The Aluminum Association reports that the average American uses 56.8 pounds of aluminum in a year. A random sample of 51 households is monitored for one year to determine aluminum usage. If the population standard deviation of annual usage is 12.3 pounds, what is the probability that the sample mean will be more than 59 pounds _________.
a) 0.1003
b) 0.3997
c) 0.6003
d) 0.8997
e) 0.0003

Answers

Answer 1

Answer:

A: 0.1003

Step-by-step explanation:

We are given;

Population mean; μ = 56.8

Population size; n = 51

Population standard deviation; σ = 12.3

We want to find; P(x > 59)

We will use the z-score formula.

z = (x - μ)/(σ/√n)

z = (59 - 56.8)/(12.3/√51)

z = 1.28

From z-distribution table attached, we have; P(z < 1.28) = 0.8997

Thus;

P(z > 1.28) = 1 - 0.8997 = 0.1003

The Aluminum Association Reports That The Average American Uses 56.8 Pounds Of Aluminum In A Year. A

Related Questions

still trying to find help solving. Today is the last day, can someone help?​

Answers

Answer:wow we have the same homework

Step-by-step explanation:

Hey I was unsure on 4&7 but I did my best. Anything of the style of slopes that said N/A I’ll be honest I didn’t know. I strongly recommend going to your teacher and asking for help if you need it. Also, little tip, the more points you offer for a question (especially one with an entire worksheet), the more likely you are to get answers. I hope I was at least some help :)

21 The average person at rest takes approximately 16 breaths per minute. Approxir many breaths do they take in 70 years of 365 days each? Use a calculator. Write in exponential notation using powers of 10.​

Answers

A person will take 5.88672 × [tex]10^{8}[/tex] breaths in 70 years.

Here, we are given that on average a person at rest takes approximately 16 breaths per minute.

1 hour = 60 minutes

Thus, in 1 hour a person will take-

60 × 16

= 960 breaths

Now, 1 day = 24 hours

Thus, in 1 day, a person will take-

24 × 960

= 23,040 breaths

Further, 1 year = 365 days

Thus, in 1 year, a person will take-

23,040 × 365

= 8,409,600 breaths

In 70 years, a person will take-

8,409,600 × 70

= 588,672,000 breaths

We can express this in exponential notation as-

5.88672 × [tex]10^{8}[/tex]

Thus, a person will take 5.88672 × [tex]10^{8}[/tex] breaths in 70 years.

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help plsssssssssssssssssssssssssssssss

Answers

Answer:

The answer is D

Elizabeth has 4 boxes of 100 toys and 3 toys that aren't in boxes. How many toys does she
have?

Answers

She has 403 right? It’s the only thing that makes sense

Answer:

Elizabeth has 403 toys.

Step-by-step explanation:

The main goal is to figure out how many toys Elizabeth has. So she has 4 boxes and each box has 100 toys. If she has 4 boxes of 100 it mean she have 400 toys but that's not the final answer. she also has 3 toys not in the boxes so we have to add that as well. So if we add 3 toys to the 400 toys we'd get a total of 403. Therefore Elizabeth has 403 toys and that would be our final answer.

I hope this helps, have a blessed day! :D

Mr. Arcos is opening a new restaurant. His restaurant has 8 tables with places for 4 people at each table. It also has 4 tables with places for 6 people at each table.

Today he is buying plates for the restaurant. The plates he is buying come in sets of 6 plates. How many sets of plates does he need to buy?

Answers

He needs to buy 10 packs, you have to round up to 10 because it’s around 9.3333

In the given case, we can conclude Mr. Arcos needs to buy 10 sets of plates for his restaurant.

To find out how many sets of plates Mr. Arcos needs to buy, we first need to determine the total number of people his restaurant can accommodate.

There are 8 tables with places for 4 people each, so these tables can seat a total of 8 x 4 = 32 people.
Additionally, there are 4 tables with places for 6 people each, which can seat a total of 4 x 6 = 24 people.

Therefore, the restaurant can accommodate a total of 32 + 24 = 56 people.

