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Murljashka [212]
2 years ago
7

11. Zane has 10 chapters to read in his book before Friday. He

Mathematics
1 answer:
stealth61 [152]2 years ago
8 0

Answer:

2

Step-by-step explanation:

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kkurt [141]
I don’t know the answer but I can tell you how to do it subtract starting value minus final value divide that amount by the absolute value of the starting value multiply by 100 to get percent decrease if the percentage is negative it means there was an increase not a decrease
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2 years ago
Question 12 options:
marshall27 [118]

Answer:

sdad

Step-by-step explanation:

5 0
2 years ago
It costs $42 for 7 staplers. what is the unit rate for the stapler?
murzikaleks [220]

Answer:

The answer is 6

Step-by-step explanation:

42 divided by 7=6

5 0
3 years ago
The National Center for Education Statistics reported that 47% of college students work to pay for tuition and living expenses.
Luden [163]

Using the z-distribution, it is found that the 95% confidence interval for the proportion of college students who work to pay for tuition and living expenses is: (0.4239, 0.5161).

If we had increased the confidence level, the margin of error also would have increased.

<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. Increasing the confidence level, z also increases, hence the margin of error also would have increased.

The sample size and the estimate are given as follows:

n = 450, \pi = 0.47.

The lower and the upper bound of the interval are given, respectively, by:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.47 - 1.96\sqrt{\frac{0.47(0.53)}{450}} = 0.4239

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.47 + 1.96\sqrt{\frac{0.47(0.53)}{450}} = 0.5161

The 95% confidence interval for the proportion of college students who work to pay for tuition and living expenses is: (0.4239, 0.5161).

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

#SPJ1

5 0
1 year ago
Mia hiked 2 1/2 miles farther than Jacob.Which could be the two distances each person hiked?
Kruka [31]
M= J+2 1/2
So J+M would equal there total distance
5 0
2 years ago
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