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4 years ago

Estimate then record the product $53x4

Mathematics

2 answers:

Oksana_A [137]4 years ago

8 0

The answer is 212 you can estimate the answer to be 200

Citrus2011 [14]4 years ago

3 0

You do 53 times 4 and you get 212 because when you estimate it's 212.

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Step-by-step explanation:

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3 years ago

The amount that Ronnie earns, E, in terms of the number of hours that he works, h, is shown in

cestrela7 [59]

Answer:

Step-by-step explanation:

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4 0

3 years ago

In order to officailly bid on a contract, a contractor wants to be 95% confident that his error is less than two hours in estima

iVinArrow [24]

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Step-by-step explanation:

Formula to find the sample size : $n=(\dfrac{\sigma\times z_{\alpha/2}}{E})^2$

Given : Significance level : $\alpha=1-0.95=0.05$

Critical value : $z_{\alpha/2}=1.96$

Margin of error : $E$

Standard deviation: $\sigma=\text{ 4.5 hours}$

Then, we have

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Hence, the minimum sample size must be 20.

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4 years ago