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madam [21]
2 years ago
9

Marcus wants to know if students at his school like to sing in the shower. He polled 40 students who were not part of the school

choir. He found that 11 of the surveyed students enjoy singing in the shower. Is there a sampling bias in the situation above? A. No. Marcus selected a random, unbiased sample for his study. B. Yes. Marcus created bias by only polling 40 students. C. Yes. Marcus created bias by excluding students who are in the choir. D. There is not enough information to determine if Marcus selected a biased sample.
Mathematics
1 answer:
telo118 [61]2 years ago
5 0

Answer:

C

Step-by-step explanation:

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4 0
3 years ago
Is y=4 a function, a relation, or is it both?
Maurinko [17]

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Step-by-step explanation:

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3 0
3 years ago
To rationalize the denominator 2 sqrt 10/ 3 sqrt 11 you should multiply the expression by which fraction
malfutka [58]

Answer:

B

Step-by-step explanation:

To rationalise the denominator.

Multiply the numerator/denominator by the radical on the denominator.

The radical on the denominator is \sqrt{11}, thus

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7 0
3 years ago
Read 2 more answers
Please help me Find a, b, and c
zlopas [31]

Answer:

It is A.

Step-by-step explanation:

To solve for b, use the 45-45-90 triangle theorem, in which each of the legs is x, so the legs would be 8. The hypotenuse would therefore be 8√2.

So without further solving the answer is A, since it's the only one with 8√2.

However, I will still solve for A and C. Using the 30-60-90 theorem, we have the sides as x, x√3, and 2x. The second longest side is b. Using this, we find a = 4√6 and c to be 4√2

3 0
2 years ago
PLZ HELP ASAP! WILL MARK BRAINLIEST!!
stepan [7]

Answer:

I believe this is right.  Answer: 6/7

Step-by-step explanation:

5+1 = 6

The denominator stays the same.

6 0
3 years ago
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