+ 4. A census was conducted to get the total weekly incomes of families in Village A and B an
table below summarised the frequency distribution.
Income (RM)
Number of families
Number of families
in Village A
in Village B
60 to less than 100
5
10
100 to less than 120
45
120 to less than 140
48
25
140 to less than 180
37
41
180 to less than 240
12
34
Calculate the mean and standard deviation of weekly income in Village A and Village B

If you had $1,900,000, how many days would it take you to spend all if you spent $1 a second. (there are 86,400 seconds in a day)

Suppose that 3% of all athletes are using the endurance-enhancing hormone epo (you should be able to simply compute the percentage of all athletes that are not using epo). for our purposes, a “positive” test result is one that indicates presence of epo in an athlete’s bloodstream. the probability of a positive result, given the presence of epo is .99. the probability of a negative result, when epo is not present, is .90. what is the probability that a randomly selected athlete tests positive for epo? 0.0297

The equation |pl = 2 represents the total number of points that can be earned or lost during one turn of a game. which best describes how many points can be earned or lost during one turn? o o -2 2 oor 2 -2 or 2 o