Five more than twice a number is equal to 19. What is that number A.)6 B.)7 C.)12 D.)28

You want know if self-checkout is faster than regular checkout. One hundred customers were sent to

Kazeer [188]

A researcher's design of an experiment is to make clearer already known

facts, or to discover new knowledge.

The responses are:

Experimental units: The customers

Explanatory variable: The type of checkout used

Treatments: The checkout to which a customer is sent to

Response variable: The time it takes to check out

Reasons:

The aim of the experiment is to determine if self-check out is faster than

regular checkout.

The number of customers sent to one of the checkout options = 100

The experimental units are the subject of the experimental treatment.

Therefore;

The experimental units are the customers that are sent to a particular checkout.

An explanatory variable is the manipulated variable in an experiment. An explanatory variable is known as an independent variable.

In the question, the explanatory variable are the type of checkout; Self-checkout or regular checkout

Treatments are the levels of the explanatory variable available in the experiment, or a combination of the levels. The treatment is what the experimental units are subjected to.

In the question, the treatment are the use of self-checkout or regular checkout.

The response variable, is also known as the dependent variable, that depends on the treatment an experimental unit is subjected to.

The response variable in the question is the times it takes to checkout

Learn more about experimental design here:

brainly.com/question/2118275

3 0

3 years ago

Murilo bought 8 pizzas for his baseball team to share equally after the game. Each pizza has 6 slices, and the expression repres

krok68 [10]

The second one, The fourth one, and the last one.
If p, the amount of people, is 12 then each person Will get 4 slices and there will be no slices left
If p, the amount of people, is 15, then each person will get 3 slices but there will be 3 slices left over
If p, the amount of people, is 16, then each person will get 3 slices of pizza with no leftovers.

6 0

4 years ago

Read 2 more answers

Find the value of each variable.

V125BC [204]

Answer:

see explanation

Step-by-step explanation:

Using the exact values of the trigonometric ratios

sin60° = $\frac{\sqrt{3} }{2}$ , cos60° = $\frac{1}{2}$