MTH302 Business Mathematics & Statistics Online Quiz No 5 Due Date: Jul 11, 2014

[vuassignments]

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MTH302 Business Mathematics & Statistics Online Quiz No 5 Due Date: Jul 11, 2014

Poisson probabilty density function has ____ parameter(s)

Select correct option:



0

1

2

None of these.


Question # 2 of 10 ( Start time: 09:46:54 PM ) Total Marks: 1

In the excel formulation for Poisson distribution i-e "POISSON(x,mean,cumulative)", ‘x’ is the

Select correct option:


Expected numeric value

Logical value that determines the form of the probability distribution returned

Number of events over a specific time

Discrete non-random variable

Sponsored Links


Question # 3 of 10 ( Start time: 09:47:59 PM ) Total Marks: 1

An automatic production line breaks down every 2 hours.Special production requires uninterrupted operation for 8 hours.What is the probabilty that this can be achieved.

Select correct option:


0.312

0.021

0.0183

None of these.


Question # 4 of 10 ( Start time: 09:48:27 PM ) Total Marks: 1

The successive binomial trials are assumed to be

Select correct option:


Independent

Dependent

May be independent

None of these


Question # 5 of 10 ( Start time: 09:48:48 PM ) Total Marks: 1

When two dice are rolled together, the outcomes on the faces are independent.

Select correct option:

True

False


Question # 6 of 10 ( Start time: 09:49:04 PM ) Total Marks: 1

The number of false fire alarms in a suburb of London on averages 4 per day. Assuming that a Poisson distribution is appropriate, the probability that 3 false alarms will occur on a given day is given by

Select correct option:

P(X=3 ) = (4^3e^-3)/4!

P(X=3 ) =1- (4^3e^-3)/3!

P(X=3 ) = (4^3e^-4)/3

P(X=3 ) =1- (4^3e^-4)/4!

Question # 7 of 10 ( Start time: 09:49:48 PM ) Total Marks: 1

The Excel command “=BINOMDIST( 7, 4, 0.5, FALSE)” gives an error of #NUM. The reason is that number of successes is 7 which are greater than the trials which are 4.
Select correct option:

True

False

Question # 8 of 10 ( Start time: 09:50:08 PM ) Total Marks: 1

For normal distribution the probability of an event is zero if and only if value of ‘z’

Select correct option:


Greater than 3

Less than 3

Equal to 3

None of these

Question # 9 of 10 ( Start time: 09:50:31 PM ) Total Marks: 1

What is not a characteristic of poisson distribution.

Select correct option:

Either/or situation.

mean number of successes per unit,m,known and fixed.

p,chance unknown and large

None of these.

Question # 10 of 10 ( Start time: 09:50:43 PM ) Total Marks: 1

In the normal distribution curve, peak of the bell-shaped curve gives

Select correct option:

Standard deviation

Variance

Mean

Frequency

[vuassignments]

Q. The square of the correlation coefficient is called the

coefficient of determination
variance
covariance
big R
Q. nCn =___________

nC0

2

3

None of these

Q. The moving averages of the Prices 90,70,30,110 are

63.33, 70

73.33, 80

45.45, 68

65.50, 75

Q. The sum of squares of the deviations of the observed values from the regression line is

zero

least or minimum

maximum

none of these

Q. In a simple linear regression analysis, the correlation coefficient (r) and the slope (b1) have the same sign.

Always

Sometimes

Never

Most of the times

Q. A pattern of variation of a time series that repeats every year is called:

Cyclical

Seasonal

Trend

Secular

Q. An arrangement of all or some of a set of objects in a definite order is called

Combination

Permutation

Q. The square of the correlation coefficient is called the

coefficient of determination

variance

covariance

big R