Please help Due in 3 Min!

Mathematics

1 answer:

iren2701 [21]3 years ago

7 0

The answer is 32 I really hope this helps with

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Can someone help :0 not sure how to solve but I'm doing algebra if that helps

Rus_ich [418]

Answer:r = d/t

Step-by-step explanation:

1. If we are solving for r, we need to have r on one side of the equation.

2. Divide by t on both sides = d/t=r

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Giovanna and Janet have jobs where they get paid by the hour .Below are the numbers of hours of each have worked on each of the

Harman [31]

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3 years ago

One person wants to get a 95% z-confidence interval with a margin of error of at most 15 based on a population standard deviatio

Bess [88]

Answer:

$n=(\frac{1.96(60)}{15})^2 =61.46 \approx 62$

So the answer for this case would be n=62 rounded up to the nearest integer

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

$\bar X$ represent the sample mean for the sample