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2 years ago

Solving inequalities unit portfolio task 2-3?

Mathematics

1 answer:

Elden [556K]2 years ago

4 0

Answer:

What is the question from Solving inequalities unit portfolio task 2-3?

Step-by-step explanation:

Comment it down below and I will solve it! :D

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A ribbon is 1238 feet long. Into how many 34 foot pieces can it be cut?

uranmaximum [27]

Answer:

Step-by-step explanation:

So how we do this is simply divide 1238 by 34 --> 1238/34

Approx 36.41 so we know that the answer is 36 -->

we know that it's not 37 because 36.41 cannot and IS NOT a FULL 37

<u><em>Hope this helps!</em></u>

4 0

3 years ago

The data given to the right includes data from candies, and of them are red. The company that makes the candy claims that % of

Dafna1 [17]

Using the z-distribution, the 95% confidence interval for the percentage of red candies is of (7.84%, 33.18%). Since 33% is part of the interval, there is not enough evidence to conclude that the claim is wrong.

<h3>What is a confidence interval of proportions?</h3>

A confidence interval of proportions is given by:

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which:

$\pi$ is the sample proportion.

z is the critical value.

n is the sample size.

In this problem, we have a 95% confidence level, hence $\alpha = 0.95$ , z is the value of Z that has a p-value of $\frac{1+0.95}{2} = 0.975$ , so the critical value is z = 1.96.

Researching this problem on the internet, 8 out of 39 candies are red, hence the sample size and the estimate are given by:

$n = 39, \pi = \frac{8}{39} = 0.2051$

Hence the bounds of the interval are:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.2051 - 1.96\sqrt{\frac{0.2051(0.7949)}{39}} = 0.0784$

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.2051 + 1.96\sqrt{\frac{0.2051(0.7949)}{39}} = 0.3318$

As a percentage, the 95% confidence interval for the percentage of red candies is of (7.84%, 33.18%). Since 33% is part of the interval, there is not enough evidence to conclude that the claim is wrong.

More can be learned about the z-distribution at brainly.com/question/25890103

#SPJ1

7 0

2 years ago

A $65 meal is put on the table. The couple plans on leaving an 18% tip. How much should be left altogether?

elena-14-01-66 [18.8K]

Answer:

76.70

Step-by-step explanation:

8 0

3 years ago

Write an expression for "the difference of 10 and <br> x.