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dybincka [34]
3 years ago
5

F(x) = -22 - 72-5 Find f(-5)

Mathematics
1 answer:
rusak2 [61]3 years ago
6 0

Answer:

f(-5) = 5

Step-by-step explanation:

Step 1: Define

f(x) = -x² - 7x - 5

f(-5) is x = -5

Step 2: Substitute and Evaluate

f(-5) = -(-5)² - 7(-5) - 5

f(-5) = -25 + 35 - 5

f(-5) = -25 + 30

f(-5) = 5

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Answer:

(0.582-0.485) - 1.64 \sqrt{\frac{0.582(1-0.582)}{144796} +\frac{0.485(1-0.485)}{211693}}=0.0942  

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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.  

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p_A represent the real population proportion female for Biology

\hat p_A =\frac{84199}{144796}=0.582 represent the estimated proportion female for biology

n_A=144796 is the sample size for A

p_B represent the real population proportion female for calculus AB

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The confidence interval for the difference of two proportions would be given by this formula  

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