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KengaRu [80]
3 years ago
6

It is called a _____ when each person in the population has an equal chance of being selected.random sampleself-selected sampleb

iased sampleconvenience sample
Mathematics
1 answer:
Georgia [21]3 years ago
5 0
It's a random sample
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How do i do this plz help
e-lub [12.9K]

Answer:

its 60 bc 6-2÷180

4÷180=45

8 0
3 years ago
Your garden has a perimeter of 36 feet. what is the length of missing side.​
taurus [48]

Answer:

I think the answer is 3 for 1 length side. And in you need 12 for both length sides. So the total is 36 and one side is 12. Since it's a rectangle,you now know two side lengths since they are the same,just opposite from each other. So 12 + 12 = 24. You do 36 – 24 because you need to get the total number for length which is 12. 12 divided by 2 is 6 which is one length side. You can check by doing 6 + 6 + 12 + 12 and you get 36.

Hope this helped!

Can I get brainliest?

8 0
3 years ago
A study was conducted to find out if a new exercise program was more effective than an old one at improving cardiovascular fitne
WITCHER [35]

Answer: (B)

Step-by-step explanation:

An independent sample test compares two sample means in order to determine the statistical significance of the difference between their population means.

The independent sample test would be the best hypothesis test for this study because:

1. There was a random samples of data from the population

2. There was no relationship between the subjects in each sample. That is;

- subjects in the first group were not also in the second group

- subjects in the first group did not influence subjects in the second group and vice versa.

3. There was independence of observations in this study. Each subject in each group was separately observed and each subject has a given fitness performance score.

4. There are values on both the dependent and independent variables.

- the dependent variable is FITNESS PERFORMANCE and for each subject, it is dependent on either the OLD EXERCISE PROGRAM or the NEW EXERCISE PROGRAM.

5. Our dependent variable her is a continuous variable as we see from the range of fitness scores. The lowest score is 19 and the highest score is 73. This shows that the variable is continuous. All the other scores fall in between.

6. Our independent variable is a categorical variable. Categorized into OLD EXERCISE PROGRAM and NEW EXERCISE PROGRAM.

4 0
3 years ago
In a race from point X to point Y and back, Jack averages 30 miles per hour to point Y and 10 miles per hour back to point X. Sa
svlad2 [7]

Answer:

Sandy will finish the race first.

Step-by-step explanation:

Let D be the total one sided distance in miles, ( between X and Y ),

We know that,

Speed =\frac{Distance}{Time}

\implies Time =\frac{Distance}{Speed}

Since, from point X to point Y and back, Jack averages 30 miles per hour to point Y and 10 miles per hour back to point X.

So, the total time taken by Jack = \frac{D}{30}+\frac{D}{10}

=\frac{D+3D}{30}

=\frac{4D}{30}

=0.1333D

Also, Sandy averages 20 miles per hour in both directions,

So, the total time taken by Sandy = \frac{D}{20}+\frac{D}{20}

=\frac{D+D}{20}

=\frac{2D}{20}

=\frac{D}{10}

=0.10D

∵ 0.133D > 0.10D

Hence, Sandy will finish the race first.

3 0
3 years ago
Convert the equation 3x+2y=14 to slope intercept form.<br><br> pleaseee help mee
MArishka [77]

Answer:

y= - 3/2x + 7 hope this helps you out :)

8 0
3 years ago
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