Question # 1

E(X ± Y) =..............

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E(X) + E(Y)

E(X) - E (Y)

E(x) ± E (Y)

None of these

The range of probability is between

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0 to 2

-1 to +1

0 to 8

0 to 1

a measure of the chance that an uncertain event will occur.

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An experiment

An event

A probability

A trail

The probability of red card out of 52 cards is.

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1/4

1/2

4/52

zero

Coefficient of variation (C.V) is given below

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Mean /S.D x10

Mean/S.D x 100

S.D/Mean x 100

S.D/ Mean

Waht is the probability that a ball drawn at random from the bag is.

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0.1

0.4

1.0

Cannot be determined from given information

The probability of drawan any one spade card is.

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1/32

1/18

1/4

4/13

Var (3x + 2)

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3 Var(X) + 2

3 Var X

9 var (x) + 2

9 var (x)

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

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y₁ = y₂

Y₁ > y₂

None of these

F(y₁) ≤ F(y₂) if

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y₁= y₂

Y₁>y₂

y₁≤y₂

y≥1/2

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4/10

2/10

1/10

0

When two dice are rolled, the numebr of possible sample points is.

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6

12

36

48

When a die and a coin are rolled together all possible outcomes are.

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2

6

12

36

Variance σ²is equal to E(y²) - --------------------

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E(y)

[E(y)]²

E(y)²

E² (y)

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.

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)

A set of numerical values assigned to a sample space is called.

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Random sample

Random variable

Random numbers

Random experiment

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Statistics Ics Part 1 Chapter 7 Online Test MCQs With Answers

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