A length of chain is to be constructed by placing 36 component links end to end. The length of a link produced by a production process is known to be a random variable with a mean of 2.5 cm with a standard deviation 0.2 cm. The 36 links are chosen at random from this process to produce the chain. The mean and standard deviation of the length of chain are, respectively _________.

a. 90 cm, 7.2 cm
b. 36 cm, 1.2 cm
c. 90 cm, 2.7 cm
d. 90 cm, 1.2 cm
e. 36 cm, 7.2 cm

Answers

Answer 1

Answer:

d. 90 cm, 1.2 cm

Step-by-step explanation:

Given that:

The sample size n = 36

For the  length of the link:

The mean [tex]\overline x[/tex] = 2.5

The standard deviation s = 0.2 cm

In a chosen 36 links, The mean and standard deviation for the length chain is as follows:

Mean = n[tex]\overline x[/tex]

Mean = 36×2.5

Mean = 90 cm

The Standard deviation = s×√n

The Standard deviation = 0.2×√36

The Standard deviation = 0.2×6

The Standard deviation = 1.2 cm


Related Questions

how many eights are there in three and a quater​

Answers

6 .. hope that answers ur question :)

If you bake 3/4 of a cake in 5/6 of an hour, how long does it take to bake 18 cakes

Answers

Answer: 15

Step-by-step explanation: 5/6 times 18 = 15 hours

I think that it would be 20 hours

LMC given numbers 60 and 80​

Answers

Question:LCM of 60 and 80

240 is answer

LCM : least common factor
The least common multiple is 240.

How many kilometers are in 60 miles? Note: There are 1.609kms in 1mi.

Answers

Answer:

Your answer is 96.5606 Kilometers.

Step-by-step explanation:

1.609 x 60 = 96.5606

Mark as brainliest if it's correct!

Answer:

96.5606kms

Step-by-step explanation:

What is the exact value of sin(75°)?

Answers

Step-by-step explanation:

sin 75°: Now using the formula for the sine of the sum of 2 angles, sin(A + B) = sin A cos B + cos A sin B, we can find the sine of (45° + 30°) to give sine of 75 degrees.

Answer:

D.)

Step-by-step explanation:

Edge

It is 11:45 AM when can you put the bread in the oven if the brain needs to bake for 30 minutes what time will the bread finished baking

Answers

Answer:

The bread will be done baking at 12:15

Step-by-step explanation:

11:45+30=12:15

Answer:

12:15 pm

Step-by-step explanation:

30 minutes is two sets of 15 minutes

15+45=60

Therefore, 12:00pm is 15 minutes of back time

Add the second set of 15 minutes and you get 12:15 pm

Can someone help me plz

Answers

Answer:

i think the answer is 7

The answer should be 7

Is (2, 2) a solution of the inequality y < 3x - 5?

Answers

Answer: it’s not a solution or C

Step-by-step explanation:

the given point is (2,2) there is a x value and a y value

so 2 < 3(2)-5 *we know 3*2 is 6 and 6-5 is 1*

2 does NOT equal to 1

Answer:

Third option, It is not a solution.

Step-by-step explanation:

3x + 17 < 47


43<8x-9 can you answer this ASAP please !!!

Answers

Answer:

3x + 17 < 47 solving for x = x<10

43<8x-9 solving for x = x = 13/2

Mario paid $30 to activate his cellular phone plus $50 per month. Type an equation:_

Answers

Answer:

50x + 30

Step-by-step explanation:

50 is the amount per month and x is how many months he's paying. If he's paying for 5 months then you replace x with 5 so on and so forth. the + 30 is the amount he paid to active his phone

Answer:

pa rompa pero no poden con mi pom pom con pom pom con pom pom

Step-by-step explanation:

Solve for f: (-1/8)f - (3/4) -
(1/4)f = 11

Answers

Answer: The answer is f= –31 1/3.

Step-by-step explanation: To solve for f, you’ll need to simplify the both sides of the equation, and then isolating the variable. Use online advanced calculators to calculate the equation to view all the steps.

8 less than the length L

Answers

Answer:

L-8=?

Step-by-step explanation:

To gather data involving their classmates, 50 fourth graders each filled out a personal information survey sheet. In the category of pets, 22 students had a cat, 17 students had a dog, and 9 students had both a dog and a cat. If a student is randomly selected from this class, what is the probability the student will have a dog or a cat

Answers

Answer:

0.60

Step-by-step explanation:

In the category of pets

22 students had a cat = P(C)

17 students had a dog = P(D)

9 students had both a dog and a cat = P(C and D)

The formula to find the Probability of two events =

P(C or D) = P(C) + P(D) - P(C and D)

P(cat or dog) = P(cat) + P( dog) - P(cat and dog)

P(cat or dog) = 22/50 + 17/50 - 9/50

P(cat or dog) = 0.44 + 0.34 - 0.18

P(cat or dog) = 0.60

The probability the student will have a dog or a cat is 0.60

Which expression has the same value as 4÷25 in fraction form

Answers

Answer:

4/25

Step-by-step explanation:

It is a fraction with 4 in the numerator and 25 in the denominator.

