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Montano1993 [528]
3 years ago
5

The police department of a city with a population of 250000 wants to know how many residents wear their seatbelts regularly. whi

ch sample size would make the study most reliable?
A. 2500
B. 250
C. 5
D. 25

Mathematics
2 answers:
Alex Ar [27]3 years ago
4 0
A 2500 you want the biggest sample size possible for more accurate results
Tanzania [10]3 years ago
3 0

Answer:

Option A is correct.

Step-by-step explanation:

Given:

Population of the city is 250,000

Police department wants to know how many residents wear their seat belts regularly.

To find: Sample size for the study which make it most reliable.

Most reliable study means study which produce most accurate result.

We know that a study can produce most accurate result only when the sample size if as possible large.

So, among given options Only Possible Sample Size is 2500

Therefore, Option A is correct.

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Answer:

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Step-by-step explanation:

Steps

$5\left|x-2\right|+4>8$

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$5\left|x-2\right|+4-4>8-4$

$\mathrm{Simplify}$

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$\mathrm{Divide\:both\:sides\:by\:}5$

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$\mathrm{Simplify}$

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$\mathrm{Apply\:absolute\:rule}:\quad\mathrm{If}\:|u|\:>\:a,\:a>0\:\mathrm{then}\:u\:<\:-a\:\quad\mathrm{or}\quad\:u\:>\:a$

$x-2<-\frac{4}{5}\quad\mathrm{or}\quad\:x-2>\frac{4}{5}$

Show Steps

$x-2<-\frac{4}{5}\quad:\quad x<\frac{6}{5}$

Show Steps

$x-2>\frac{4}{5}\quad:\quad x>\frac{14}{5}$

$\mathrm{Combine\:the\:intervals}$

$x<\frac{6}{5}\quad\mathrm{or}\quad\:x>\frac{14}{5}$

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