More Binomial and Geometric Practice

If you were to flip a coin 20 times, what is the probability you would get at least 13 heads?

• .9423
• .1316
• .0577
• .0739

Tags

CCSS.HSS.CP.B.9

If you were to flip a coin 20 times, what is the probability you would get at most 13 heads?

• .9423
• .1316
• .0577
• .0739

Tags

CCSS.HSS.CP.B.9

If you were to flip a coin 20 times, what is the probability you would get exactly 10 heads?

• .5
• .1762
• .5881
• .4119

Tags

CCSS.HSS.CP.B.9

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 more than 5 will vote for Trump?

• .9635
• .0365
• .9561
• .0439

Suppose 39% of Americans will vote for Donald Trump on election day.  If a random sample of 8 voters are selected, is the mean number of voters who will be voting for Trump?

• 4
• 8
• 3.l2
• 39

The owner of a small convenience store is trying to decide whether to discontinue selling magazines. He suspects that only 5% of the customers buy a magazine and thinks that he might be able to use the display space to sell something more profitable. What is the probability that at least 5 of his first 50 customers buy magazines?

• 0.104
• 0.896
• 0.066
• 0.774

Tags

CCSS.HSS.CP.B.8

CCSS.HSS.CP.B.9

You are playing against Mrs. Feldman 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?

• 17%
• 95%
• 5%
• 83%

The local Chipotle is running a promotion where each large drink cup has a large pull-off tab that reveals a prize (free burrito!) or the message "Try again next time."  Chipotle claims that 25% of the cups have tabs with a  prize.  You visit Chipotle to try to win.  What is the probability that you win on your third visit?

• 0.86
• 0.14
• 0.42
• 0.58

The probability that Jalen makes a free throw is 75%. What is the probability he makes his first free throw on his third attempt?

• geometcdf(3, 0.75)
• geometpdf(0.75, 3)
• geometpdf(3, 0.75)
• geometcdf(0.75, 3) 

An algebra 2 test has 6 multiple choice questions with four choices with one correct answer each. If we just randomly guess on each of the 6 questions, what is the probability that you get exactly 3 questions correct? (You need to figure out the p value first. It is not given to you.)

• 96.2%
• 13.2%
• 8.31%
• 25.0

Tags

CCSS.HSS.CP.B.9