3. If X is a random variable normally distributed with mean u and
variance s2, then the mean deviation about mean is given by β
a)1/2Ο, b) 2/Ο, c) Ο/2Ο, d) 2Ο
variance s2, then the mean deviation about mean is given by β
a)1/2Ο, b) 2/Ο, c) Ο/2Ο, d) 2Ο
Anonymous Quiz
15%
A
42%
B
31%
C
12%
D
4. The level of significance is the probability of committing β
a) Type I error,
b) Type II error, c) Standard error, d) Probable error.
a) Type I error,
b) Type II error, c) Standard error, d) Probable error.
Anonymous Quiz
29%
A
27%
B
35%
C
10%
D
5. Which of the following tests is used to test a hypothesis about the
mean of a univariate normal distribution with unknown variance?
a) Normal test, b) Studentβs test, c) Paired t-test, d) Chi-square test.
mean of a univariate normal distribution with unknown variance?
a) Normal test, b) Studentβs test, c) Paired t-test, d) Chi-square test.
Anonymous Quiz
22%
A
25%
B
22%
C
32%
D
7. βTwo or more events are called mutually exclusive, if the
occurrence of any one of them excludes the occurrence of the otherβ.
This statement is given by β a) M S Roy, b) Morris Hamburg, c) Murray Spiegel, d) Emile Bovel.
occurrence of any one of them excludes the occurrence of the otherβ.
This statement is given by β a) M S Roy, b) Morris Hamburg, c) Murray Spiegel, d) Emile Bovel.
Anonymous Quiz
18%
A
32%
B
42%
C
9%
D
6. Mean and variance of Binomial distribution are β
a) m and s2,
b) m and nq, c) m and np, d) np and npq.
a) m and s2,
b) m and nq, c) m and np, d) np and npq.
Anonymous Quiz
21%
A
17%
B
35%
C
27%
D
8. The probability of the happening of anyone of the several equally
likely events is the ratio of the number of events favourable to it to the
total number of β a) Possible errors, b) Impossible errors, c) Possible events, d) all of these. .
likely events is the ratio of the number of events favourable to it to the
total number of β a) Possible errors, b) Impossible errors, c) Possible events, d) all of these. .
Anonymous Quiz
20%
A
29%
B
30%
C
21%
D
10. β¦β¦β¦β¦β¦β¦.. is an act or process which leads to a single definite outcome.
a) Simple experiment,
b) Exhaustive event, c) Sampling, d) Manipulation
a) Simple experiment,
b) Exhaustive event, c) Sampling, d) Manipulation
Anonymous Quiz
20%
A
33%
B
35%
C
11%
D
9. The β¦β¦β¦β¦β¦β¦β¦β¦β¦ that one of the several mutually exclusive events X1, X2, X3, β¦β¦β¦.., Xn, shall happen is the sum of the probabilities of the individual events.
a) Regression analysis,
b) Correlation analysis, c) Probability, d) Error.
a) Regression analysis,
b) Correlation analysis, c) Probability, d) Error.
Anonymous Quiz
34%
A
28%
B
30%
C
8%
D
Q. 1 Communications bandwidth that has the highest capacity and is used by microwave, cable and fibre optics lines is known as:
Anonymous Quiz
27%
hyper-link
47%
broadband
17%
bus width
9%
carrier wave
Q. 2 An electronic bill board that has a short text or graphical advertising message is referred to as:
Anonymous Quiz
40%
bulletin
15%
strap
29%
bridge line
16%
banner
Q. 3 Which of the following is not the characteristic of a Computer?
Anonymous Quiz
10%
computer is an electrical machine
44%
computer cannot think at its own
32%
computer processes information error free
15%
computer can hold data for any length of time
Q. 4 Bitumen is obtained from...
Anonymous Quiz
30%
Forests and Plants
18%
Kerosene oil
30%
Crude oil
22%
underground mines
Q. 5 Malaria is caused by:
Anonymous Quiz
33%
bacterial infection
26%
viral infection
32%
parasitic infection
9%
fungal infection
Q. 6 The cloudy nights are warmer compared to clear nights (without clouds) during winter days. This is because:
Anonymous Quiz
13%
clouds radiate heat towards the earth
29%
clouds prevent cold wave from the sky, descend on earth
35%
clouds prevent escaping of the heat radiation from the earth
23%
clouds being at great heights from earth absorb heat from the sun and send towards the earth
Q. 7 Largest soil group of India is:
Anonymous Quiz
22%
Red soil
42%
Black soil
21%
Sandy soil
14%
Mountain soil
Q. 8 Main pollutant of the Indian coastal water is
Anonymous Quiz
13%
oil spill
31%
municipal sewage
49%
industrial effluents
8%
aerosols
Q. 9 Human ear is most sensitive to noise in the following frequency ranges:
Anonymous Quiz
11%
1-2 KHz
46%
100-500 Hz
32%
10-12 KHz
11%
13-16 KHz
Q. 10 Which species of chromium is toxic in water:
Anonymous Quiz
21%
Cr+2
33%
Cr+3
31%
Cr + 6
15%
Cr is non-toxic element