At Least One Probability
Quiz
•
Mathematics
•
12th Grade
•
Practice Problem
•
Hard
Anthony Clark
FREE Resource
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15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
You are playing against Miss Soldan in a student/faculty basketball game. You know she is terrible at free throws (she has an 8% accuracy rate), so you keep fouling her. If she attempts 18 free throws, what is the probability that she makes more than 3 of them?
0.05
0.95
0.17
0.83
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The student who makes the morning announcements has the bad habit of saying “like” all the time. The chance that they say “like” in a sentence is 60%. You decide to keep a tally of how many times they say like. If they say 350 sentences this week, what is the probability that they will say “like” at least 200 times?
0.87
0.13
0.85
0.15
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
According to a recent survey, 15% of houses in America are haunted by a ghost. If your neighborhood has 40 houses, what is the probability that 5 or more of them are haunted?
0.74
0.26
0.57
0.43
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
You notice that cold weather makes Dr. Marks extra salty. When the weather is cold, there is a 40% chance of a tardy sweep. If February has 19 cold days, what is the probability that Dr. Marks will call more than 5 tardy sweeps?
0.84
0.16
0.93
0.07
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A survey found that 25% of pet owners had their pets bathed professionally rather than do it themselves. If 18 pet owners are randomly selected, find the probability that exactly 5 people have their pets bathed professionally
3.42
1.03
0.072
0.199
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Suppose 39% of Americans will vote for Donald Trump on election day. If a random sample of 8 voters are selected, what is the probability that 6 or more will vote for Trump?
.9635
.0365
.9561
.0439
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which formula would you use in the following case? A research team at Cornell University conducted a study showing that approximately 10% of all businessmen who wear ties wear them so tightly that they actually reduce blood flow to brain, diminishing cerebral functions. At a board meeting of 20 businessmen, all of whom wear ties, what is the probability that at least one tie is too tight?
(a)
(b)
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