2 years ago

Can a matrix with dimensions of 2 X 4 be added to another matrix with dimensions of 2 X 4?

Mathematics

1 answer:

sineoko [7]2 years ago

3 0

Answer:

of course

Step-by-step explanation:

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=(new-old)/old *100%
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2 years ago

Customers arrive at a movie theater at the advertised movie time only to find that they have to sit through several previews and

sergij07 [2.7K]

Answer:

a) sample size is 40

Step-by-step explanation:

(a)

$\sigma=4$ minutes

Margin of error, E is 75 seconds E=75/60= 1.25 minutes.

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For 95% confidence interval $z_{\frac{\alpha}{2}}=1.96$ from standard deviation table

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Rounding off, n=40

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Keywords:

95% confidence, sample size, Wall Street Journal

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Answer:

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Step-by-step explanation:

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