A random sample of five Galaxy 8 smartphones is selected from the production line after final assembly, and the result of the weight control measurement is (in grams) 155.1, 154.8, 155.5, 155.3, and 154.6.What are the average weight, its uncertainty (i.e. the standard deviation of the mean), and the fractional uncertainty

Answers

Answer 1

Answer:

a. Mean = 155.1 grams

b. Standard deviation = 0.37

c. Fractional uncertainty = 0.074

Step-by-step explanation:

a. Average weight

This is same as the mean weight;

Mathematically, that would be; sum of the weights/ the number of weights

= (155.1 + 154.8 + 155.5 + 155.3 + 154.6)/5 = 775.3/5 = 155.06 which is approximately 155.1

b. Standard deviation

Mathematically; we calculate that using the formula;

√{(x-mean)^2/(N-1)}

Please check attachment for for the complete breakdown of this

c. Fractional uncertainty

= Standard deviation/number of measurements = 0.37/5 = 0.074

A Random Sample Of Five Galaxy 8 Smartphones Is Selected From The Production Line After Final Assembly,

Related Questions

how do we use inverse functions in everyday life

Answers

we basically use inverse functions in our daily lives all the time

to give you a more complicated example : knowing the interest rate, you have a function to calculate the cumulative value of an installment payment

functions are also used in computing

In 1988, a certain model of car cost $17000. What would be the cost of that car in 2017 dollars?

Answers

Answer:

$66,092.50

Step-by-step explanation:

In 1988, the car cost $17,000

Annual inflation over this period was 3.54% from 1988 to 2017

After adjusted for inflation, $17,000.00 in 1978 is equal to $66,092.50 in 2017

Therefore, the cost of that car in 2017 is closest to $66,092.50

A golfer earned the following scores over several rounds of golf: −3, 2, 0, −1, 2, −4. Jamar says these numbers can all be described as integers, while Sophia says they are whole numbers. Which student is correct? Explain how you know.

Answers

Answer:

Jamar is correct.

Step-by-step explanation:

The scores are as follows :

−3, 2, 0, −1, 2, −4.

These numbers include negative, positive and 0 as well. These numbers cannot written in a fractional form. It means they are integers.

Here, amar says these numbers can all be described as integers, while Sophia says they are whole numbers.

It would mean that Amar is correct. Sophia is incorrect because she told that the are whole numbers. Whole numbers are simply number like 0,1,2,3,4....

Change 84 inches to feet

Answers

Is 7 I’m pretty sure

f(x)=3x 2 +16 Find f(-1)

Answers

Answer:

X-18/3

Step-by-step explanation:

Assuming you meant 3x+18

The inverse f(-1) of the equation is above.

How many 1s are in 20?​

Answers

the answer is 20 1's in 20
20? Like if your asking how many 1s go into 20 it’s 20 because 20 divided by 1

Ace's brother is 9 years older than three times his age. the sum of their ages is 57 .how old is Chris?

show me your equation and answer​

Answers

Answer:

3x+9=57; Chris is 16 years old

Step-by-step explanation:

3x+9=57

Move the Constant to the right

3x=57-9

Calculate

3×=48

Divide both sides

x= 16

The water level in a pool drops 8 iches in a day so what is the average level drop in each hour

Answers

it would be 0, hope this helps :)

V=1/3(pie)r(squared)h Need to isolate h.

Answers

Answer:

[tex]\frac{v}{\frac{1}{3}\pi^{2}}=h[/tex]

Step-by-step explanation:

Divide V by everything you don't need on the right side.

So, You should end up with

[tex]\frac{v}{\frac{1}{3}\pi^{2}}=h\\[/tex]

The final velocity of an object moving in one dimension is given by the formula v=u+at, where u is the initial velocity, a is the acceleration, and t is the time. Solve the equation to t. To solve for t, first __ both sides of the equation.

Answers

Answer:

subtract u from

Step-by-step explanation:

the second answer is D. t=(v-u)/a

just did it on edge

Answer:

"subtract u from"

Step-by-step explanation:

correct on edge 2022 :)

line g has a slope of 9/5. line h is perpendicular to g. what is the slop of line h?

