Match the following
List-I (Computer based information system) List-II (year)
(A) Management Information systems (MIS) 1. 1971
(B) Decision Support System (DSS) 2. 1964
(C) Office Automation (OA) 3. 1990
(D) Artificial Intelligence (AI)
A. | (A) (B) (C) (D) 2 1 2 3 |
B. | (A) (B) (C) (D) 1 2 2 3 |
C. | (A) (B) (C) (D) 3 1 2 2 |
D. | (A) (B) (C) (D) 1 2 3 2 |
Option: A Explanation : Click on Discuss to view users comments. |
Given
N = 15, X¯ = 25, Y¯ = 18, Σd_{x}2 = 136, Σd_{y}2 = 138, Σdxdy = 122.
There correlation will be
A. | +0.89 |
B. | -0.89 |
C. | +0.39 |
D. | +0.072 |
Option: A Explanation :
= 122/136.935 =+0.89 Hence the answer is (a) Click on Discuss to view users comments. |
In a sample having 23 pairs of observations, the correlation coefficient is 0.52 and in another sample having 28 observations, the correlation coefficient is 0.71. Is there significant difference between the two sample coefficients?
A. | 5% level is not proper |
B. | Difference is not significant |
C. | Difference is significant |
D. | 95% level is significant |
Option: B Explanation : N_{1} = 23, r_{1} = 0.52 N_{2} = 28, r_{2} = 0.71 Z_{1} for r_{1} = 0.52 (By reference to table) = 0.58 Z_{2} for r_{2} = 0.71 (By reference to table) = 0.89
The difference is not significant at 5% level of significant. Hence the answers (b).
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What is the probability of selecting a king from a Pinochle desk?
A. | 1/6 |
B. | 1/4 |
C. | 1/9 |
D. | 1/54 |
Option: A Explanation : A Pinochle deck consists of 2 = Aces 2 = Kings 2 = Queens 2 = Jacks 2 = Tens and 2 = Nines of each suit There are no card of lower than value. Total number of cases. = Total no. of cards (48). Hence the answer is (a). Click on Discuss to view users comments. |
The average number of customers per minute arriving at a super bazaar is 2. Using the Poisson distribution, find the probability that during one particular minute exactly three customers will arrive
A. | 0.36 |
B. | 0.180 |
C. | 0.120 |
D. | 0.130 |
Option: B Explanation :
Hence the answer is (b). Click on Discuss to view users comments. |