Since the plates come in sets of 6, we divide the total number of people (56) by the number of people served by each set (6) to find out how many sets of plates Mr. Arcos needs to buy: 56 / 6 = 9.33 sets. Since plates cannot be bought in fractions, he will need to round up to the nearest whole number. Therefore, he will need to buy at least 10 sets of plates for his restaurant.

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a number z is divided by four added to one in mathematical translate?​

Answers

[tex]\displaystyle\\Answer:\ \frac{z}{4} +1[/tex]

Which of the following statements models deductive reasoning?

I own a mean cat. My friend Lisa owns a mean cat. Therefore, all cats are mean.

People who follow a vegan diet do not eat steak. Mindy follows a vegan diet. Therefore, Mindy does not eat steak.

There has been a hurricane in Florida every August for the past two years. Therefore, there will be a hurricane in Florida in August this year.

Every test in Mr. Johnson’s class this year has been easy. Therefore the test in Mr. Johnson’s class today will be easy.

Answers

Answer:

B.

Step-by-step explanation:

Vegans by definition do not eat any products containing the meat of an animal. Therefore if Mindy truly follows a vegan diet, she would not eat steak.

Answer:People who follow a vegan diet do not eat steak. Mindy follows a vegan diet. Therefore, Mindy does not eat steak.

Step-by-step explanation:

Because deductive reasoning is when you make an inference about something. In option 2 they are making an inference that if Mindy does not eat steak she is a vegetarian. They have come to that conclusion by inferring she is a vegetarian because she does not eat steak.

Are the following inverses of each other?
f(x) = 5x - 3
g(x) = 2+3
O No, the composition resulted in f(g(x)) =
= x
O Yes, the composition resulted in f(g(x)) = x
O No, the composition resulted in f(g(x)) = 0
O Yes, the composition resulted in f(g(x)) = 0
and g(f(x)): =x
and g(f(x)) = x
and g(f(x)) = 0
and g(f(x)) = 0

Answers

Hi shhshwvsgxs sidhvxhdh surgdvcudu d dhdhdbd

Determine the equation for the given line in slope-intercept form.

y=-5/3x-1

y=5/3x+1

y=3/5x+1

y=-3/5x-1

Answers

Answer:

The last answer is correct

y = [tex]\frac{-3}{5 }[/tex] x - 1

Step-by-step explanation:

You can see that the graph crosses the y axis at (0,-1).  So, the graph crosses the y axis at -1.  Count how much you go down and the to right from the point on the left to the point on the right.  You go down 3 and left 5.  This is a negative slope of [tex]\frac{-3}{5}[/tex].

y = mx + b  Put in the slope for m  and the y-intercept by b

y = [tex]\frac{-3}{5}[/tex]x = 1

What is the slope of the tangent line for the function f(x)=2x^2-5x+1 at the point (1,-2)

A. -1
B.-9
C. 1
D. 0
E.9

Answers

This is given by the limit

[tex]\displaystyle \lim_{x\to1} \frac{f(x) - f(1)}{x - 1} = \lim_{x\to1} \frac{(2x^2 - 5x+1) - (-2)}{x - 1} = \lim_{x\to1} \frac{2x^2 - 5x + 3}{x - 1}[/tex]

Observe that [tex]2x^2-5x+3=0[/tex] when [tex]x=1[/tex], and factorizing gives

[tex]2x^2 - 5x + 3 = (x - 1) (2x - 3)[/tex]

so that

[tex]\displaystyle \lim_{x\to1} \frac{f(x) - f(1)}{x - 1} = \lim_{x\to1} (2x-3) = 2\cdot1 - 3 = \boxed{-1}[/tex]

(A)

5(g + 8) - 7 = 117 - g

Answers

Answer: g=14

Step-by-step explanation:

5(g + 8) - 7 = 117 - g

5g+40-7=117-g

5g+33=117-g

6g+33=117

6g=84

g=14

[tex]5(g + 8) - 7 = 117 - g[/tex]

[tex]5g + 5 \cdot 8 -7 = 117 -g\\[/tex]

[tex]5g + 40 -7 = 117 -g[/tex]

[tex]6g = 117 - 40 + 7[/tex]

[tex]6g = 84[/tex]

[tex]g = 94 : 6[/tex]

[tex]g = 14[/tex]

Which of the following is the graph of y = |x-3l?

