71
Match the following.
List-I (Moments) List-II (Constants of Binomial Distribution)
a. μ1
1. 0
b. μ2
2. npq
c. μ3
3. npq (q - p)
d. μ4
4. 3n2 p2 q2 + npq (1 - 6pq)
A)
a-1, b-4, c-2, d-3
B)
a-1, b-2, c-3, d-4
C)
a-4, b-1, c-2, d-3
D)
a-4, b-3, c-2, d-1
Answer & Solution
Answer: Option
B
72
Givenx 2 = 136, $$\sum $$dy 2 = 138, $$\sum $$dxdy = 122.
A)
+0.89
B)
-0.89
C)
+0.39
D)
+0.072
Answer & Solution
Answer: Option
A
73
A collection of information through the library reports and the research studies to build up a knowledge base as a information source for decision making is known as
A)
External information
B)
Knowledge information
C)
Planning information
D)
Control information
Answer & Solution
Answer: Option
B
74
The system processing is at a higher level, over the
A)
Application processing
B)
Accounting processing
C)
Data processing
D)
Transactional processing
Answer & Solution
Answer: Option
A
75
If an event has no chance of taking place, probability will be
A)
+1
B)
0
C)
-1
D)
Can't be known
Answer & Solution
Answer: Option
B
76
Which of the following statement is incorrect with regard to questionnaires?
A)
A well designed questionnaires improves accuracy of results
B)
Questionnaire is a part ofsecondary data collection
C)
Technical jargon and unambiguous words should not be used while preparing questionnaire
D)
None of the above
Answer & Solution
Answer: Option
B
77
160 heads and 240 tails resulted from 400 tosses of a coin. Find a 95% confidence interval for the probability of a head. Does this appear to be a fair coin?
A)
Cannot be said to be fair
B)
Can be or cannot be said to be fair
C)
Can be said to be fair
D)
Yes with +1
Answer & Solution
Answer: Option
A
78
Average sales of Bata Shoe Co's multiple shops are Rs. 12,500 per month with a standard deviation of Rs. 4050. Find out what proportion of all shops sold between Rs. 12,500 and Rs. 16,550?
A)
Rs. 12,500 and Rs. 16,550
B)
Rs. 12,000 and Rs. 16,000
C)
Rs. 13,000 and Rs. 16,000
D)
Rs. 12,000 and Rs. 13,900
Answer & Solution
Answer: Option
A
79
If binomial distribution mean is 100 and standard deviation is 4, q will be
A)
0.12
B)
0.16
C)
0.25
D)
0.4
Answer & Solution
Answer: Option
B
80
A type II error occurs when
A)
the null hypothesis is incorrectly accepted when it is false
B)
the null hypothesis is incorrectly rejected when it is true
C)
the sample mean differs from the population mean
D)
the test is biased
Answer & Solution
Answer: Option
A
