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3 years ago

13

the library surveyed 240 people about their favorite type of movie if 15% of the people chose documentaries how many people chos

e documentaries

1 answer:

Karolina [17]3 years ago

5 0

240 x 0.15 = 36 people chose documentaries

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Solve the system of equations by elimination and identify which could be a first step of the elimination method for the system.

Alecsey [184]

3x+2y=24
Times 2
6x+4y=48
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6x+2y=30
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3 years ago

the standard deviation of 100 random samples of the same size is approximated to be 0.98. what is the margin of error

pogonyaev

Answer:

MOE= ± 0.098

Step-by-step explanation:

-The margin of error is calculated using the formula:

$MOE=\pm \frac{\sigma}{\sqrt{n}}$

#Substitute to solve for MOE:

$MOE=\pm \frac{\sigma}{\sqrt{n}}\\\\=\frac{0.98}{\sqrt{100}}\\\\=\pm 0.098$

Hence, the margin of error is ± 0.098

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Step-by-step explanation:

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