Question

Can you determine whether each sample is random or not? Please explain your answer.

a. Asking every 15th person on the school roster if they buy lunch in the cafeteria or bring lunch from home.

b. Measuring the height of all the sunflowers to find the mean height of all the flowers in a garden.

Answer 1

Answer:

A seems to be random, while B seems to be not random

Step-by-step explanation:

A is random, because you're asking every 15th person who either buy lunch from the cafeteria, or from home as this type of sample is not specified and is random, instead of asking everybody on the school roster whether they bring lunch from home or from the cafeteria.

B is not random, as you're measuring every single plant, and is not giving a random sample or quantity of the plants.