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Ber [7]
2 years ago
8

!!!!!!!!WILL MARK BRAINLIEST!!!!!!!!!!!! A school board is interested in whether high school students would like to shift the sc

hool day forward by 30 minutes. They decide to conduct a survey and randomly select students who are involved in extracurricular activities. Which statement is true? A. The survey results are most at risk for nonresponse bias. B. The survey results are most at risk for undercoverage. C. The survey results are most at risk for students not being able to answer honestly. D. The survey results are not at risk for any bias.
Mathematics
2 answers:
Andrej [43]2 years ago
8 0

Answer:

B the survey results are most at risk for undercoverage

Step-by-step explanation:

Sati [7]2 years ago
7 0
The correct answer is B


These students do not represent the whole population of students, so the results of the survey will disproportionately recognize the opinion of the extracurricular students.
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rewona [7]

Answer:

20%

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Hope This Helps!!!

6 0
2 years ago
A 10 ft pole has a support rope that extends from the top of the pole to the ground. The rope and the ground form a 30 degree an
mr Goodwill [35]

Answer:

The length of rope is 20.0 ft . Hence, <u>option (1) </u> is correct.

Step-by-step explanation:

In the figure below AB represents pole having height 10 ft  and AC represents the rope that is from the top of pole to the ground. BC represent the ground distance from base of tower to the rope.

The rope and the ground form a 30 degree angle that is the angle between BC and AC is 30°.

In right angled triangle ABC with right angle at B.

Since we have to find the length of rope that is the value of side AC.

Using trigonometric ratios

\sin C=\frac{\text{perpendicular}}{\text{hypotenuse}}

\sin C=\frac{AB}{AC}

Putting values,

\sin 30^\circ} =\frac{10}{AC}

We know, \sin 30^\circ}=\frac{1}{2}

\frac{1}{2} =\frac{10}{AC}

On solving we get,

AC= 20.0 ft

Thus, the length of rope is 20.0 ft

Hence, <u>option (1)</u> is correct.

8 0
3 years ago
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dexar [7]

Answer:

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Step-by-step explanation:

Assuming you can't choose the same song a second time, the probability is 35/79.

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Help is very much appreciated!
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Answer:

Step-by-step explanation:

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3 years ago
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