180 students in a tenth grade high school class take a survey about which video game consoles they own. 80
students answer that one of their consoles is a Playstation, 90 answer that one of their consoles is an Xbox. Out
of these, there are 30 who have both systems.
Let A be the event that a randomly selected student in the class has a Playstation and B be the event that the
student has an Xbox. Based on this information, answer the following questions.
What is P(A), the probability that a randomly selected student has a Playstation?
What is PB), the probability that a randomly selected student has an Xbox?
What is P(A and B), the probability that a randomly selected student has a Playstation and an Xbox?
What is PB A), the conditional probability that a randomly selected student has an Xbox given that he or
she has a Playstation?
Is P(B A) = P(B)? Are the events A and B independent?
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7.   there are 10 data points in the set.   the middle point is between 5 and 6.   the middle point in the top half is 8   and the middle point in the bottom half is 3. to find the iqr , take point 8 and subtract point 3

mid term   point 8 = 100   point 3 = 88

iqr = 100-88 = 12

final   point 8 = 93   point 3 = 78

iqr = 93 - 78 = 15

the final has the greatest iqr

6.   b - there is a high data value that causes the data set to be asymmetrical for the males: the data for males are high and asymmetrical .   there is an outlier for the males that skews the data

5.   the   iqr is a better measure of spread for the movies and basketball games.   since the basketball game has an outlier, we do not want to use standard deviation for measurement.  

3.   the exam median is much higher than the class median.   the median line is farther to the right on the exams

2.   there is no way to tell what the means are from the box and whisker plots.  

the first one, all those points on the line just make a strait line.

it has changed from the width and the height.

step-by-step explanation: