Question # 1

If the probability of success p = 0.4 for a parability Beronouli trial, the expression 7!/3!4! (0.4)2 (0.6)2 given the probility of getting.

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Exactly three sucoseeson in seven trials

Exactlyfour successin seven trials

Three or more successes in seven trials

Four or more successes in seven trials.

In which distribution the probabiliyt of success remains constant from triam to triail

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Hypergometric distribution

Binomiial distribution

Sampling distribution

Continuous distribution

A binomial random variable is a (an)

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Constinuous random variable

Discrete random variable

Dependent varaible

Independent variable

The variance of binomial distribution is

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np

nq

npq

pq

In which distribution the successive trials are without replacement.

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Hypergometric distribution

Bionomial dristribution

Continuous distribution

None of these

The hypergeometric experiment has propeties

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One

Three

Four

Five

Binomial distribution has parameter

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One

Two

Three

Four

In a binomial distribution

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μ =σ²

μ <σ²

μ >σ²

μ = 1σ²

Mean of hypergeometric distribution is

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mN/k

nK/N

k/nN

Nk/n

The hypergeometric distribution is used when trials are

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Dependent

Independent

Equally likely

Mutually exclusive

For a binomial distribution with n = 5 prob ( X = -2) is.

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0

Greater than zero

Less than zero

None of these

"P" or "q" can not be greater than

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1

0

2/3

1/2

The standard deviation of a binomial distribution depends on.

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Probability of success

Probabiliyt of failure

Number of trials

Both a and c

In a hypergeometric distribution N = 6, n = 2, K = 3 Then mean.

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1

2

3

4

The probability of failure is equal to.

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p

1 - q

P - 1

1 - P

The binomial distribution is negatively skewed if

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P< 1/2

P = 1/2

P > 1/2

P = 1

The hyper-geometric distribution has........... parameters.

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1

2

3

4

A fair coin tossed four times, the probability of getting four heads is.

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1

1/4

1/2

1/10

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