The percent amounts of sand in 5 soil samples from the same garden are 73%, 68%, 88%, 74%, 81%. What is the average percent of s
2 answers:
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Hi there!
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I believe your answer is:
(0.286, 5.587)
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Here’s why:
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- I have graphed the two equations in a program. When graphed, the lines intersect at point (0.286, 5.587).
- See the graph attached.
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Hope this helps you. I apologize if it’s incorrect.
Answer:
The correct answer is
(0.0128, 0.0532)
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of , and a confidence interval
, we have the following confidence interval of proportions.
In which
Z is the zscore that has a pvalue of
For this problem, we have that:
In a random sample of 300 circuits, 10 are defective. This means that and
Calculate a 95% two-sided confidence interval on the fraction of defective circuits produced by this particular tool.
So = 0.05, z is the value of Z that has a pvalue of
, so
.
The lower limit of this interval is:
The upper limit of this interval is:
The correct answer is
(0.0128, 0.0532)