Mary wants to see if the 2,000 high schoolers at her school like pizza or not. To find out
how many of them like pizza, she goes to a local pizzeria and intends to ask 100 high
schoolers who arrive. She gets tired after asking 15. (7 pts)
a. What is the population?
b. What is the sample?
c. What kind of sampling is she using? __
d. Will this poll be biased? If yes how so? If yes, name the type of bias and explain
why this poll has that type of bias.

(ii) The manner of bias of the poll is that the sample chosen from the population are those that are more likely to have the same positive response to the survey question

(iii) Selection bias,

(iv) The reason why the poll has the selection bias is because a subjective sampling method was used

Step-by-step explanation:

The given parameters are;

The number of high schoolers at the school = 2,000

The number of high schoolers at the pizzeria Mary intends to ask = 100

The number of high schoolers she ask = 15

Therefore;

a. The population is the number high schoolers at her school = 100

b. The sample = The number of high schoolers that surveyed = 15

c. The kind of sampling Mary is using is convenience sampling

d. (i) The poll is biased because, the sample chosen from the population are those who already are at the pizzeria where pizza is sold and they are more likely to have the same positive response to the survey question

(ii) The type of sampling bias is Selection bias,

(iii) The reason why the poll has the selection bias is because the sampling was made subjectively by selecting to sample only the high schoolers at the pizzeria, which is the same as the high schoolers that are more certain to like pizza.