by BlastRoom
Finding the probability that a normal variable falls below, above or between given values.
#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.
Fill volumes from a soda machine are approximately normal with mL and mL. The red line on the curve marks 350 mL. What is the probability that a bottle's volume falls in the shaded region? Round to four decimal places.

Train arrival errors for a commuter line are approximately normal with minutes and minutes. Find the probability that a train arrives more than 1.8 minutes early. Round to four decimal places.
Backpack masses for ninth graders are approximately normal with kg and kg. What is the probability that one backpack has mass below 5.6 kg? Round to four decimal places.
LED bulb lifetimes from one factory are approximately normal with hours and hours. The red line on the curve marks 760 hours. What is the probability that a bulb's lifetime falls in the shaded region? Round to four decimal places.

A school's 5 km race times are approximately normal with minutes and minutes. What is the probability that a randomly chosen runner finishes under 19.6 minutes? Round to four decimal places.
Yogurt cup masses on a filling line are approximately normal with g and g. What is the probability that a cup contains less than 147 g? Round to four decimal places.
Tomato plant heights in a greenhouse are approximately normal with cm and cm. The red line on the curve marks 45 cm. What is the probability that a plant's height falls in the shaded region? Round to four decimal places.

Clinic wait times are approximately normal with minutes and minutes. Find the probability that a patient waits less than 22.8 minutes. Round to four decimal places.
Cereal box masses are approximately normal with g and g. The red line on the curve marks 492.8 g. What is the probability that a box's mass falls in the shaded region? Round to four decimal places.

Scores on a statistics exam are approximately normal with points and points. What is the probability that a score is below 83.2 points? Round to four decimal places.
Daily sales at a food truck are approximately normal with dollars and dollars. The red line on the curve marks 500 dollars. What is the probability that a day's sales fall in the shaded region? Round to four decimal places.

Printer cartridge page yields are approximately normal with pages and pages. What is the probability that a cartridge prints more than 2652 pages? Round to four decimal places.
Student body temperatures at a clinic are approximately normal with °C and °C. What is the probability that a temperature is above 37.5 °C? Round to four decimal places.
Parcel delivery times are approximately normal with minutes and minutes. The red line on the curve marks 28 minutes. What is the probability that a delivery time falls in the shaded region? Round to four decimal places.

Apple diameters in an orchard are approximately normal with cm and cm. What is the probability that an apple's diameter exceeds 8.22 cm? Round to four decimal places.
Lap times for a swim team drill are approximately normal with seconds and seconds. The red line on the curve marks 42.5 seconds. What is the probability that a lap time falls in the shaded region? Round to four decimal places.

Monthly household water use in a town is approximately normal with kL and kL. What is the probability that a household uses more than 14.25 kL? Round to four decimal places.
Dog masses at a veterinary clinic are approximately normal with kg and kg. The red line on the curve marks 16.2 kg. What is the probability that a dog's mass falls in the shaded region? Round to four decimal places.

Rice bag masses are approximately normal with kg and kg. What is the probability that a bag is heavier than 10.132 kg? Round to four decimal places.
Weekly training distances for runners are approximately normal with km and km. What is the probability that a runner trains more than 34.4 km in a week? Round to four decimal places.
Bean seed germination times are approximately normal with days and days. The red lines on the curve mark 6.4 and 8.5 days. What is the probability that a germination time falls in the shaded region? Round to four decimal places.

Commute times for staff at a school are approximately normal with minutes and minutes. What is the probability that a commute lasts between 24 and 34 minutes? Round to four decimal places.
Rechargeable battery lifetimes are approximately normal with hours and hours. The red lines on the curve mark 10.7 and 13.2 hours. What is the probability that a lifetime falls in the shaded region? Round to four decimal places.

Steel rod lengths from a machine are approximately normal with cm and cm. The red lines on the curve mark 49.4 and 49.9 cm. What is the probability that a rod's length falls in the shaded region? Round to four decimal places.

Noise levels in a gym are approximately normal with dB and dB. What is the probability that a reading is between 57.75 and 67.5 dB? Round to four decimal places.
Package masses in a warehouse are approximately normal with kg and kg. Find the probability that a package is between 1.93 and 2.19 kg. Round to four decimal places.
Sapling heights at a nursery are approximately normal with cm and cm. The red lines on the curve mark 93.75 and 129 cm. What is the probability that a sapling's height falls in the shaded region? Round to four decimal places.

Email response times for a help desk are approximately normal with hours and hours. What is the probability that a response takes between 7.0 and 9.6 hours? Round to four decimal places.
Test completion times are approximately normal with minutes and minutes. The red lines on the curve mark 40.8 and 53.1 minutes. What is the probability that a completion time falls in the shaded region? Round to four decimal places.

Nitrate concentrations in lab water samples are approximately normal with mg/L and mg/L. What is the probability that a sample is between 8.85 and 13.35 mg/L? Round to four decimal places.
The lengths of farmed trout are approximately normal with cm and cm. The red line on the curve marks 36.5 cm. In a harvest of 800 trout, about how many have lengths in the shaded region? Round to the nearest trout.

Packaged lunch calorie counts are approximately normal with calories and calories. Among 600 lunches, about how many have fewer than 550 calories? Round to the nearest lunch.
Bolt diameters are approximately normal with mm and mm. The red lines on the curve mark 9.88 and 10.18 mm. In 1200 bolts, about how many have diameters in the shaded region? Round to the nearest bolt.

Apple masses in a shipment are approximately normal with g and g. In a crate of 300 apples, about how many are heavier than 205 g? Round to the nearest apple.
Bus arrival times after 8:00 are approximately normal with minutes and minutes. Among 200 buses, about how many arrive before 4.6 minutes after 8:00? Round to the nearest bus.
Cranberry diameters are approximately normal with mm and mm. The red lines on the curve mark 13.25 and 16.1 mm. In 1000 cranberries, about how many have diameters in the shaded region? Round to the nearest cranberry.

Hemoglobin readings for donors are approximately normal with g/dL and g/dL. Among 400 donors, about how many have readings below 12.92 g/dL? Round to the nearest donor.
Orange juice bottle fills are approximately normal with mL and mL. In 1500 bottles, about how many contain less than 982 mL? Round to the nearest bottle.
Smartphone repair times are approximately normal with minutes and minutes. In 200 repairs, about how many take more than 86.5 minutes? Round to the nearest repair.
Sunflower heights in a field are approximately normal with cm and cm. Among 900 sunflowers, about how many are between 150.1 and 184.3 cm tall? Round to the nearest sunflower.
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.
normalcdf or invNorm: Which Command, and What Goes In It
20 questions