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AysviL [449]
3 years ago
5

George does not like the fact that his neighborhood makes it mandatory to pay a yearly fee to use the pool. He conducts a survey

of all the neighborhood families to help support his case that the yearly fee should be voluntary. The survey asks questions about pool usage and financial statistics of the families. Is this a valid survey? Why or why not?
A) No, George should only survey families that support his view.
B) No, George should attach information about why the fee should be voluntary.
C) Yes, since George is trying to convince the board to change the requirement he needs results to support his opinion.
D) Yes, since George is surveying all of the families in his neighborhood he is getting the opinions of the entire population.
Mathematics
2 answers:
murzikaleks [220]3 years ago
7 0

Answer:

I would pick the letter C

Step-by-step explanation:


trasher [3.6K]3 years ago
4 0

Answer:

C

Step-by-step explanation:

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Is there a transformation that maps shape 1 onto shape 4?
Llana [10]

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1 place to the left and 2 places down

Step-by-step explanation:

(+1,-2)

5 0
4 years ago
An arc on a circle measures 85°. The measure of the central angle, in radians, is within which range? 0 to StartFraction pi Over
barxatty [35]

Answer:

0 to StartFraction pi Over 2

Step-by-step explanation:

we know that

If the arc on a circle measures 85 degrees, then the measure of the central angle is also 85 degrees too

so

The central angle in degrees is within the range (0,90^o)

Convert to radians

Remember that

\frac{\pi}{2}\ radians=90^o

therefore

the range in radians is (0,\frac{\pi}{2})

0 to StartFraction pi Over 2

3 0
4 years ago
Read 2 more answers
P: It's sunny.
lapo4ka [179]

Answer:

I think the answer is c

Step-by-step explanation:

please give me brainlist

5 0
3 years ago
In a study of 250 adults, the mean heart rate was 70 beats per minute. Assume the population of heart rates is known to be appro
klasskru [66]
This is a good question!

The steps are like follows:

Form the confidence level (99%), we calculate the "alpha" value
alpha=1-(99/100)=0.01

Now, calculate the critical probability (p-start)
p*=1-(alpha/2)=1-(0.01/2)=0.995

z-score could be calculated from p*,,,
z-score=<span>2.57583
(http://www.socscistatistics.com/tests/ztest/zscorecalculator.aspx)

Now, calculate the Margin of Error:
</span>standard<span> deviation = s
number of adults = n
</span><span>
ME=(z*s)/(sqrt n)=(</span><span>2.57583*12)/(sqrt 250) = 1.955

The confidence interval = mean +or- ME
                                      = 70+1.955</span>  or  70-1.955


So that we can conclude that <span>the 99% confidence interval for the mean beats per minute is 68.045 and 71.955

</span>

I hope you got the idea!

If you still need help, just let me know!





4 0
3 years ago
A number y decreased by 9 is 8<br> An equation that represents this sentence
Masja [62]

Answer:

Y-9=8

Step-by-step explanation:

Y is decreased by 9 in just say 9 is subtracted by y

8 0
3 years ago
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