4

__

25

David is traveling at a rate of 62 feet per second. Select all of the following rates that are equivalent or approximately equivalent to David’s rate of 62 feet per second.

Answers

Answer:

.68.0314 m/s

.42.272752125mph

68.0314km/h

Step-by-step explanation:

Ebony's bank balance first reached $400 on Day 4. The last day her balance was $400 was Day 8. Look at the picture. Brainliest Answer. Only answer if your 100% sure . ​

Answers

Answer:

I think it is 200

but I am not very sure

whats the area of a circle if the diameter 6

Answers

Answer:

28.27

Step-by-step explanation:

Answer:

18.84

Step-by-step explanation:

6x3.14 = 18.84. multiply by pi

You burn 4 Cal/min walking and 10 Cal/min running. You walk 10 to 20 min each day and run 30 to 45 min each day. You never spend more than an hour running and walking together. How much time should you spend on each activity to maximize the number of Calories you burn? Will you have exercised enough to burn off a 500-Calorie meal? A. 50 minutes running, 10 minutes walking; yes. B. 45 minutes running, 15 minutes walking; yes. C. 40 minutes running, 20 minutes walking; no. D. 30 minutes running, 30 minutes walking; no.

Answers

Answer:

I don’t know how to do the explanation but the answer is 15 min waking and 45 running. I got it right on the test

Step-by-step explanation:

Please help me as soon as possible! :)

1 1/8 + b ≥ 7/16

Answers

Answer: 42

Step-by-step explanation:

Example:

Solve x + 7 < 15

Solution:

x + 7 < 15

x + 7 – 7 < 15 – 7

x < 8

Inequalities Of The Form “x – a < b” or “x – a > b”

Please mark me brainliest if this helped you ! (by clicking the little crown on my answer) it helps a lot thnx! (*≧∀≦*)

The solution of the inequality 1 1/8 + b ≥ 7/16 will be;

⇒ - 11/16 ≤ b

What is Inequality?

A relation by which we can compare two or more mathematical expression is called an inequality.

Given that;

The inequality is,

⇒ 1 1/8 + b ≥ 7/16

Now,

Solve the inequality as;

The inequality is,

⇒ 1 1/8 + b ≥ 7/16

Solve for b as;

⇒ 9/8 + b ≥ 7/16

Subtract 9/8 as,

⇒ 9/8 + b - 9/8  ≥ 7/16 - 9/8

⇒ b ≥ (7 - 18) / 16

⇒ b ≥ - 11/16

⇒ - 11/16 ≤ b

Thus, The solution of the inequality 1 1/8 + b ≥ 7/16 will be;

⇒ - 11/16 ≤ b

Learn more about the inequality visit:

https://brainly.com/question/24372553

#SPJ2

If you went to school at 7:55 a.m. what time will it be in 4 hours?

Answers

11:55AM

8:55
9:55
10:55
11:55

Answer:  11:55 I hope this helps Have a nice day

Step-by-step explanation:

Which transformations map the strip patterns onto itself?

Answers

I think it’s b, a horizontal translation and a 180 degree rotation

Answer: D.

A horizontal translation and a glide reflection.

where does 3.5 belong o the venn diagram

Answers

Answer:

I think i would be c or a but im not sure

step-by-step explanation:

In the model for exponential growth or decay, the amount, or size, at t=0 is represented by __ the amount, or size, at time t is represented by __

Answers

1. A0 (small 0)
2.A0^ekt

In the model for exponential growth or decay, the amount, or size, at t=0 is represented by  [tex]N=N_{0}[/tex]. and at time t is represented by [tex]N=N_{0}e^{kt}[/tex]

Let us consider that [tex]N_{0}[/tex]  is the initial amount and N is represent that amount after growth or decay in time t .

Model for exponential growth or decay is,

                                 [tex]N=N_{0}e^{kt}[/tex]

Amount at t=0 is,

                             [tex]N=N_{0}e^{k*0}=N_{0}[/tex]

Learn more:

https://brainly.com/question/12626186

I dont know man help please

Answers

Answer:

m∠1 = 63°

m∠2 = 49°

m∠3 = 87°

m∠4 = 44°

Step-by-step explanation:

From the given figure

∵ ∠2 and 49° are vertically opposite angles

∵ The vertical opposite angles are equal in measures

m∠2 = 49°

∵ The sum of the interior angles of a Δ is 180°

∵ m∠1, m∠2, and 68° are interior angles of a Δ

∴ m∠1 + m∠2 + 68° = 180°

∵ m∠2 = 49°

∴ m∠1 + 49° + 68° = 180°

→ Add the like terms in the left side

m∠1 + 117 = 180

→ Subtract 180 from both sides

m∠1 = 63°

∵ ∠3 and 93° formed a pair of linear angles

∵ The sum of the measures of the linear angles is 180°

m∠3 + 93° = 180°

→ Subtract 93 from both sides

m∠3 = 87°

∵ 93° is an exterior angle of the triangle

∵ The measure of the exterior angle of a Δ at one vertex equals the sum

   of the measures of the opposite interior angles to this vertex

∵ ∠4 and 49° are the opposite interior angles to 93°

49° + m∠4 = 93°

→ Subtract 49 from both sides

m∠4 = 44°

Graph the greatest integer, f(x) = [x]

Answers

Answer:

Step-by-step explanation:

If 3x + 7 = 5 for some value of x, then what does the expression 6x +17 equal for the same value of x?

