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Elina [12.6K]
3 years ago
15

The principal of a large high school wants to learn about student opinion regarding remote learning versus in person learning. E

ach of the following methods introduces a possible source of bias. Name the type of bias . a. The principle selects a random sample of students from those who signed up for remote learning. b. The student emails a random sample of 100 students, but only 28 students respond . c. The principal surveys the first 50 students that submit their learning preference for the upcoming school year.
Mathematics
1 answer:
jasenka [17]3 years ago
6 0

Answer:

Step-by-step explanation:

the students that are in the survey are in it because they like the subject, rather than picking students from both types of groups, the ones that aren't doing remote learning and the ones that are doing remote learning.

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Answer:

23.80

You have to divide 476 by 20

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What is the slope of the line that contains the points (12, 17) and (-8, -17)?
kherson [118]

Answer:

1 7⁄10 = m

Step-by-step explanation:

m = -y₁ + y₂\-x₁ + x₂ → -17 - 17\-12 - 8 >> 1 7⁄10

-34 -20

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What is the slope of the line?
lana66690 [7]

Answer:

y=2x

Step-by-step explanation:

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a plane averaged 400 mph on a trip going east, but only 280 mph on the return trip. The total flying time in both directions was
Liula [17]

Answer:

1400 miles

Step-by-step explanation:

Speed is the time rate of change of distance. It is the ratio of distance to time and is given by the equation:

Speed(S) = \frac{distance(d)}{time(t)}\\ S=\frac{d}{t}

plane averaged 400 mph on a trip going east, but only 280 mph on the return trip.

The time spent (t₁) in going east is given by:

S=\frac{d}{t_1}\\ t_1=\frac{d}{S} =\frac{d}{400mph}

The time spent (t₂) in going east is given by:

S=\frac{d}{t_2}\\ t_2=\frac{d}{S} =\frac{d}{280mph}

The total time (t) = t₁ + t₂

t = t₁ + t₂ = 8.5 hours

\frac{d}{400}+\frac{d}{280}  =8.5\\280d+400d=952000\\680d=952000\\d=1400miles\\

Therefore the one way distance is 1400 miles

7 0
3 years ago
Select the correct answer from each drop-down menu.
tester [92]

Answer:

  • April
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Step-by-step explanation:

Dimensions of the prism is 5x8x6

April made a mistake, she packed 4 layers of unit cubes instead of 5 layers

<u>Correct  volume of the prism is:</u>

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<u>Correct answer choices:</u>

  • April
  • She did not pack enough layers of centimeter cubes
  • 240 cubic centimeters
6 0
3 years ago
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