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7nadin3 [17]
3 years ago
9

Please help! Thanks!: If a 95% confidence interval was being calculated using the following expression:

Mathematics
1 answer:
Roman55 [17]3 years ago
4 0

The confidence interval can be calculated from the margin of error, and vice versa,

The margin of error of the confidence interval is 2.156

The confidence interval is given as:

\mathbf{CI = 3.2 \pm 1.96 \cdot 1.1}

The formula of confidence interval is:

\mathbf{CI = \bar x\pm E}

Where E represents the margin of error.

So, by comparison:

\mathbf{E = 1.96 \cdot 1.1}

Multiply

\mathbf{E = 2.156}

Hence, the margin of error of the confidence interval is 2.156

Read more about margin of errors at:

brainly.com/question/13990500

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We can use quadratic formula to determine the roots of the given quadratic equation.

The quadratic formula is:

x= \frac{-b+- \sqrt{ b^{2} -4ac} }{2a}

b = coefficient of x term = -11
a = coefficient of squared term = 2
c = constant term = 15

Using the values, we get:
x= \frac{11+- \sqrt{121-4(2)(15)} }{2(2)} \\  \\ 
x= \frac{11+-1}{4} \\  \\ 
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Line CD passes through points C(3, –5) and D(6, 0). What is the equation of line CD in standard form?
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Multiply.<br><br> (3x+2)(2x−5)<br><br><br> 6x^2+4x−3<br> 6x^2−10<br> 6x^2−11x−10<br> 6x^2−13x−3
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Answer: Heyaa! ^^

Your Answer when multiplied is.. 6x²−11x−10

Step-by-step explanation:

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  • Expand the polynomial using the FOIL method.

                    - FOIL EXPLANATION -

  • A handy way to remember how to multiply two binomials.

It stands for "First, Outer, Inner, Last"

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· multiplying the First terms,

· multiplying the Outer terms,

· multiplying the Inner terms, and

· multiplying the Last terms

<em>Hopefully this helps you! ~</em>

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The population of Chicago, Illinois, in 2003 was 2,869,121. The area of Chicago was 227.1 square miles. What was the average num
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Answer:

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Step-by-step explanation:

population of Chicago, in 2003 = 2,869,121

The area of Chicago = 227.1 square miles.

What was the average number of people living in 1 square mile?

Average number of people living in 1 square mile also refers to the population density of Chicago

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Approximately

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