Question # 1

The probability of red card out of 52 cards is.

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1/4

1/2

4/52

zero

F(-∞) is always equal to.

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Zero

One

Two

Negative one

The probability of getting an odd number when a balanced die is rolled is.

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1/2

1/3

1/4

1/6

The coins are tossed, the porbability of two tails is euql to.

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1/2

1/4

3/4

1

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

If the random variable x denotes the number of heads when three distinct coins are tossed, the x assumes values

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0, 1, 2, 3

1, 3, 3, 1

1, 2, 3

None of these

Events with equal probabilities are called.

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Mutually exclusive events

Exhauative events

Eqauily likely events

Simple events

Which of the following is suitable for discrete probability distribution.

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Frequency polygon

Probability

Ogive

Histogram

A probability function is _________ function.

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Mathematical

Mathematical expectation

Converges

None of these

If a is a constant then E(a) is equal to

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a

Square of a

Zero

2a

The simplest form of the continues distribution is the

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Skewed distribution

Kurtic distribution

Binomial distribution

Uniform distribution

When two coins are tossed simultaneously, P (one head ) is.

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1/2

1/4

3/4

1.0

If one event is unaffected by the outcome of another event, the two events are said to be

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Dependent

Independent

Mutually exclusive

Both b and c

Var (3x+2)

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3Var(x) + 2

9Var(x) +2

Var (x) + 0

3Var (X)

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

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E(XY)

xE(y)

E(XY)

E(X) . E(Y)

The simple probability of occurrence of an event in called the.

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Joint probability

Conditional probability

Marginal probability

Subjective probability

F(y₁) ≤ F(y₂) if

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y₁= y₂

Y₁>y₂

y₁≤y₂

y≥1/2

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Statistics Ics Part 1 Chapter 7 Online Test MCQs With Answers

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