Answers

Answer:

13

Step-by-step explanation:

First, double the first equation.

If 3x+7=5, then 6x+14=10

Since they are asking for 6x+17, the answer is 10+3=13

Hope I helped!

13 hope this helps!!!!

Let V=ℝ2 and let H be the subset of V of all points on the line 4x+3y=12. Is H a subspace of the vector space V?

Answers

Answer:

No, it isn't.

Step-by-step explanation:

We have [tex]V=IR^{2}[/tex] and let [tex]H[/tex] be the subset of [tex]V[/tex] of all points on the line

[tex]4x+3y=12[/tex]

We need to find if [tex]H[/tex] is a subspace of the vector space [tex]V[/tex].

In [tex]IR^{2}[/tex] all the possibilities for own subspace of the vector space [tex]IR^{2}[/tex] are :

[tex]IR^{2}[/tex] itself.The vector [tex]0_{IR^{2}}=\left[\begin{array}{c}0&0\end{array}\right][/tex]All lines in [tex]IR^{2}[/tex] that passes through the origin  (  [tex]0_{IR^{2}}=\left[\begin{array}{c}0&0\end{array}\right][/tex]  )

We know that [tex]H[/tex] is the subset of [tex]IR^{2}[/tex] of all points on the line [tex]4x+3y=12[/tex]

If we look at the equation, the point [tex]\left[\begin{array}{c}0&0\end{array}\right][/tex] doesn't verify it because :

[tex]4x+3y=12\\4(0)+3(0)=12\\0=12[/tex]

Which is an absurd. Therefore, [tex]H[/tex] doesn't contain the origin (and [tex]H[/tex] is a line in [tex]IR^{2}[/tex]). Finally, it can't be a vector space of [tex]V=IR^{2}[/tex]

What is the chance of rolling two dice and the dice add up to six?

Answers

around 13% chance

Step-by-step explanation:

Help me with this please

Answers

Answer:

The First Table

Step-by-step explanation:

The y-values increase inconsistently, while the other tables are constant.

Joaana saves nickels and quarter in a jar

Answers

What are you tryna ask...

Answer:

The jar problem

Step-by-step explanation:

Joaana saves nickels and quarter in a jar

She looked to see if she had enough coins to fix her car

She didn't so she went on the side of the street to play her guitar

She played for money by a food bar

She worried she wouldn't make a lot

So she bet illegally on some chickens that fought

She was scared the cops would come and she would get caught

The saw the cops coming and her eyes lit up like a match

She grabbed $500 and she was one they wouldn't catch

It turns out she only needed $10 to fix a tiny scratch

She only had $5 is coins in her jar

Now she has $500 and can fix her car

Hope this helps ya! Keep smiling!

Other Questions
brainilist to first person to answer this question correctly write an equation that passes through points (-6,1) (4,3) If i were to sell this painting how much would i get and why? Just a little extra credit thing. It is a painting by the artist named Andres Orpinas. Match each excerpt from the passage with the tone it conveys. Please answer 7-9 i am using alot of my points for this (please answer) If f(x) = (x + 3) - 2, which of the following is the value of f(-3)? If a companys net income increased while its net sales remained constant, the company's profit margin would:_____a. Compare favorably to its competitors.b. Decrease.c. Increase.d. Not be impacted. the diagram shows a circle inside a square ABCDB AB = 20 cm. the radius of the circle is 9 cm. work out the area of the shaded region uwu can i have some ideas of what to draw for my art class can you upload some pictures to give me some ideas plz.the best one gets brainliest! 2+10= 12True or False??Just for points:) Find the measures of the exterior angles of the polygon. Which rational number equals 0.7 ? 1 10 Flo 11 a spring stretches to 18 cm with a 70 g weight attachment to the end. with a 100 g attached, it stretches to 24 cm . which equation models the distance y the spring stretches with weight x attached to it? If carbon dioxide was removed from a plant's environment, what would you expect tohappen to the plant's production of sugars?O fewer sugars will be producedmore sugars will be producedO carbon dioxide does not affect the production of sugars in plantso the same number of sugars will be produced but without the carbon dioxide What is the best English translation for exporta sunt? Please help Im so lost (`) Which of the following are good coping strategies for dealing with stress? Select all that apply.A. Do something physically active.B. Take a break.C. Talk through your feelings..D. Slam a door. If f(x) and g(x) are quadratic functions but (f + g)(x) produces the graph below, which statement must be true? 1.) Jeffjust bought a house on a triangular lot. Thesides measure 85 feet. 132 feet, and 157 feet. Is hislot a right triangle? An office uses an application to assign work to its staff members. The application uses a binary sequence to represent each of 100 staff members. What is the minimum number of bits needed to assign a unique bit sequence to each staff member?A 5B 6C 7D 8