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2 years ago

The purpose of a confidence interval is to provide __________________.

Mathematics

1 answer:

netineya [11]2 years ago

4 0

Answer:

D) plausible values that a parameter could take

Step-by-step explanation:

Confidence interval is estimated range of values for a population parameter could take in a given confidence level.

It can be represented as M±ME where

M is the point of estimate

ME is the margin of error

Confidence Intervals is measured to deal with uncertainty. For example, 95% confidence interval for a population mean is (25, 35) means that there is 95% chance that population mean is between the values 25 and 35.

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(Will give Brainliest, these are angle relationships) Please help, and show work, what relationship is it and set up an equation

Vanyuwa [196]

Answer:

Supplementary, 39+5x=180, x=28.2

Step-by-step explanation:

So we know that a straight line is 180 degrees, therefore 52+(5x-13) must equal 180. This is a supplementary relationship. That's our equation, now we just have to solve.

52+5x-13=180

We can straight away combine numbers, giving us

39+5x=180

Now we subtract 39 from both sides, giving us

5x=141.

Now we will answer.

141/5=28.2=x

I'm not sure if this is right, but this is my answer :)

4 0

2 years ago

Read 2 more answers

A cardboard box without a lid is to be made with a volume of 44 ft3. Find the dimensions of the box that requires the least amou

-BARSIC- [3]

Answer:

x = 3.53 ft

y - 3.53 ft

z = 3.53 ft

Step-by-step explanation:

given details

volume = 44 ft^3

let cardboard dimension is x and y and height be z

we know that area of given cardboard without lid is given as

A = xy + 2xy + 2yz

xyz = 44 ft^3

To minimize area we have

A = xy + 2x (44/xy) + 2y(44/xy)

A = xy + (44/y) + (44/x)

we have

$Ax = y - \frac{44}{x^2}$

$0 = yx^2 = 44$ ................1

$Ay = x - \frac{44}{y^2}$

$0 = x - \frac{44}{y^2}$

$xy^2 = 44$ ..............2

from 1 and 2

$yx^2 = xy^2$

xy(y-x) = 0

xy = 0 or y = x

from geometry of probelem

x ≠ 0 and y ≠ 0

so y = x

x^3 = 44

x = 3.53 ft = y

z = 44/xy = 3.53

6 0

3 years ago

What is the length of the unknown side of the right triangle?

a_sh-v [17]

Answer:

7 O ⋅ ( 24 h O ) ⋅ ( 25 O ) ⋅ 31 . X ⋅ 7 = 7 X 24 = 7 X 7 O ⋅ ( 24 h O ) ⋅ ( 25 O ) ⋅ 31 = 130200 O 3 h

3 0

2 years ago

Would I do Pythagorean theorem?

kati45 [8]

Yes you do , i learned pythagorean theorem last year in pre-algebra

4 0

3 years ago

Read 2 more answers

Solve 2csc^2x-2cscx-1=0 for 0° ≤ x ≤ 360°

umka21 [38]

Answer:

Step-by-step explanation:

2 csc²x-2 csc x-1=0

$\frac{2}{sin^2x} -\frac{2}{sin x} -1=0\\multiply~by~sin^2x\\2-2sin~x-sin^2x=0\\sin^2x+2sinx-2=0\\sin ~x=\frac{-2 \pm\sqrt{2^2-4*1*(-2)} }{2*1} \\=\frac{-2 \pm\sqrt{4+8} }{2} \\=\frac{-2 \pm\sqrt{4*3} }{2} \\=\frac{-2 \pm2\sqrt{3} }{2} \\=-1\pm\sqrt{3} \\|sin~x| \le ~1\\so~sin~x=-1+\sqrt{3} \\sin~x=\sqrt{3} -1\\x=sin^{-1}(\sqrt{3} -1) \approx 47.06^\circ,180-47.06\\or~x=47.06^\circ,132.94^\circ$

6 0

2 years ago