Answers

Answer:

-5/9

Step-by-step explanation:

Note. If the line is parallel, then the slope is shared. If the line is perpendicular (directly opposite), it means to flip the sign as well as the fraction.

The slope of line g is 9/5. This means that the slope of line h, (which is perpendicular to line g), would be the opposite, or -5/9

-5/9 is your answer.

~

15 out of 60 is what percentage

Answers

25% since 15/60= 1/4= 0.25= 25%

Solve the equation and find the value of x. 10(x + 3) - (-9x - 4) = x - 5+ 3
Your answer

Answers

Answer:

10(x + 3) - (-9x - 4) = x - 5+ 3

10x+30+9x+4=x-2

19x+34=x-2

19x-x= -2-34

18x=-36

x= -2

A virus strain is 0.00000015 meters in length. What is the length in scientific notation?

Answers

Answer:

1.5*10^-5

Step-by-step explanation:

Hey there! I'm happy to help!

Scientific notation is writing a number 1-10 multiplied by ten to a certain power. We see that we can write the number 1.5 to fit this.

We want to multiply by ten to a negative power as the decimal has been moved to the left. Let's count how many times we need to move the decimal over to get to 1.5.

If we count this, we have to move 7 places to get the decimal in the right spot. Therefore, to write this in scientific notation, we would write 1.5×10^-7.

Have a wonderful day! :D

i need help i’m stuck on this one

Answers

Answer:

i would say the 2nd or 3rd on bc that is kinda confusing

I need help with this question

Answers

The answer is 17 when you substitute u=-2
The answer is 9, using bodmas

Consider the universal set U and the sets X, Y, Z. U={1,2,3,4,5,6} X={1,4,5} Y={1,2} Z={2,3,5} What is (Z⋃X′)⋂Y?

Answers

X' = U - X

= {1,2,3,4,5,6} - {1,4,5}

= {2,3,6}

(ZUX') = {2,3,5} U {2,3,6}

= {2,3,5,6}

(Z⋃X′)⋂Y = {2,3,5,6} ⋂ {1,2}

= {2}

In order to isolate the variable term in the equation 6 – 2x = –3 using the subtraction property of equality, which number should be subtracted from both sides of the equation?
–3
–2
3
6

Answers

negative 3


hope this helps

PLZ HELP FAST
short sentences plz​

Answers

Answer:

Step-by-step explanation:

The women used a crib and used force to push the baby's crib

That guy was speeding

The bikes accelerated as he pedaled

The guy needed velocity to turn his bike

You need to exert to push a door

Space has no gravity

Newton's first law was a great moment

That object has interia

SORRY THAT'S THE BEST I CAN DO...

Each school bus can hold 65 students. If there are 8 buses, how many students can ride the bus?

Answers

Answer:

520

Step-by-step explanation:

the difference between -89.2 and 56.7

Answers

Answer:

Step-by-step explanation:

-32.5

-33.5

To find the difference you need to subtract, so it would look like this

-89.2-56.7 which equals -33.5

mZSRW =


need a fast answer thanks!

Answers

Answer:

The answer is 95 degrees.

Step-by-step explanation: rtw and srw are vertical angles and therefore have the same angle measure

PLs give brainliest if someone else answers!

The measurement of the angle ∠ SRW in the given figure is 95°

What are angles?

An angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle.

Angles formed by two rays lie in the plane that contains the rays.

Angles are also formed by the intersection of two planes.

Given is a figure, lines VS and TW are intersecting at the point R, making angles, TRV, TRS, VRW and SRW,

We need to find the measurement of the angle SRW,

Here, we can see that the angles TRV and SRW, are vertically opposite angles,

Vertically opposite angles :-

Vertically opposite angles are angles that are opposite one another at a specific vertex and are created by two straight intersecting lines. Vertically opposite angles are equal to each other.

