by BlastRoom
Finding the probability of exactly, at most or at least a given number of successes in n trials.
#probability_and_statistics

40 questions
One question set, multiple game modes. Tap any game to see it in action. Not sure which to pick?
Answer to place stones and capture territory.
Outrun the snow together.
Earn blasts, then hunt the other team.
Answer to earn energy, then climb.

The class blasts through walls together.
Bid on mystery lots. Most money wins.
Sell tours. Nice, standard, or a total scam.
Answer, restock, and serve the rush.
More correct answers pulls the rope your way.
Answer, then shoot down the alien wave.
Answer, then tap to leap the frozen ridge.
A player makes 60% of free throws; attempts are independent. In 5 attempts, find the probability that she makes exactly 3, to three decimals.
At a clinic, each appointment is canceled with probability 0.20 independently. For 7 appointments, find the probability that exactly 2 are canceled, to three decimals.
A battery passes a test with probability 0.95 independently. In 8 tested batteries, find the probability that exactly 7 pass, to three decimals.
A soccer player scores on a shot with probability 0.35 independently. In 6 shots, find the probability that exactly 1 is a goal, to three decimals.
A website visitor clicks an ad with probability 0.12 independently. For 10 visitors, find the probability that exactly 2 click, to three decimals.
Each garden seed germinates with probability 0.85 independently. In 6 planted seeds, find the probability that exactly 5 germinate, to three decimals.
A safety alarm works with probability 0.90 independently. In 4 alarms, find the probability that exactly 4 work, to three decimals.
On a four-choice quiz, a random guess is correct with probability 0.25 independently. For 9 guesses, find the probability that exactly 3 are correct, to three decimals.
A plant blooms this week with probability 0.30 independently. Among 12 plants, find the probability that exactly 4 bloom, to three decimals.
A sales call succeeds with probability 0.30 independently. In 5 calls, find the probability that exactly 2 succeed, to three decimals.
A lab sample is contaminated with probability 0.15 independently. In 8 samples, find the probability that exactly 1 is contaminated, to three decimals.
A basketball player makes a shot with probability 0.70 independently. In 11 shots, find the probability that exactly 8 are made, to three decimals.
A machine makes an underweight box with probability 0.10 independently. An inspector checks 8 boxes. Find the probability that at most 1 is underweight, to three decimals.
A laptop has a defect with probability 0.05 independently. For 10 laptops, find the probability that at least 1 has a defect, to three decimals.
A customer replies to an email with probability 0.40 independently. For 6 emails, find the probability that at least 4 get replies, to three decimals.
A city bus is on time with probability 0.80 independently. During 9 trips, find the probability that at most 7 are on time, to three decimals.
A blood donor has type O blood with probability 0.25 independently. In 12 donors, find the probability that at most 2 have type O blood, to three decimals.
A service call is resolved on the first visit with probability 0.70 independently. For 7 calls, find the probability that at least 5 are resolved, to three decimals.
A turtle egg hatches with probability 0.60 independently. In 8 eggs, find the probability that at most 3 hatch, to three decimals.
A shopper uses a coupon with probability 0.30 independently. For 5 shoppers, find the probability that at least 2 use a coupon, to three decimals.
A phone passes inspection with probability 0.90 independently. Among 11 phones, find the probability that at least 10 pass, to three decimals.
A student likes a free sample with probability 0.55 independently. In 6 students, find the probability that at most 4 like it, to three decimals.
A smoke detector works with probability 0.85 independently. In 4 detectors, find the probability that at least 3 work, to three decimals.
A loan application is approved with probability 0.40 independently. For 12 applications, find the probability that at most 5 are approved, to three decimals.
An engineer tests 12 valves independently; each valve fails with probability 0.25. Name the calculator command for the probability that at most 4 fail.
A goalie stops each shot with probability 0.65 independently. For 9 shots, name the calculator command for the probability of exactly 6 stops.
Each seed germinates with probability 0.80 independently. For 7 seeds, name the calculator command for the probability that at least 5 germinate.
A customer buys a warranty with probability 0.18 independently. For 10 customers, name the calculator command for the probability that at most 2 buy warranties.
A nurse finds a patient needs follow-up with probability 0.30 independently. For 6 calls, name the calculator command for exactly 1 follow-up.
A factory light fails with probability 0.04 independently. For 11 lights, name the calculator command for the probability that at least 1 fails.
A parking meter works with probability 0.75 independently. For 8 meters, name the calculator command for the probability that at most 6 work.
A swimmer qualifies with probability 0.45 independently. For 5 swimmers, name the calculator command for the probability that exactly 3 qualify.
Each seed germinates with probability 0.85 independently. A gardener plants 6 seeds. Write the binomial expression for exactly 5 germinating.
A patient has a mild reaction with probability 0.10 independently. In 8 patients, write the binomial expression for exactly 2 mild reactions.
A basketball player makes a shot with probability 0.55 independently. In 9 shots, write the binomial expression for exactly 4 makes.
A package arrives on time with probability 0.92 independently. In 12 packages, write the binomial expression for exactly 10 on-time arrivals.
A student chooses the bus with probability 0.40 independently. For 7 students, write the binomial expression for exactly 3 choosing the bus.
An account holder resets a password with probability 0.25 independently. For 5 account holders, write the binomial expression for exactly 1 reset.
A computer chip passes inspection with probability 0.98 independently. In 10 chips, write the binomial expression for exactly 9 passing.
A survey respondent says yes with probability 0.35 independently. For 11 respondents, write the binomial expression for exactly 6 yes responses.
Crack the passcode before the zombies get in.
Answer, then swat bugs for bonus points.
Race through questions at your own speed.
Same question on every screen. Fastest wins.

Pick a tile, answer, hit bonuses and steals.
The Geometric Distribution
20 questions