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Elis [28]
4 years ago
9

Two random samples were done to determine how often people in a community go to the dentist the first sample surveyed 10 people

as they enter their workplaces. The first sample found that the mean time between visits to the dentist with 7.5 months. The second sample survey 50 people as they enter the local grocery store. The second simple found that the mean time between visits to the dentist is 18.1 months. Which statements are true check all that apply
Mathematics
1 answer:
Murljashka [212]4 years ago
6 0

Answer:

2) The second sample is likely to be more representative of the population.

3)The second sample will give a better representation because it is larger.

5) Community members probably visit the dentist about once every 18 months.

Step-by-step explanation: Just did this on Edge

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Step-by-step explanation:

1/3πr^2h

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[(1/3)×(22/7)×4×6)}m^3

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schepotkina [342]
1) 3/5=9/x (cross multiply<span>)
3x=5(9)
3x=45
x=15

2) </span>2/4=x/12   (cross multiply<span>)
</span> 2(12)=4x
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<span>       6=x

</span>3) 10/x=5/9   (cross multiply<span>)
   10(9)=5x
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4) 5/6=x/18
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4 years ago
Which of these is expression is equivalent to z+z+z+z ​
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Answer:

4z

Step-by-step explanation:

6 0
3 years ago
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13.33 is the correct answer

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I need help ASAP! No decimals locate it or plot it!!!
iVinArrow [24]

Answer:

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Step-by-step explanation:

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Then you do the same for -1 3/4. You start at -1 and move 3 places to the right.

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