URGENT!!! A factory process requires 3 steps to finish a product. The steps each have a mean completion time of A= 10 seconds and a standard deviation of o = 5 seconds. The time it takes to complete each step is independent from the other steps. Let T be the total completion time for the 3 steps.

Find the standard deviation of T.

Choose 1 answer:

OT = 15 seconds

Or = 75 seconds

or 15 seconds

or = v75 seconds

Answers

Answer 1

Answer:

d

Step-by-step explanation:

Answer 2

The standard deviation of T is equivalent to 5.

What is standard deviation?In statistics, the standard deviation is a measure of the amount of variation or dispersion of a set of values. A low standard deviation indicates that the values tend to be close to the mean (also called the expected value) of the set, while a high standard deviation indicates that the values are spread out over a wider range.Mathematically, we can write -

       [tex]$\sigma={\sqrt {\frac {\sum(x_{i}-{\mu})^{2}}{N}}}[/tex]

Given is that a factory process requires 3 steps to finish a product. The steps each have a mean completion time of A = 10 seconds and a standard deviation of O = 5 seconds. The time it takes to complete each step is independent from the other steps.

We can write that -

5 = √∑(x{i} - 10)²/√3

√∑(x{i} - 10)² = 5√3

(√∑(x{i} - 10)²)² = (5√3)²

∑(x{i} - 10)² = 25 x 3

∑(x{i} - 10)² = 75

Now, we can write that -

σ = √(75/3)

σ = √25

σ = 5

Therefore, the standard deviation of T is equivalent to 5.

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Related Questions

1/6 - 3/9 - 3/8 ayúdenme plis​

Answers

Answer:

-39/72 ó -13/24

Step-by-step explanation:

las fracciones convertidas son 12/72 - 24/72 - 27/72


Question in pic help plz


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The answer would be C!!!!

no i wont help u (⌐■_■)

If 4 cats enter a room and 3 leave how many monkey are in the water?

Answers

Answer:

1 monkey because it ate one of the cats

Step-by-step explanation:

Answer:

3 cats in 3corners

Step-by-step explanation:

the question is incorrect the correct question is  IN A SQUARE ROOM THERE ARE 4 CATS IN EVERY CORNER?

Hey there !!!!

If you read that there are 4 cats in the room and in front of each cat is another 3 cats, then it might lead you to the answer of 16. This is not correct.

You will have reached this answer if you assumed that there was 3 cats in front of every cat in the corner. That would mean 4 cats in every coner.

You can reach this answer by dissecting each statement in the riddle. The first statement, “In a square room there are 4 cats in every corner of the room,” then we know that the room is square with 4 corners and that there are 4 cats to begin with.

The second statement of the riddle reads “In front of each cat there are 3 cats.” As we already know from the first statement that there are 4 cats in the room, each cat will see the other 3 cats in the other 3 corners of the room.

hope it helped

Brandi sells 20 cookies for $10.00. How much money will she make if she sells 72 cookies?

Answers

Answer:

he will make $36

Step-by-step explanation:

20 cookies for 10 dollars = 2 cookies for 1 dollar, so we have to do 72 divided by 2 which is 36

HELP PLSSS IM BEGGING YALL

Answers

Answer:

um go eat a PoTAto cause they are good :(

180-65=115/5=21 is the answer

1/3 (x – 10) = -4, x =

Answers

Answer:

Step-by-step explanation:

Divide both sides by 1/3, which is equivalent to mulitplying by 3

x - 10 = -12

Add 10 to both sides

x = -2


(b) What per cent is1/2
dozen of one score?

Answers

Answer:

1/2 dozen of one score is 30%.

Step-by-step explanation:

As we know that 1 dozen = 12 units.

1/2 dozen = 1/2 times 12=6 units

1 score = 20 units.

By using this conversion, we get

6/2 times 100=30%

So 1/2 dozen of one score is 30%

PLS help me. i need to get this right for a graded homework assignment

Answers

Answer:

934.14

Step-by-step explanation:

Answer:

no hey sis

Step-by-step explanation:

Solving factored equations. Does anybody have an example problem that they can show me?

Answers

Answer:

is this what you mean or something else?

What is the interest earned on $3,000 at a rate of 0.04 for 3 years? (Hint: Use the formula i = prt , where i represents the interest earned, p represents the principal, r represents the rate, and t represents the time.)

$3,360
$3,003.04
$360
$120

Answers

Answer:

$360

Step-by-step explanation:

You have to calculate the interest earned on $3,000, at the rate of 0.04 for 3 years.

P= $ 3000, R= 0.04 and t= 3 years.

3000 × 0.04 × 3= $360 (Answer)

Hope that helps

Have a good day :)

Answer:

$360.

Step-by-step explanation:

The interest earned on principal P, at the rate of r for the duration of t years is given by the equation I = Prt ........... (1)

Now, we have to calculate the interest earned on $3000, at the rate of 0.04 for 3 years.

Here, P = $3000, r = 0.04 and t = 3 years.

Hence, from equation (1), Interest earned, I = 3000 × 0.04 × 3 = $360 (Answer)

(Please help!!)

The length (l) of a retangular box is 5 centimeters more than twice its width (w).

Write an equation to represent the length of the rectangular box.

Answers

Answer:

l = 5 + 2w

_______

Joe borrowed $9,000 from the bank at a rate of 7% simple interest per year. How much interest did he pay in 7 years?

