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swat32
2 years ago
7

Determine whether the selection process for each sample was random or nonrandom.

Mathematics
1 answer:
stepladder [879]2 years ago
8 0

The selection process for each sample was Random, Hence, Random sampling

This is further explained below.

<h3>Determine whether the selection process for each sample was random or nonrandom.?</h3>

Generally,  During physical education classes, students are randomly assigned to teams by selecting names from a hat or bag containing their names on individual pieces of paper.

There is a designated area at a supermarket for shoppers to leave comments. Each week, a satisfied customer will be randomly selected from the feedback forms submitted to win a gift certificate.

Selection bias

For a research project, physicians must first compile a list of patients. The first ten people on the list will be placed in the placebo group.

A clothes retailer conducts surveys of clients who use its store credit card to better understand its clientele.

We collect five soil samples from the biggest farm in a given area to determine the quality of the soil there.

The distinction between random and non-random sampling is explained.

In random sampling, each sample has the same chance of getting the target variable. When a researcher uses a sampling strategy that is not random, the features of the sample chosen are not based on chance but on factors like their own convenience, their own professional judgment, and their own prior experience.

In conclusion,  During physical education classes, students are randomly assigned to teams by selecting names from a hat or bag containing their names on individual pieces of paper.

There is a designated area at a supermarket for shoppers to leave comments. Each week, a satisfied customer will be randomly selected from the feedback forms submitted to win a gift certificate.

Selection bias

Read more about  Random sampling

brainly.com/question/12719645

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4 0
3 years ago
If m angle5=4x+15 and m angle4=6x-5 , find m angle5 , if m angle5=m angle4
julsineya [31]

Answer:

Step-by-step explanation:

If angle 5 = 4x + 15, and angle 4 = 6x - 5, and angle 5 = angle 4, then:

4x + 15 = 6x - 5 and

20 = 2x so

x = 10. Now sub this back in for x in angle 5's expression:

angle 5 = 4(10) + 15 ---> 40 + 15 ---> angle 5 = angle 4 = 55 degrees

8 0
3 years ago
Which describes the standard deviation?
aleksandrvk [35]

Step-by-step explanation:

standard deviation is used to measure risks involved in an investment instrument. Standard deviation provides investors a mathematical basis for decisions to be made regarding their investment in financial market. Standard Deviation is a common term used in deals involving stocks, mutual funds, ETFs and others. Standard Deviation is also known as volatility. It gives a sense of how dispersed the data in a sample is from the mean.

I hope I answered correctly :)

3 0
3 years ago
Read 2 more answers
Please help!! With step by step
Sever21 [200]

Answer:

R=\$145.12

Step-by-step explanation:

<u>Compound Interest</u>

This is a well-know problem were we want to calculate the regular payment R needed to pay a principal P in n periods with a known rate of interest i.

The present value PV or the principal can be calculated with

P=F_a\cdot R

Solving for R

\displaystyle R=\frac{P}{F_a}

Where Fa is computed by

\displaystyle F_a=\frac{1-(1+i)^{-n}}{i}

We'll use the provided values but we need to convert them first to monthly payments

i=7\%=7/(12\cdot 100)=0.00583

n=3*12=36

\displaystyle F_a=\frac{1-(1+0.00583)^{-36}}{0.00583}

F_a=32.386

Thus, each payment is

\displaystyle R=\frac{4,700}{32.386}=145.12

\boxed{R=\$145.12}

4 0
3 years ago
Warmup/Reflection- necessary for attendance
Pepsi [2]

Answer:

x = 7

Step-by-step explanation:

-3 + 2x = 11

(group like terms)

2x = 11 + 3

2x = 14

(divide both sides by 2 to make x stand alone)

2x/2 = 14/2

x = 7

8 0
3 years ago
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