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elena-14-01-66 [18.8K]

3 years ago

7

True/ False: a sample of 100 fuses from a very large shipment is found to have 10 that are defective. The 95% confidence interva

l would indicate that, the propotion of defective fuses is between 0 and 0.28.

1 answer:

Kobotan [32]3 years ago

3 0

Answer:

False

Step-by-step explanation:

These questions depend on sample size, which in this case, it'd not fall between 0 and .28.

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Find the complex fourth roots \[-\sqrt{3}+\iota \] in polar form.

____ [38]

Let $z=-\sqrt3+i$ . Then

$|z|=\sqrt{(-\sqrt3)^2+1^2}=2$

$z$ lies in the second quadrant, so

$\arg z=\pi+\tan^{-1}\left(-\dfrac1{\sqrt3}\right)=\dfrac{5\pi}6$

So we have

$z=2e^{i5\pi/6}$

and the fourth roots of $z$ are

$2^{1/4}e^{i(5\pi/6+k\pi)/4}$

where $k\in\{0,1,2,3\}$ . In particular, they are

$2^{1/4}e^{i(5\pi/6)/4}=2^{1/4}e^{i5\pi/24}$

$2^{1/4}e^{i(5\pi/6+2\pi)/4}=2^{1/4}e^{i17\pi/24}$

$2^{1/4}e^{i(5\pi/6+4\pi)/4}=2^{1/4}e^{i29\pi/24}$

$2^{1/4}e^{i(5\pi/6+6\pi)/4}=2^{1/4}e^{i41\pi/24}$

7 0

3 years ago

<img src="https://tex.z-dn.net/?f=13%20%3D%20w%20-%2014%20%5Cdiv%202" id="TexFormula1" title="13 = w - 14 \div 2" alt="13 = w -

Daniel [21]

Your answer is going to be 21 u just subract from the number to get ur answer

6 0

3 years ago

Use the table to identify the value of p and q that should be used to factor x^2-3x-10 as (x+p)(x+q) I’ve seen the answer with p

Elza [17]

Answer:

1

Step-by-step explanation:

1 is the right answer for this question

3 0

3 years ago

Find the intersection point between the lines of equations:<br><br>2x-y+6=0 and 2x+3y-6=0

Ugo [173]

Step-by-step explanation:

The two equation will intersect each other at the point which will be the solution of the given two equations , and the given equations are ,

$\implies 2x -y +6=0\\\\\implies 2x + 3y -6=0$

On subtracting the given equations we have,

$\implies -y - 3y +6 -(-6) = 0 \\\\\implies -4y = -12 \\\\\implies y = -12/-4\\\\\implies y = 3$

Put this value in any equation , we have ,

$\implies 2x -3 +6 =0\\\\\implies 2x = -3 \\\\\implies x =\dfrac{-3}{2} \\\\\implies x =-1.5$

Hence the lines will Intersect at ,

$\implies\underline{\underline{ Point=(-1.5, 3)}}$

8 0

2 years ago

Read 2 more answers

Graph this function: f(x)=x2-4x-5

Maksim231197 [3]

A would be 1 as b would be -4

6 0

3 years ago