Question

19. Multiple Choice Question In a study on opposite-sex couples and work, 1000 couples have both the male and the female working. Each person was asked whether his or her salary exceeded $30,000. The following information was obtained. M M F< $30K F > $30K < $30K 430 60 > $30K 410 100 What is the probability that a female earns more than $30K given that the male earns less than $30K? A. 0.8059 B. 0.1961 C. 0.1224 D. 0.5700 E. none of the preceding

Answer 1

Solution :

19)

From given table,

P(F more than 30K | M Less than 30k) = 60 / (60 + 430) = 0.1224

20)

n = 15

$\bar x$ = = 190 / 15 = 12.667

ur <

Median is the middle most observations in the data when observations are arranged

in increasing or decreasing order of their values.

Median = 13