Business Statistics - Study Mode
[#136] From a well shuffled pack of 52 cards a card is selected at random. Find the probability that it is a black coloured card
Correct Answer
(A) $$frac{1}{2}$$
[#137] In a negatively skewed distribution,
Correct Answer
(C) Mode > Median > Mean
[#138] Management information system plan includes
Correct Answer
(D) All of the above
[#139] In two large populations there are 35 and 30 per cent of fair haired people. Will the differ ence disappear at 5% level of significance, if samples of 1500 and 1000 are respectively taken from the two populations?
Correct Answer
(A) Difference is significant
[#140] Given, N = 15, $$overline { ext{X}} $$ = 25, $$overline { ext{Y}} $$ = 18, $$sum $$d 2 x = 136, $$sum $$d 2 y = 138, $$sum $$dxdy = 122. Calculate the correlation coefficient.
Correct Answer
(B) 0.89