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2 years ago

14

A polling firm is conducting research on Internet use by calling the landline telephone of every tenth person listed in a local

phone book. What bias may exist in the method they are using to do the poll?

1 answer:

denis-greek [22]2 years ago

7 0

Younger people don't own landline telephones so you are limiting your voter demographic to older people by calling them more than younger people.

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What is the difference between the average and the geometric mean?

sveticcg [70]

The difference between the two is: Your Mom!

3 0

3 years ago

Help me plz idk how

Alika [10]

Hello there,

For problem one
The mile is an appropriate unit to measure the distance run over a one-week period.

For problem two
The pound is an appropriate unit to measure the weight of a bag of sugar.

For problem three
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3 years ago

Two houses on the same side of the street have house numbers that are consecutive

DochEvi [55]

Answer:

28 and 30

Step-by-step explanation:

'x' = 1st consecutive #

'x+2' = 2nd consecutive #

x + x+2 = 58

2x + 2 = 58

2x = 56

x = 28

x+2 = 30

3 0

2 years ago

What is the measure of angle J in the triangle below? <br> A. 99<br> B. 42 <br> C. 9<br> D. 48

Leya [2.2K]

For this use the law of sines:
$\sin( \alpha ) \div a = \sin( \beta ) \div b \\ \sin( \alpha ) \div 11 = \sin(103) \div 16$
$\frac{ \sin( \alpha ) }{11} = \frac{0.97}{16}$
cross-multiply:
16×sin (J) = 11×0.97
sin(J) = 10.72/16
sin(J) = 0.67
hit the "arcsin" button on your calculator:
${ \sin}^{ - 1} (0.67) = 42.06 = 42.1 \: deg$
therefore answer B. 42 is the correct answer!!

4 0

3 years ago

How to solve this problem

Arisa [49]

First, you solve the square root:

$9+ \sqrt{-4}$

Knowing that the square root of a negative number doesn't exist:

$9+ \sqrt{-4}$
$9+2i$ is your answer.

Hope it helped,

Happy homework/ study/ exam!

4 0

3 years ago