Statistics Review Ch5

The table displayed is for the members of the U.S. Senate. If a U.S. Senator was selected at random, what is the probability that the senator is a Democrat?

• .6
• .47
• .36
• .40

The table displayed is for the members of the U.S. Senate. If a U.S. Senator was selected at random, what is the probability that the senator is female?

• .17
• .60
• .83
• .40

100 people were surveyed.  54 were female, and 46 were male.  33 of the females said they were democrats, and 30 of the males said they were republicans.  If a person is randomly selected, what is the probability that its a democrat  GIVEN THAT it is a female?

• .67
• .49
• .61
• .33

100 people were surveyed.  54 were female, and 46 were male.  33 of the females said they were democrats, and 30 of the males said they were republicans.  If two people are randomly selected, what is the probability they are both males?

• .30
• .46
• .25
• .21

100 people were surveyed.  54 were female, and 46 were male.  33 of the females said they were democrats, and 30 of the males said they were republicans.  If a person is randomly selected, what is the probability a male is chosen GIVEN THAT its a republican?

• .59
• .65
• .35
• .41

The probability of a tourist visiting an area cave is .7, and of a tourist visiting a nearby park is .6.  The probability of visiting both places on the same day is .4.  The probability that a tourist visits at least one of these two places is:

• .08
• .28
• .42
• .9

Tags

CCSS.HSS.CP.B.7

A bicycle shop equips 60% of its bikes with a water bottle holder, and 55% of its bikes are equipped with a kick stand.  34% of the bikes have both features.  What is the probability that a randomly chosen bike has a kick stand GIVEN THAT it has a water bottle holder?

• 34%
• 56.7%
• 61.8%
• 81%

A recent survey suggests that 85% of college students have posted a profile on Facebook, 73% use YouTube regularly, and 66% of do both. What is the probability that a randomly selected student uses YouTube regularly given that they have a Facebook profile.

• .776
• .904
• .859
• .824

The letters that form the word MATHEMATICS are placed in a bowl. What is the probability of choosing a letter that is a vowel?

• 8/121
• 4/11
• 2/11
• 4/121

Tags

CCSS.5.NF.B.3

The collection of all possible outcomes of a random phenomenon is called

• a list

• a complement

• a sample space

• an event