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by BlastRoom
Practice identifying populations, samples, parameters, and statistics in studies.
#algebra_2
20 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 city has 40,000 registered voters. A firm interviews 600 of them and finds that 54% favor a bond measure. What is 54%?
A principal estimates the percent of the school's 1,200 students who walk to school. She asks 90 students before classes and gets 28%. What group is the population?
A county wants the fraction of all 50,000 households with broadband. It surveys 400 households; p-hat = 0.62. What quantity does p-hat name?
A library has 18,000 books. Staff checks every book record and finds 22% were checked out last year. In this study, what is 22%?
A factory produces 8,000 batteries in a day. An inspector tests 50 batteries and finds 3 defective. What is the sample?
A hospital studies the mean waiting time for all emergency visits in July. Analysts review 75 July visits and report 42 minutes. The population is what group?
A senior class has 312 students. A counselor surveys 80 seniors and reports their mean homework time is 27 minutes per night. What is the 27-minute mean?
A clinic wants the mean wait time for all visits this week. Staff records 80 visits; x-bar = 18.6 minutes. What quantity does x-bar name?
An aquarium has 3,400 visitors on Saturday. Staff survey 120 visitors as they leave and find 68% saw the shark exhibit. What group is the sample?
A bottling plant fills 5,000 bottles in a shift. A technician measures every bottle and reports a mean volume of 500.4 mL. What is 500.4 mL?
A software company wants the percent of all current app users who tried a new feature. It analyzes data from 5,000 users and gets 18%. Identify the population.
A botanist wants the mean height of all 1,500 seedlings in a greenhouse. After measuring every seedling, she writes mu = 23.4 cm. What does mu name?
A state has 2,400,000 eligible voters. A poll calls 1,200 voters and finds 48% support a tax change. How should 48% be classified?
A county has 52 public high schools. A researcher collects AP course counts from 15 schools and computes an average of 11 courses. What is the sample?
A farm manager wants the mean mass of all tomatoes harvested today. She weighs 60 tomatoes and calculates 142 g. For the study, what is the population?
An election office audits all 80,000 ballots from one county for overvotes and writes p = 0.012. What quantity does p name?
A school district has 840 teachers. The district asks every teacher for years of experience and reports a median of 9 years. What is the 9-year median?
A university wants the mean commuting distance for its 6,200 undergraduates. It surveys 310 undergraduates and reports 14 km. What group is the population?
A bakery bakes 900 loaves in the morning. A manager weighs 45 loaves and finds a mean mass of 510 g. The sample consists of what?
A school wants the percent of all 10,000 students who use tutoring. It surveys 250 students and writes n = 250. What quantity does n name?
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.
Sampling Methods and Bias
40 questions
