drawan any one spade card is.

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1/32

1/18

1/4

4/13

If x and y are independent random variables, then E(xy)

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E(xy)

xE(y)

E(x)

E(x)E(y)

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4/10

2/10

1/10

0

When a pair of dice is rolled, the sum of upperemost dots vary from.

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0 to 10

1 to 11

2 to 19

2 to 12

The simplest form of the continuous distribution is the.

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Skewed distribution

Kurtic distribution

Binomial distribution

Uniform distribution

A random variable is also called.

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Chance variable

Stochastic variable

Discrete variable

Both A and B

Hourly temperature recorded by weather brave is the example of:

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Discrete variable

Continuous variable

Qualitative

Both A and B

The probability of continuous random variable at x = a is__________.

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One

Zero

Between

More then one

Probability distribution of a continuous random variable can be presented by

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tabular form

Formula

Curve

None of these

For two independent random variables, Var(x) = 14 and Var(Y ) = 5, then var (X-y) is equal to.

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9

70

19

None of these

Var (3x+2)

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3Var(x) + 2

9Var(x) +2

Var (x) + 0

3Var (X)

If a Vann diagram is drawn for events A and B which are mutually exclusive, which f the folloiwng would always be true of A and B.

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Theire parts of the rectangle will overlap

Their parts fo the rectangle will be equal in area

Their parts of the rectangle will not overlap

None of these

probability distribution of a continuous random variable can be presented by.

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Formula

Curve

Tabular form

None of these

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