The probability that a married man drives is 0.90. If the probability that a married man and his women drive is 0.45, what is the probability that his wife drives, given that he drives?

A. 0.90 B. 0.45 C. 2 D. 0.5

Two students Jay and Veeru who do not know each other are trying to solve a difficult math's problem independently. The probability the Jay solves it is 0.56 and the probability that Veeru solves is 0.62. What is the probability that both of them solve the problem?

A. 0.2728 B. 0.1672 C. 0.3472 D. 0.5600

A pair of dice is thrown. If it is known that one die shows a 4, what is the probability that the total of both dice is less than or equal to 7?

A. 0.005 B. 0.571 C. 0.138 D. 0.545

The weights of ripe water melons of a particular variety are known to be normally distributed with a mean of 5.38kg and a standard deviation of 1.6kg. If 1800 watermelons of this variety are selected at random, approximately how many would you expect to weigh more than 7.5kg

A. 167 B. 1000 C. 734 D. 900

If the significance level is 0.10, thus with two tail test identify the corresponding Z score.

A. 1.96 B. 1.65 C. 2.37 D. 1.86

. In the regression equation Grade Total = 0.3 + 0.2Study time, what is the impact of study time on grade. A. For every one hour devoted to study, the grade total will decrease by 0.2 points B. For every one hour devoted to study, the grade total will improve by 0.2 points. C. For every one mark of grade total, study time devoted will improve by 2 hours. D. For every one hour devoted to study, the grade total will improve by 0.3 points.