QUESTIONS

Question 1:

From a colony of 5,000 bees, 200 were collected and examined for striped bodies. 40 bees in the sample had striped bodies.

a) Write down the population size.
b) Write down the sample size.
c) Determine the fraction of the sample with striped bodies.
d) Calculate the total number of bees with striped bodies in the population.

Question 2:

In a school of 1,200 students, 100 students were randomly selected for a survey. 25 of them said they participate in the school choir.

a) Write down the population size.
b) Write down the sample size.
c) Calculate the percentage of students in the sample who participate in the school choir.
d) Calculate the total number of students in the school who participate in the choir.

Question 3:

A factory produces 8,000 bottles per day. A quality control check was done on a sample of 400 bottles, and 20 were found to be defective.

a) Write down the population size.
b) Write down the sample size.
c) Determine the fraction of the sample that was defective.
d) Estimate the total number of defective bottles produced in a day.

Question 4:

In a town of 10,000 residents, 500 were randomly selected for a health survey. 75 of them reported having allergies.

a) Write down the population size.
b) Write down the sample size.
c) Calculate the percentage of sampled residents who have allergies.
d) Estimate the total number of residents in the town who have allergies.

Question 5:

A zoo has 2,000 animals. A veterinarian examined a sample of 150 animals and found that 30 of them needed medical attention.

a) Write down the population size.
b) Write down the sample size.
c) Determine the fraction of the sample that needed medical attention.
d) Estimate the total number of animals in the zoo that need medical attention.

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