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Gnoma [55]
3 years ago
6

The student council at Mountain View High School plans to conduct a survey to determine the student body's opinion of the new lu

nch menu. Which of the following sampling methods would be most likely to result in nonresponse bias? O A. Handing out a questionnaire to seniors only 0 B. Obtaining an alphabetical list of all students and surveying every 10th student O C. Setting up a booth in the lunchroom where students can give their thoughts D. Handing out a questionnaire to students leaving campus at lunchtime
Mathematics
2 answers:
grin007 [14]3 years ago
4 0

Answer:

C. Setting up a booth in the lunchroom where students can give their thoughts

Step-by-step explanation:

Sampling is the process by which some part of the entire population is selected and researched. This selected population helps in estimating the researches for the entire population. There are various methods used for the process of sampling.

For the given case, the sampling method to be adopted is to view each students' opinion on the issue. For this process, setting up a booth can prove helpful as the opinion of every student can be viewed with no biases. Also, every student is free to provide their opinion with any fear.

lidiya [134]3 years ago
3 0

Answer:

Handing out a questionnaire to students leaving campus at lunchtime.

Step-by-step explanation:

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I don't understand the question. Help please?<br><br>Find the value of X<br><br>Find the value of Y
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Let's start with x... Since angle AOE is a 90 degree angle, then we know the supplementary angle EOB is also 90 degrees.  The 2 angles that make up angle EOB are given to us as expressions.  Added together the must equal 90 degrees...

(x+8) + (2x-8) = 90
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Now if we look at y, we see it is an opposite angle from angle DOB.  Because it is opposite, it is also congruent... so it has to be equal to angle DOB... and since angle DOB is 2x - 8, we can substitute x with the answer we found in the last step, 30, to find the angle.

2x - 8= y
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60 - 8 = y
y = 52 degrees

Since angle DOB equals 52 degrees, then y = 52 degrees

x = 30 degrees
y = 52 degrees

*Note, you can also find the value of angles GOF and EOD by plugging x (30) into the expressions.
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Trench Warfare<br> Define in own words
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Write an expression to represent the perimeter of a rectangle with the length of x -4 and width of 2x +8
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Step-by-step explanation:

5 0
3 years ago
Cammie can mow 1/2 acre in 25 minutes. If her rate is constant, Cammie says she can mow 1 1/4 acres in one hour. Is Cammie corre
Sergeu [11.5K]

Answer: No, Cammie is not correct. She can mow  1\frac{1}{5}\ acres in one hour (See explanation).

Step-by-step explanation:

Convert the mixed number to an impoper fraction:

1. Multiply the whole number part by the denominator of the fraction and add the product to the numerator.

2. The denominator does not change.

Then:

1\frac{1}{4}=\frac{(1*4)+1}{4}=\frac{5}{4}

Let be "x" the acres Cammie can mow in one hour.

You know that she can mow \frac{1}{2}\ acre in 25 minutes, then you can set up the following proportion (Remember that 1 hour has 60 minutes):

\frac{\frac{1}{2}}{25}=\frac{x}{60}

Solving for "x", you get:

\frac{\frac{1}{2}}{25}=\frac{x}{60}\\\\(60)(\frac{1}{50})=x\\\\x=\frac{6}{5}

Convert from improper fraction to mixed number:

1. When you divide 6 by 5, the quotient is 1. This will be the whole number part.

2. The remainder is 1. This will be the numerator.

3. The denominator does not change.

Then:

x=1\frac{1}{5}

Therefore, she can mow  1\frac{1}{5}\ acres in one hour.

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