Section-I State whether the following statements are True or False. (1×6 = 6) Wh

Question

Section-I State whether the following statements are True or False. (1×6 = 6)
When we want to use one variable to predict another and use the equation , we use the technique known as multiple regression. True False
When using regression, an error is also called residual. True False
Most systems use the queue discipline known as FIFO rule. True False
In a multichannel, single-phase queuing system, the arrival will pass through at least two different service facilities. True False

In an LP problem, at least one corner point must be an optimal solution if an optimal solution exists. True False
In a linear program, the constraints must be linear, but the objective function may be non-linear. True False

Section-II Circle/tick the right answer from the answers given below. (1×6 = 6)
1.In regression model, if every sample point is on regression line (all errors are 0), then A)The correlation coefficient would be 0. B)The correlation coefficient would be or 1. C)The coefficient of determination would be . D)The coefficient of determination would be 0.
2.A graph of the sample points that will be used to develop a regression line is called A)A sample graph B)A regression diagram C)A scatter diagram D)A regression plot
3.The utilization factor for a system is defined as A)Mean no. of people served divided by the mean no. of arrivals per time period B)The average time a customer spends waiting in a queue C)Proportion of the time the service facilities are in use D)The percentage of idle time
4.A queuing system described as M/D/2 would have A)Exponential service times B)Two queues C)Constant service times D)Constant arrival rates
5.A feasible solution to an LPP A)Must satisfy all of the problem’s constraints simultaneously B)Need not satisfy all of the constraints, only some of them C)Must be a corner point of the feasible region D)Must give the maximum possible profit
6.A graphical method should only be used to solve an LPP when A)There are only two constraints B)There are more than two constraints C)There are only two variables D)There are more than two variables





Section-I State whether the following statements are True or False. (1×6 = 6)
When we want to use one variable to predict another and use the equation , we use the technique known as multiple regression. True False
When using regression, an error is also called residual. True False
Most systems use the queue discipline known as FIFO rule. True False
In a multichannel, single-phase queuing system, the arrival will pass through at least two different service facilities. True False

In an LP problem, at least one corner point must be an optimal solution if an optimal solution exists. True False
In a linear program, the constraints must be linear, but the objective function may be non-linear. True False

Section-II Circle/tick the right answer from the answers given below. (1×6 = 6)
1.In regression model, if every sample point is on regression line (all errors are 0), then A)The correlation coefficient would be 0. B)The correlation coefficient would be or 1. C)The coefficient of determination would be . D)The coefficient of determination would be 0.
2.A graph of the sample points that will be used to develop a regression line is called A)A sample graph B)A regression diagram C)A scatter diagram D)A regression plot
3.The utilization factor for a system is defined as A)Mean no. of people served divided by the mean no. of arrivals per time period B)The average time a customer spends waiting in a queue C)Proportion of the time the service facilities are in use D)The percentage of idle time
4.A queuing system described as M/D/2 would have A)Exponential service times B)Two queues C)Constant service times D)Constant arrival rates
5.A feasible solution to an LPP A)Must satisfy all of the problem’s constraints simultaneously B)Need not satisfy all of the constraints, only some of them C)Must be a corner point of the feasible region D)Must give the maximum possible profit
6.A graphical method should only be used to solve an LPP when A)There are only two constraints B)There are more than two constraints C)There are only two variables D)There are more than two variables





Section-I State whether the following statements are True or False. (1×6 = 6)
When we want to use one variable to predict another and use the equation , we use the technique known as multiple regression. True False
When using regression, an error is also called residual. True False
Most systems use the queue discipline known as FIFO rule. True False
In a multichannel, single-phase queuing system, the arrival will pass through at least two different service facilities. True False

In an LP problem, at least one corner point must be an optimal solution if an optimal solution exists. True False
In a linear program, the constraints must be linear, but the objective function may be non-linear. True False

Section-II Circle/tick the right answer from the answers given below. (1×6 = 6)
1.In regression model, if every sample point is on regression line (all errors are 0), then A)The correlation coefficient would be 0. B)The correlation coefficient would be or 1. C)The coefficient of determination would be . D)The coefficient of determination would be 0.
2.A graph of the sample points that will be used to develop a regression line is called A)A sample graph B)A regression diagram C)A scatter diagram D)A regression plot
3.The utilization factor for a system is defined as A)Mean no. of people served divided by the mean no. of arrivals per time period B)The average time a customer spends waiting in a queue C)Proportion of the time the service facilities are in use D)The percentage of idle time
4.A queuing system described as M/D/2 would have A)Exponential service times B)Two queues C)Constant service times D)Constant arrival rates
5.A feasible solution to an LPP A)Must satisfy all of the problem’s constraints simultaneously B)Need not satisfy all of the constraints, only some of them C)Must be a corner point of the feasible region D)Must give the maximum possible profit
6.A graphical method should only be used to solve an LPP when A)There are only two constraints B)There are more than two constraints C)There are only two variables D)There are more than two variables

Explanation / Answer

Answers:

Section I

1.When we want to use one variable to predict another and use the equation , we use the technique known as multiple regression.

B)The correlation coefficient would be -1 or 1.

2.A graph of the sample points that will be used to develop a regression line is called

C)A scatter diagram

3.The utilization factor for a system is defined as

C)Proportion of the time the service facilities are in use

4.A queuing system described as M/D/2 would have

C)Constant service times

5.A feasible solution to an LPP

A)Must satisfy all of the problem’s constraints simultaneously

6.A graphical method should only be used to solve an LPP when

C)There are only two variables

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