Two cards are drawn from a standard deck of 52 cards. what is the probability of drawing a 9 or a diamond?
(hint: in a standard deck of 52 cards, each card has 4 suits: hearts, diamonds, spades, and clubs.)

7⁄52 = 13.5%

17⁄52 = 32.7%

1⁄4 = 25%

4⁄13 = 30.8%

2⁄13 = 15.4%

Step-by-step explanation:

we know that

The probability of an event is the ratio of the size of the event space to the size of the sample space.  

The size of the sample space is the total number of possible outcomes  

The event space is the number of outcomes in the event you are interested in.  

so  

Let

x------> size of the event space

y-----> size of the sample space  

so

step 1

Find the probability of drawing a 9

In this problem we have

substitute

step 2

Find the probability of drawing a diamond

In this problem we have

substitute

step 3

Find the probability of drawing a 9 or a diamond

Adds the the probability of drawing a 9 plus the probability of drawing a diamond

so

answer: a

step-by-step explanation:

if xy ~ yz therefore xy would be the same length as yz

see below

step-by-step explanation:

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.