Exercise
Form 5: Estimating Population Proportions and Totals
Learn to estimate overall population proportions and totals from sample data. Practice making predictions about larger populations based on smaller subsets.
Questions
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MultiChoice
In a random sample of 50 students, 30 prefer pizza. In a school of 400 students, estimate how many total students prefer pizza.
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MultiChoice
A random sample of 20 residents shows that 6 own a dog. Out of 500 residents in the town, estimate the total number of dog owners.
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MultiChoice
A sample of 40 trees in a forest of 1,000 trees shows 14 pine trees. Estimate the total number of pine trees in the forest.
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MultiChoice
Out of 25 randomly surveyed students, 10 ride the bus. In a middle school with 300 students, how many drive or ride the bus?
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MultiChoice
In a random sample of 60 items, 15 are defective. What is the estimated proportion of defective items in the entire batch?
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MultiChoice
A survey of 100 random voters finds 45 support Candidate A. If 1,000 people vote, estimate how many votes Candidate A will receive.
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MultiChoice
A random sample of 50 cars in a parking lot finds 20 silver cars. If there are 400 cars total, estimate the number of silver cars.
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MultiChoice
In a sample of 30 students, 5 play an instrument. Predict how many of the 450 total students play an instrument.
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MultiChoice
A marine biologist tags 30 fish out of a sample of 150 caught. If 3,000 fish are in the lake, estimate how many tagged fish proportion yields.
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MultiChoice
In a random sample of 80 households, 32 have high-speed internet. In a town of 800 households, estimate the total with high-speed internet.
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MultiChoice
A sample of 50 seeds shows 35 germinated. What is the estimated germination rate for the entire batch of seeds?
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MultiChoice
A random sample of 100 students reveals 30 eat school lunch daily. Among 600 students, how many eat school lunch daily?