A radio talk show host asks listeners to call the radio station and give their opinions on a proposed new city ordinance. He uses the opinions of 200 callers to conclude that the voters are overwhelmingly opposed to the ordinance. Why is this sample likely to be biased?









A.
The survey is voluntary and includes only listeners of this radio program.







B.
There are not enough people in the sample.







C.
Radio listeners are more likely to be opposed to city ordinances.







D.
The entire population of the city was not surveyed.

Answers

Answer 1
Answer: I would say that the best answer is actually that people who are not opposed to the new rule are less motivated to call than the people who are opposing it, who feel that they need to do something about it.

But this is not one of the options. Among the options, the best is:
A.  The survey is voluntary and includes only listeners of this radio program.


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Answers

first, what was the original number?

it was 200+400=1000!

and when we want to know the change in percent, we divide the "new" number over the "original" number: and we'll know that percentage of the original the new number is!:

(200)/(1000) *100%= (2)/(10) *100%=(200)/(10) %=20%.

so the percent change was 80 %: the original number was reduced by (100-20)=80 %
The answer is 66%. Sorry if it is wrong.

Markus scored 85, 92, 82, and 94 on the first four tests of the semester. His teacher has not yet told him his score on his fifth test, but did tell him that his score on the fifth test is five points lower than the average (arithmetic mean) of all five tests. Which equation could Markus use to determine the score of the fifth test, x?

Answers

The answer is B. 5(x + 5) = 353 + x

(For anyone who needs it now)

Answer:  B. 5(x + 5) = 353 + x

Step-by-step explanation:

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Answers

(x-2)(x^2-9)=0\iff x-2=0\ or\ x^2-9=0\n\nx-2=0\ \ \ \ |add\ 2\ to\ both\ sides\n\n\boxed{x=2}\n\nx^2-9=0\ \ \ \ |add\ 9\ to\ both\ sides\n\nx^2=9\iff x=\pm\sqrt9\to \boxed{x=-3\ or\ x=3}\n\nAnswer:\boxed{x=-3\ or\ x=2\ or\ x=3}

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Answers

51+15<=3w-15+15<=204+15    66<=3w<=219   66/3<=3w/w<=219/3   the answer22<=w<=73  all real number between and including 22 and 73

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Answers

3 x + 25 = 3.5 x
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Answers

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