Answers

Answer:

You only show one answer A. Lucky for you it's the correct one.

Step-by-step explanation:

branlyueer099799893
3 minutes ago
Mathematics
College
ANSWER RIGHT AWAY PLEASE!
question one: simply the exponents. (show your work)
- 21^0 = ?
- (2/3)^-2 = ?
question two: Solve the problem. (leave your answer as a base number with an exponent and show your work)
- 4^6 / 4^2 = ?
question three: Convert the number into numerical form. (show your work)
- 8.723 x 10^-10 = ?
question four: Solve the problem. (leave your answer in scientific notion and show your work)
- 5.1 x 10^8 - 2.3 x 10^3 = ?
- 6 x 10^5 x 1.1 x 10^7 = ?

PLEASE ANSWER I WILL GIVE 100 POINTS TO ANYONE WHO ANSWERS AND MARK BRAINLIEST AT LEAST ANSWER THE ONES YOU KNOW

Answers

The first one is 90000

28/48 simplified how do you simplify????????????????????

Answers

The answer is 7/12 on your simplification

Answer: 14/24 or 7/12

Step-by-step explanation: keep on dividing 2 or just divide by 4

Complete the equation.
(8 x 3) x 3 =
× (3 x 3)

Answers

Answer:

x=0

Step-by-step explanation:


In 2017, U.S. exports to Canada were $39.4 billion more than exports to Mexico. Together,
exports to these two countries totaled $525.4 billion. How much were exports to each
country.

Answers

The exports to each country are:

Exports to Mexico are $243 billion.Exports to Canada are $282.4

What are equations?The equation is described as the state of being equal and is often represented as a math expression with equal values on either side, or it refers to a problem in which many factors must be considered. 2+2 = 3+1 is an example of an equation.

So,

let the exports to Mexico be 'x'.

Exports to Canada will be x + 39.4.

Given:

U.S. exports to Canada were $39.4 billion more than exports to Mexico. Together,Exports to these two countries totaled $525.4 billion.

So, the equation becomes:

x + x + 39.4 = 525.42x + 39.4 = 525.42x = 525.4 - 39.42x = 486x = 243

So, exports to Mexico are 243 billion.

Exports to Canada are 243 + 39.4 = 282.4

Therefore, the exports to each country are:

Exports to Mexico are $243 billion.Exports to Canada are $282.4

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use the graph of the following function f(x) to find f(1)

Answers

From the graph of the function y = x - 1, it is found that f(1) = 0.

What is the missing information?

This problem is incomplete, but researching it on a search engine, it gives us the graph of the function y = x - 1.

How to find the numeric value of a function given a graph?

To find the numeric value of a function at x = a, we have to check the value of the horizontal axis when the vertical axis is of a.

For this problem, we want the numeric value at x = 1, hence, when the horizontal axis is of 1, the vertical axis is of 0, hence f(1) = 0.

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A 24 oz bottle of a new soda costs $3.33. What is the unit rate, rounded to the nearest tenth of a cent?

Answers

$0.13 is the Unit rate I figured it out by dividing $3.33 by 24…

The principal interest formula I = Prt can be used to find the interest earned on an initial amount of money, called the
principal, P, given an interest rate, r, and an amount of time over which interest is accrued, t. Solve I = Prt for P when
I = $5,480, r = .04 annual interest, and t 7 years. Round your answer to the nearest hundredth.

PLEASE HELP GUYS

Answers

Answer:

1885.714

Step-by-step explanation:

I = ptr

5280 = 7×0.4×p

p = 5280/2.8

p = 1885.7

solve for x 3x + 6y = 9

Answers

X = 1
Hope this helps!