Answers

Answer:

4410

Step-by-step explanation:

7% simple interest per year for 7 years so 7x7=49

49 % to pay overall so type 49% x 9,000=4410

Hey I'm Chloe, can you help me. Thank you :)
1. Write your answer with the number only, for example 555.
I think it's 132 But I'm not sure.

Answers

Answer:

132

Step-by-step explanation:

The line = 180 and CBD = 48. 180-28= 132. Also, CA is obtuse.

Answer:

132

Step-by-step explanation:

A circular mirror has a circumference of 50p inches. What is the radius of the mirror?

Answers

Answer:

Step-by-step explanation:

Your answer

I think you should clear what is p. I Can't understand that properly. So i take that pie

Circumference = 2* pie * r

2* pie * r = 50 pie

r = 25

Mark it as Brainlist answer. Follow me.

what are all the expressions that are equal to 16x-12-24x+4

Answers

Answer:

-8x-8

Step-by-step explanation:

Answer:

The equation equal to 16x - 12 - 24x + 4 is -8x - 8

Step-by-step explanation:

  16x - 12 - 24x + 4

= 16x - 24x - 12 + 4

= -8x - 8

Write the coordinates of the vertices after a translation 2 units right and 8 units down
P(-8, 7)
Q(-8, 10)
R(-5, 10)
S(-5, 7)

Answers

Answer:

-6,-1

-6,2

-3,2

-3,-1

Step-by-step explanation:

imagine the coordinates on a graph

moving right adds

moving left subtracts

moving down subtracts

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Solve the equation 3x^2+x-5=0

Answers

Answer:

Step-by-step explanation:

Use the quadratic equation, with a = 3, b = 1 and c = -5

Discriminant b^2 - 4ac is 1 - 4(3)(-5) = 61

Because the discriminant is + there are two real, unequal roots:

     

      -1 ± √61

x = ---------------

            6

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Answers

It is 3 groups. Because the max of 3/4 is 9/4

Just a few questions! Help if you want to be kind today! Or help someone in a different way! Not free!

Answers

Answer:

Answer For Question 30: 7 3/8

Step-by-step explanation:

I just Basically  Added all the Sums together to finally get the Answer.

The distributive property:
a. 7.4x + 0 = 7.4x
b. 2.7(x + y) = 2.7x + 2.7y
c. 7z x 1 = 7z
d. (2.3 + 3a) + 5a = 2.3 + (3a + 5a)
e. z(0.2) = 0.2z
f. 0.2(5 x w) = (0.2 x 5) x w
g. 2.73 + x = x + 2.73

Answers

I think the answer is c I hope this helps
I’m pretty sure it’s c!<3

Parker simplified the expression y2-5 (y+y2+8y+16/y+4)-12 as shown below. Which statement best describes Parker's error?

Answers

Answer:

he distributed -5 incorrectly

Answer:

D one Edge 2021 ;))

Step-by-step explanation:

Please help me with this desmos problem

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Step-by-step explanation: You plot both lines and find the intersection and just say the y value of the intersection point.

Answer:

Step-by-step explanation:

substitute x=10 in either eq. to find the value of y.

y=2x+7=2×10+7=20+7=27

y=27

In a fruit cocktail for every 100ml Orange juice you need 12ml Apple juice and 8ml of coconut milk what is the ratio of Apple juice to coconut milk to orange juice expressed in its simplest form

Answers

12:8:100= 3:2:25 is the simplest form

A DVD player was $160 originally. The store offered a 10% discount. What was the sale price of the DVD player? $150 $160 $170 10% discount $176 $144 Reset Submit​

Answers

Answer:

Step-by-step explanation:

Your answer

Sale price = 144$

Mark it as Brainlist. Follow me for more answer.

if you roll a foir number of cube four times you are going to most likely get 2,3,1,6 of 6,6,6,6

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A. 3
B. 2
C. 1
D. 0

Answers

A) 3. In this case, you can draw one down the middle, one on top, and one on the bottom.

The total number of common tangents that can be drawn to the circles is 3 Hence, the correct option is (A).

What is tangent?

The tangent is a line that goes by touching the circle.

If we meet that point to the circle then it gives us 90 degrees.

Given that the circle are intersecting so a common tangent will be

The First will be at the intersection point of that circle.

The second will be the upper portion of the circle.

The third will be the lower portion of the circle.

For more information about the common tangents.

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This side of square S is twice the diameter of circle C what is the greatest possible number of points of intersection of perimeter of square S and the circumference of circle C

Answers

Answer:

2

Step-by-step explanation:

C is too small to have more.

Help plz I WILL GIVE BRAINLIEST JUST PLZ HELP

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Answer:

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Step-by-step explanation:

3x-4=107

add 4 on both sides

3x=111*

x=37

Answer:

x = 37°

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Step-by-step explanation:

107°+ 4° = 111

3x = 111°

x = 37°

360 - 214 = 146°

146 / 2 - 73°

Maine has a cold climate in the winter. Which statement about the probability of temperatures falling below 32°F in Maine during the month of January is most likely true? The probability is closer to 1 than to 0. The probability cannot be determined before February. The probability is 100. The probability could be -1.​

Answers

Answer:

the probability is 100

this is the most suitable ans

Find the median for 5, 3, 6, 5, 2, 9

Answers

Answer:

5

Step-by-step explanation:

5 is the median

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