3 years ago

Which of the following is equivalent to 5−1?

Mathematics

1 answer:

Troyanec [42]3 years ago

5 0

Answer:

what r the options

Step-by-step explanation:

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Step-by-step explanation:

If each assignment is worth -3, you can divide 18 (amount of points changed) by 3 (each assignment's affect) to get 6.

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The number of DVDs in a random person’s home collection is counted for a sample population of 80 people. The mean of the sample

VLD [36.1K]

Answer:

$E = 3.46\ movies$

Step-by-step explanation:

The formula to find the error is:

$E = z_{\frac{\alpha}{2}}\frac{\sigma}{\sqrt{n}}$

Where:

$\sigma$ is the standard deviation

n is the sample size

n = 80 people

$\sigma$ = 12 movies

Then

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$\alpha= 1-0.99$

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We look for the Z value: $Z_{0.005}$

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Therefore:

$E =2.58*\frac{12}{\sqrt{80}}\\\\E = 3.46\ movies$

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