News cameras take an overhead picture of a part of a crowd at an outdoor event. journalists then count the number of people in the picture and use the sample to estimate the total number of people in the crowd. this process is an example of

random sampling.
stratified sampling.
systematic random sampling.
cluster sampling.

cluster sampling.

Step-by-step explanation:

The researcher divides the population into separate groups which are called clusters.

A random sample of clusters is selected from the population. The researcher estimates his analysis on data from the sampled clusters.

In the given situation journalists are the researchers , they took the picture of a part of crowd as a cluster and use the sample to estimate the total number of people in the crowd.

Thus this process is an example of cluster sampling.

It is cluster sampling

Step-by-step explanation:

just know i got a 100% on test and that is the answer

total amount of money that he should pay if he has not used his duty free exemption is $98

step-by-step explanation:

given a united states citizen returning to the states declares the following items at the customs office: 3 shirts at $8.50 each 2 dresses at $27.50 each 1 pair of gold cuff links at $17.50 per pair. we have to find how much he pay

cost of 3 shirts if one cost at $8.50 is

cost of 2 dresses if one cost at $27.50 is  

cost of 1 pair of gold cuff at $17.50

so, total amount of money that he should pay if he has not used his duty free exemption is   $25.5+$55+$17.50=$98