Ahigh school student volunteers to present a report to the administration about the types of lunches students prefer. he surveys members of his class and records their choices. what type of sampling did the student use?

convenience sampling is the correct answer.

Step-by-step explanation:

A convenience sample is a type of non-probability sampling method where the sample is taken from a group of people easy to contact or to reach.

For example: standing at a mall or a grocery store and asking people to answer questions would be an example of a convenience sample.

This type of sampling is also known as grab sampling or availability sampling. There are no other criteria to the sampling method except that people be available and willing to participate.

In addition, this type of sampling method does not require that a simple Random sample is generated, since the only criteria is whether the participants agree to participate.

p ÷ r = tan(x)

step-by-step explanation:

given that there is a figure below shows a right triangle: a right triangle is shown with hypotenuse equal to q units and the length of the legs equal to p units and r units.

graph is missing so i will create the graph as per given information.

the angle between the legs having lengths p units and q units is y degrees. the angle between the legs having lengths r units and q units is x degrees.

now we need to find about what is p ÷ r equal to.

so we can use trigonometric ratio tan(x)=[altitude]/[base] to find the value of p ÷ r, because p is the altitude and r is the base.

p ÷ r=tan(x)

hence final answer is p ÷ r=tan(x).