Therefore, we can say that, ∠ TRV = ∠ SRW

Since, ∠ TRV = 95°

Therefore, ∠ SRW = 95°

Hence, the measurement of the angle ∠ SRW in the given figure is 95°

Learn more about angles, click;

https://brainly.com/question/30147425

#SPJ7

a rectangular with a perimeter of 32 cm has a base of x-3 cm and a height of 2x+7 cm what are the length in cm of the rectangle base an height​

Answers

Answer:

Step-by-step explanation:

Perimeter = 32

length = x - 3

width = 2x + 7

Perimeter = 2* Length + 2* width

Perimeter = 2*(x-3) + 2(2x + 7) = 32         Remove the brackets.

2x - 6 + 4x + 14 = 32                                  Combine

6x + 8 = 32                                                 Subtract 1 from both sides

6x = 32 - 8

6x = 24                                                       Divide by 6

x = 24/6

x = 4

So the base = x - 3 = 4 - 3 = 1

The height  = 2*4 + 7 = 8 + 7 = 15

To one decimal place, 93 must lie between
and

Answers

Answer:

9.3

Step-by-step explanation:

To move one decimal you move one digit left.

In a population of elderly war veterans, the probability that a veteran will have been exposed to agent orange (a militarized herbicide) and develop cancer is 0.35. The probability is 0.75 that a veteran exposed to agent orange will develop cancer. The average age of the veterans is 67 years old. What is the probability that a random veteran will have been exposed to agent orange

Answers

Answer:

Probability that a random veteran will have been exposed to agent orange is 0.4667

Step-by-step explanation:

P(exposed to agent cancer and develop cancer) = 0.35

P(develop cancer given he is already exposed to agent orange) = 0.75

P(is exposed to agent cancer) = ?

 

P(A given B) = P(A and B)/P(B),

P(develop cancer | exposed to agent orange)  = P(develop cancer and exposed to agent orange)/P(exposed to agent orange)  

0.75 = 0.35/P(exposed to agent orange)  

P(exposed to agent orange) = 0.35/0.75

P(exposed to agent orange) = 0.4667

800 out of 1/10 is what?

Answers

The answer is 80.

Please mark brainliest

can someone please help me out with this?

Answers

Answer:

B. segment AG is congruent to segment OL

Step-by-step explanation:

Please Show Work 6x(-4) Six times negative four.

Answers

Answer:

6 x (-4)

= (-24)

Step-by-step explanation:

when multiplying integers, you first need to multiply the numbers. Then you need to look at the signs if both numbers have the same signs or if it doesn't. if the signs are the same, the product is a positive . If the two numbers have different signs, you will get a negative product.

NOTE: if a number doesn't have a sign, it's a positive number

sun^4A+sin^2Acos^2A=sin^2A​

Answers

Step-by-step explanation:

sin⁴A + sin²Acos²A = sin²A

Proving the left hand side ( LHS)

That's

sin⁴A can be written as ( sin²A)(sin ²A)

So we have

( sin²A)(sin ²A) + sin²Acos²A

Next factor sin²A out

That's

sin²A ( sin²A + cos²A)

Using trigonometric identities

That's

sin²A + cos²A = 1

Simplify the expression

That's

sin²A × 1

We have the final answer as

sin²A

As proven

Hope this helps you

Find the distance between the points E(3, 7) and F(6, 5).
The exact distance between the two points is

Answers

Answer:

The answer is

[tex]\sqrt{13} \: \: \: \: units[/tex]

Step-by-step explanation:

The distance between two points can be found by using the formula

[tex]d = \sqrt{ ({x1 - x2})^{2} + ({y1 - y2})^{2} } \\ [/tex]

where

(x1 , y1) and (x2 , y2) are the points

From the question the points are

E(3, 7) and F(6, 5)

The distance between them is

[tex] |EF| = \sqrt{( {3 - 6})^{2} + ({7 - 5})^{2} } \\ = \sqrt{ ({ - 3})^{2} + {2}^{2} } \\ = \sqrt{9 + 4} \\ = \sqrt{13} \: \: \: \: \: [/tex]

We have the final answer as

[tex] \sqrt{13} \: \: \: \: units[/tex]

Hope this helps you

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