When finding the probability that event A occurs in one trial and event B occurs in the next trial, ________the probability of event A by the probability of event B, but be sure that the probability of event B takes into account the ___________ of event A.

The probability that events A or B will occur, P(A or B), is given by P(A or B) = P(A) + P(B) P(A and B). If events A and B are mutually exclusive, then the rule can be simplified to ___________. It is because __________

Event A: Randomly select an elementary school student Event B: Randomly select a male Because an elementary student ___ be a male, the events are __________

 Describe the sample space of the procedure of deciding to take a single class

P (At most two children having the same gender)=

Event A: Randomly select a female student Event B: Randomly select a veteran Because a female student ___ ___be a veteran, so the events are __________

Find the weighted Mean of a class that has the following grade structure 1 Final worth 50% of the grade, Grade =90 4 Test worth 30% of the grade, Grade =89 10 HW worth 15% of the grade, Grade =88 6 quiz worth 5% of the grade , Grade = 80

What is the difference between Cluster sampling and Stratified sampling

What is the difference between Statistics and Statistic?

Find the weighted Mean of a class that has the following grade structure 1 Final worth 35% of the grade, Grade= 80 4 Test worth 25% of the grade, Grade= 75 8 HW worth 30% of the grade, Grade = 70 4 quiz worth 10% of the grade, Grade = 80