Question

b) 196/512

c) 424/512

d) 106/512

141. The probability that a bomb will hit a target is 0.8. The probability that out of 10 bombs

dropped, exactly 4 will hit the target is _______

a) 10C4 *34

/510

b) 10C4 *44

/510

c) 10C4 *54

/510

d) 10C4 *64

/510

142. In a Poisson distribution, if n is number of trials and p is probability of success, the

mean value is given by _____

a) m =n(p-1)

b) m =np

2

c) m = p

d) m=np

143.If mean of Poisson distribution is M, then variance is given by_____

a) M

2

b) M

c) M/2

d) M(M-1)

144. If m is a mean of Poisson distribution then P(X=0) is given by_______

a) e

m

b) e

-m

c) e

d) m

e

145. The mean number of customers arriving at a bank during a 15-minute period is 10. The

probability that exactly 2 customers will arrive at the bank during a 15-minute period

is____(given that e-10=0.00005)

a) 0.015

b) 0.001

c) 0.0005

d) 0.0025

146. Given that X has a Poisson distribution with mean 8 and e-8

=0.00033546, the

probability that X=4 is ______

a) 0.054

b) 0.055

c) 0.056

d) 0.057

147. The shape of normal curve is________

a) Bell shaped

b) Circularc) Flat

d) Spiked

148. Normal distribution is symmetric about ________

a) Variance

b) Mean

c) Co variance

d) Standard deviation

149. For standard normal variate value of mean is _______

a) 0

b) Infinity

c) 1

d) Not defined

150. For standard normal variate value of standard deviation is ________

a) 0

b) 1

c) Infinity

d) Not defined

151. For Normal distribution mean, median and mode is_____

a) Not equal

b) Equal

c) Mean < median < mode

d) Mean > median >mode

152. In standard normal distribution, the value of mode is _____

a) 1

b) 0

c) Infinity

d) Not defined

153. In standard normal distribution, the value of median is _____

a) 0

b) 1

c) Infinity

d) Not defined

154. The mean= np and variance = npq for ______

a) All distributions

b) Poisson distribution

c) Binomial distribution

d) Normal distribution

155. Let X follows Normal distribution with mean 30 and standard deviation of 4, then

P(X > 37)

is _______ (where area between 0 and 1.75 is 0.4599)

a) 0.4599

b) 0.5

c) 0.0401d) 0.9599

156. Let X follows Normal distribution with mean 30 and standard deviation of 4, then

P(X>40) is ______(where area between 0 and 2.5 is 0.4938)

a) 0.4938

b) 0.9938

c) 0.5

d) 0.0062

157. Let X follows Normal distribution with mean 30 and standard deviation of 4, then

P(X<28) is ______(where area between 0 and 0.5 is 0.1915)

a) 0.3085

b) 0.1915

c) 0.6915

d) 0.5

158. Let X follows Normal distribution with mean 20 and standard deviation of 2, then

P(X<26) is ______(where area between 0 and 0.5 is 0.1915)

a) 0.4987

b) 0.0013

c) 0.9987

d) 0.5

159. Let X follows Normal distribution with mean 10 and standard deviation of 3, then

P(X<16) is ______(where area between 0 and 2 is 0.4772)

a) 0.9772

b) 0.4772

c) 0.5

d) 0.0228

160. Let X follows Normal distribution with mean 10 and standard deviation of 3, then

quartile deviation is ______

a) 1

b) 2

c) 3

d) 4

161. Let X follows Normal distribution with mean 20 and standard deviation of 2, then

Mean deviation is ______

a) 0.8

b) 0.6

c) 1.6

d) 1.8

162. Let X follows Normal distribution with mean 10 and standard deviation of 3, then

first quartile is ______

a) 8

b) 10

c) 12

d) 13163. Let X follows Normal distribution with mean 10 and standard deviation of 3, then

third quartile is ______

a) 10

b) 11

c) 12

d) 13

164. Let X follows Normal distribution with mean 10 and standard deviation of 3, then

second quartile is ______

a) 7

b) 10

c) 3

d) 13

165. Let X=12 follows Normal distribution with mean 10 and standard deviation of 2,

then standard normal variable value is ______

a) 0

b) 1

c) 2

d) 10

166. Let X=8 follows Normal distribution with mean 10 and standard deviation of 2,

then standard normal variable value is ______

a) -1

b) -2

c) 1

d) 2​

Answer 1

Answer:

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