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Klio2033 [76]
3 years ago
15

Graph linear equation with 3 points 4x-2y=6

Mathematics
1 answer:
Norma-Jean [14]3 years ago
4 0
What are you trying to say
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A 90% confidence interval for the mean height of students
Westkost [7]

Answer:

ME= \frac{69.397-60.128}{2}= 4.6345 \approx 4.635

And the best answer on this case would be:

b) m = 4.635

Step-by-step explanation:

Let X the random variable of interest and we know that the confidence interval for the population mean \mu is given by this formula:

\bar X \pm t_{\alpha/2} \frac{s}{\sqrt{n}}

The confidence level on this case is 0.9 and the significance \alpha=1-0.9=0.1

The confidence interval calculated on this case is 60.128 \leq \mu \leq 69.397

The margin of error for this confidence interval is given by:

ME =t_{\alpha/2} \frac{s}{\sqrt{n}}

Since the confidence interval is symmetrical we can estimate the margin of error with the following formula:

ME = \frac{Upper -Lower}{2}

Where Upper and Lower represent the bounds for the confidence interval calculated and replacing we got:

ME= \frac{69.397-60.128}{2}= 4.6345 \approx 4.635

And the best answer on this case would be:

b) m = 4.635

4 0
3 years ago
A, b, abd c are polynomials, where A=n, B=2n+6, and C=n^2-1 what is AB-C in simplest form?
never [62]
N(2n+6)-(n²-1)= 2n²+6n-n²+1=n²+6n+1
7 0
3 years ago
Brian answered 35 questions, or 70%, correctly on a test. James answered 90% of the questions correctly.
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He answered 50 questions
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Find the value of x in the triangle shown below.<br> 4<br> 5<br> Choose 1 answer
nikitadnepr [17]

Answer:

x=3

Step-by-step explanation:

using the pythagorean theorem, c^2=a^2+b^2

5^2=x^2+4^2, x=3

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3 years ago
Please help i need to turn this in in 20 minutes
steposvetlana [31]

Answer:

Im solving it.

Step-by-step explanation:

4 0
3 years ago
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