Find the probability of a point chosen at random being in the shaded area of the diagram at the right

Answers

Answer:

1/2

Step-by-step explanation: because it is shaded or not

Im struggling on finding the arewa on this and how to give my answer as one decimal can somebody help me please

Answers

Answer:

5.8

Step-by-step explanation:

Area = (h x b)/2

A = (2.5 x 4.6)/2 = 5.75 = 5.8

Write the equation of the quadratic function given vertex V and
point P, which lies on the function. Write the equation in standard
form f(x) = ax2+bx+c.
V (1,-9)
P (0,-8)

Answers

The quadratic equation that passes through points (1, - 9) and (0, - 8) is y = x² - 2 · x - 8.

What is the quadratic equation that passes through two points?

Graphically speaking, quadratic equations are parabolas. The quadratic equation in vertex form is described by this formula:

y - k = C · (x - h)²

Where:

(h, k) - Vertex of the parabola.C - Vertex constant.

If we know that (x, y) = (0, - 8) and (h, k) = (1, - 9), then the vertex constant is:

- 8 + 9 = C · (0 - 1)²

1 = C · (- 1)²

1 = C

C = 1

Then, the quadratic equation in vertex form is:

y + 9 = (x - 1)²

Whose standard form is:

y + 9 = x² - 2 · x + 1

y = x² - 2 · x - 8

The quadratic equation that passes through points (1, - 9) and (0, - 8) is y = x² - 2 · x - 8.

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Question 3
What is the smallest solution to the equation 14-5x| = 1?
0.6
0-1.0
o 1.0
O 1.6

Answers

Answer:

0.06

Step-by-step explanation:

0x x it expand almost done ✅✅✅

The figure above is the aerial view of a parking lot
where the rectangles represent the entrances and
the circles represent the exits. What is the total 401
number of ways a driver can enter and exit this
parking lot?
A. 4
B. 7
C. 10
D. 12

Answers

Answer:

12

Step-by-step explanation:

There are 4 entrances and 3 exits, and thus 4(3)=12.

4²×3³×(-1)¹²² please solve this question tomorrow my exam of maths​

Answers

The value of 4²×3³×(-1)¹²² is 432.

How to find the value of 4²×3³×(-1)¹²²?

When a number is repeatedly multiplied by itself, the result is a power of that number.

A power of the original number would be produced if you multiplied a number by itself any number of times.

When a single number is added up several times, it is said to be multiplied.

given that 4²×3³×(-1)¹²²

now find the value of 4²×3³×(-1)¹²².

= 4 × 4

= 3 × 3 × 3

(-1)¹²² = 1

then, multiply these numbers.16 X 27 X 1 = 432

Hence, the value of 4²×3³×(-1)¹²² is 432.

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I've managed to find the area of the shape I just need help stating the units of my answer

Answers

It should be in centimetres squared (cm²)
Answer is cm2

They give you “cm” in the measurements
You are looking for cm2 or cm3?


The way I remember units (squared or cubed)
If it is two numbers multiplied it’s value is squared “X^2”
Two numbers is a two dimensional figure, it is flat <>
Example is 1/2 base x height is squared


If it is three numbers multiplied it is cubed
“X^3”
Three numbers is a three dimensional shape like a cube or

Example L x W x H is cubed


A certain plant grows 1 1/6 inches every week. How long will it take the plant to grow 6 1/6 inches?

Answers

It will take 6.14 weeks for the plant to grow the required length

The growth rate of the plant each week = 1 1/6 inches

Converting the mixed fraction into an improper fraction we multiply the whole number by the denominator and add the numerator to get the improper fraction, therefore

The growth rate of a plant in improper form = 7/6 inches

Required growth rate = 6 1/6 inches

The required growth rate in improper fraction = 43/6 inches

Number of weeks it will take the plant to grow the required length = Required length/Growth rate each week = (43/6)/(7/6)

= 43/7 weeks or 6.14 weeks

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Absolute value of -3 is

Answers

Answer:

Step-by-step explanation:

The absolute value of -3 is 3.

Answer: 3

Step-by-step explanation:

last question is How many people carried a tablet but not a cell
phone?

Answers

Answer:

No.1 is 89 No.2 is 11 No.3 is 60 and the last one is 29

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