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WorksheetsUnit 4 Review - Statistics
Total questions: 23
Worksheet time: 2hrs 55mins
Which of the following are true about probabilities?
All probabilities in a sample space must add to 1.
Each probability in a sample space must be between 0 and 1.
To find probabilities you divide a larger number by a smaller number.
The probability of something not happening is 1 - the probability of the event happening.
1 is 100%
If we observe more and more repetitions of any chance process, the proportion of times that a specific outcome occurs approaches its probability. This is the . . .
law of large numbers.
1.5 IQR rule.
central limit theorem.
law of large samples.
If two events cannot occur at the same time, they are . . .
mutually exclusive.
independent.
complements.
enemies.
The table shows the probabilities of people leaving their house at particular times for car trips. So there is a 4% chance that an American family will leave their house between 10 PM and 12:59 PM.
What probability should replace the ? in the table?
0.782
0.218
0.318
0.682
The table shows the probabilities of people leaving their house at particular times for car trips. So there is a 4% chance that an American family will leave their house between 10 PM and 12:59 PM.
What is the probability that a trip did not begin between 9 AM and 12:59 PM?
0.234
0.766
0.548
0.682
The table shows the probabilities of people leaving their house at particular times for car trips. So there is a 4% chance that an American family will leave their house between 10 PM and 12:59 AM.
What is the probability that a trip happened between 1 AM and 12:59 PM?
0.234
0.411
0.033
0.144
What is the probability that a randomly selected senior boy plays football OR wrestles?
9/143
21/143
30/143
39/143
What is the probability that a randomly selected senior boy plays football but does not wrestle?
9/143
12/143
18/143
104/143
What is the probability that a randomly selected senior boy plays football AND wrestles?
9/143
12/143
18/143
39/143
What is the probability that a chosen senior boy wrestles given that they play football?
9/27
9/18
9/12
9/39
What is the probability that a randomly selected student chose electrical engineering and likes math?
85/516
344/516
85/254
429/516
What is the probability that a randomly selected student chose electrical engineering or likes math?
85/516
344/516
85/254
429/516
What is the probability that a randomly selected student likes science given that they chose to be a chemical engineer?
91/171
91/516
433/516
342/516
What is the probability that a randomly selected student likes science or chose to be a mechanical engineer?
81/516
351/516
432/516
81/262
What is the probability that I eat broccoli and fish on a given night?
0.08
0.57
0.62
0.22
What is the probability that I eat fish for dinner on any given night?
0.15
0.08
0.07
0.33
What is the probability that I ate fish, given that I had a salad with my dinner?
0.49
0.11
0.07
0.76
A shipping company claims that 90% of its shipments are on time. Suppose this claim is true. If we take a random sample of 20 shipments made by the company, what's the probability that at least 1 of them arrives late?
0.88
0.12
0.18
0.82
When drawing names for a gift exchange, there are 25 people to choose, of which 14 are women. What is the probability that I choose 3 women from the bag? (Remember that I must choose 3 different women)
2184/13800
2744/15625
14/25
42/75
The standard license plate in California has one digit, followed by 3 letters, and then 3 more digits. The first digit cannot be a 0. the first and third letter cannot be I, O, or Q. How many possible license plates are there?
123,786,000
175,760,000
80,213,328
115,316,136
I want to arrange 5 photos on my desk. How many ways can I do this?
120
3125
25
125
Find the value of 6!
120
720
240
360
I like 7 flavors of ice cream at my local ice cream shop. On the third Sunday of July (International Ice Cream Day), they offer 4 scoops on their cones for the price of 2 scoops.
How many ways can I build my 4 scoop cone if I want a different flavor for each scoop?
840
2401
28
256
