Which sampling method divides the samples into precincts?
a. simple random sampling
b. systematic random sampling
c. stratified random sampling
d. cluster sampling

D. Cluster sampling

Step-by-step explanation:

Dealing with the whole population can be cumbersome, time-consuming and very expensive. In order to make it more feasible for researchers they can employ cluster sampling. In cluster sampling, the population are divided into precincts, or gropus. The researcher then selects the groups that will be included in the study through simple random samping or systematic sampling. The researcher can opt to choose let the whole cluster or group to participate in the study or they can randomly select the individuals within the groups.

answer: the answer is 40.82

step-by-step explanation: 3.14 x 13(or half of 26) to the power of 2

y=mx+b

step-by-step explanation:

m slope

b y-intercept