Addition theorem states that if two events A and B are mutually exclusive the probability of occurrence of either A or B is given by
A. P(A) + P(B)
B. P(A ∪ B) + P(A ∩ B)
C. P(A) - P(B)
D. None of these
Select an option to see the answer and solution.
Given
1. One-to-one
2. One-to-many
3. Many-to-many
The above relation indicates to the
A. E-R diagram
B. Data analysis
C. Database system
D. Operation
Select an option to see the answer and solution.
Binomial distribution was developed by
A. Marshall
B. Fisher
C. Jacob Bernoulli
D. Bordington
Select an option to see the answer and solution.
An experimenter tests the hypothesis that physical exercise helps people's mood (makes them happier). Subjects in the ex perimental group participate on Monday and Tuesday and those in the control an Wednesday and Thursday. What is the extraneous (confounding) variable?
A. The exercise
B. The mood (degree of happiness)
C. The hypothesis
D. Day of the week
Select an option to see the answer and solution.
Which of the following measures of central tendency is used when the data changes over a period of time?
A. Arithmetic Mean
B. Weighted Average Mean
C. Geometric Mean
D. None of the above
Select an option to see the answer and solution.
Bessel's correction's
Select an option to see the answer and solution.
Which of the folIowing represents primary data?
A. A transcript from a group
B. A report on specific industrial sector
C. A report on qualitative focus groups
D. The financial statements of a company
Select an option to see the answer and solution.
Match the following
List-I (Types of system)
List-II (Elements)
a. Data processing
1. Sales
b. Transaction
2. Process processing management
c. Functional system
3. Focus on computing
d. Integrated
4. Transaction execution
A. a-1, b-4, c-3, d-2
B. a-3, b-4, c-1, d-2
C. a-1, b-2, c-3, d-4
D. a-1, b-3, c-2, d-4
Select an option to see the answer and solution.
Given
What will be AB in above diagram as per probability theory?
A. Simple and compound events
B. Compound events
C. Simple events
D. Errors
Select an option to see the answer and solution.
Suppose that in a box of 80 bulbs packed, the mean number of defects per box is 0.3. What percent of bulbs will have no mistake?
Select an option to see the answer and solution.
Which of the following is possible in a chi-square goodness of fit test?
A. The chi-square statistic is zero
B. The observed counts are not whole number
C. The probabilities specified in the null hypothesis sum to less than one
D. The degree of freedom are larger than the number of categories
Select an option to see the answer and solution.
Which of the following statement is/are true?
A. A typical application is of putting the dealer distributor network on the network of the organisation for a direct interaction
B. The communication is performed through three activities, viz., entry, transmission and delivery
C. Message switching is an alternative to circuit switching communication
D. All of the above
Select an option to see the answer and solution.
If a decision can be based on a rule, method or even guidelines it is called
A. Programmed decision
B. Alternatives decision
C. Non-programmed decision
D. All of the above
Select an option to see the answer and solution.
Which one is not objective of MIS
A. to provide requisite information support for managerial functions within the organisation
B. to make available, right information at the right place at the right time at the lowest cost
C. to test hypothesis related with popula tion mean
D. to ensure that wrong and unwanted information is not generated, the condition of data overload is avoided
Select an option to see the answer and solution.
Information technology strategic decision includes
A. Management style and culture
B. Mission critical applications
C. Business goal
D. All of the above
Select an option to see the answer and solution.
The transaction is processed for
A. Adherence to business rules, correctness and consistency of data value and for validity of transaction for acceptance
B. Checking the value of data
C. Confirming the character, structure and presentation vis-a-vis data design
D. Adherence to human resources
Select an option to see the answer and solution.
Which of the following is/are not the basic feature of ERP?
A. Screen based flow control
B. Diagnostic functions
C. Auditing
D. Command Language
Select an option to see the answer and solution.
Which of the following is a probability method?
A. Ouota
B. Judgement
C. Simple random
D. Convenience
Select an option to see the answer and solution.
Which of the following is/are part of decision support system?
A. Information analysis system
B. Data analysis system
C. Status inquiry system
D. All of the above
Select an option to see the answer and solution.
If A and B are mutually exclusive events P(AB) =
A. P(A) + P(B)
B. zero
C. P(A) × P(B)
D. None of these
Select an option to see the answer and solution.