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damaskus [11]
3 years ago
8

It has been estimated that as many as 70% of the fish caught in certain areas of the Great Lakes have liver cancer due to the po

llutants present. Find an approximate 95% range for the percentage of fish with liver cancer present in a sample of 130 fish.
Mathematics
1 answer:
Likurg_2 [28]3 years ago
7 0

Answer:

62.12% to 77.88%

Step-by-step explanation:

We proceed as follows mathematically;

From the question

n=130

Estimate for sample proportion=70% = 70/100 = 0.7 = p

Level of significance is =1-0.95=0.05

Z critical value(using Z table)=1.96

Confidence interval formula is ;

p ± Z * √(p(1-p)/n

= 0.70 ± √(0.7(1-0.7)/130

=(0.6212,0.7788)

Lower confidence interval limit =0.6212

Upper confidence interval limit =0.7788

In percentages , we simply multiply by 100 in both cases =

62.12 % to 77.88%

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yanalaym [24]

Answer:

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Step-by-step explanation:

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3 years ago
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3 years ago
(9•4)•18 = 9•(4•18)<br><br><br> A True <br> B. False
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Step-by-step explanation:

7 0
3 years ago
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Allison measured a line to be 5.4 inches long. If the actual length of the line is 5.5 inches, then what was the percent error o
valentina_108 [34]

Answer:

1.85%

Step-by-step explanation:

→ Find the difference between the actual and predicted

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→ Multiply answer by 100

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