In a recent survey of 655 working americans ages 25-34, the average weekly amount spent on lunch was $43.29 with standard deviation $2.75. The weekly amounts are approximately bell-shaped

Answers

Answer 1

Answer:

99.7%

Step-by-step explanation:

Given that:

sample size (n) = 655

sample mean ([tex]\overline x[/tex]) = 43.29

Standard deviation [tex]\sigma[/tex] = 2.75

Let's assume we are to estimate the percentage between $33.72 and $51.54

Then;

The test statistics at 33.72 is :

[tex]Z = \dfrac{X - \mu}{\sigma}[/tex]

[tex]Z = \dfrac{33.72 -43.29}{2.75}[/tex]

[tex]Z = -3.48[/tex]

Z at 51.54

[tex]Z = \dfrac{X - \mu}{\sigma}[/tex]

[tex]Z = \dfrac{51.54 -43.29}{2.75}[/tex]

[tex]Z = 3.00[/tex]

Using the empirical standard rule, the percentage will be 99.7%


Related Questions

HELP MEEEEE PLEASEEE

Answers

Answer:

i do not know but you need to answer you text messages

Step-by-step explanation:

3x-2y= 10
Write the slope intercept for of the equation

Answers

Answer: y = -3/2x + 5

Step-by-step explanation:

Answer:

y= 3/2x - 5

Step-by-step explanation:

Slope intercept form is y=mx + b

1. subtract 3x from both sides -2y= -3x + 10

2. divide -2 on each value y= 3/2x - 5

3. simplify if needed (already in simplest form)

What time does the clock show?
12
1
11
10
3 -
8
4.
1
7 6
5

Answers

Answer:

6:59

Step-by-step explanation:

Hour : Minute

Small hand is hour hand, large hand is minute hand. Minutes go by the small tic marks, where the hours go off of the numbers.

7:59 I could be wrong so I’m sorry! Have a great day.

Adele rides her bike 28 miles in 3.5 hours. How far has Adele traveled on her bike if she rides for 8 hours?

Answers

Answer:

64 miles

Step-by-step explanation:

if you divide 28 by 3.5, this gives you the number of miles per hour, I got 8. Multiply that by 8 because that is the number of hours we are looking for and you get 64. That is the answer.

18m = 36

Please help me with this for brainliest HURRYYYY

Answers

Answer: m=2

Step-by-step explanation: Hope this help :D

Let's solve your equation step-by-step.

18m=36

Step 1: Divide both sides by 18.

18m/18=36/18

m=2

What is the slope for (4, -4) and (-4, -4)
A. Undefined
B. 0
C. -8/8
D. 8/8

Answers

I am 100% sure it’s B.

convert 5.70 lbs to grams and explain please help

Answers

Answer:

2585.48.

Step-by-step explanation:

The formula to convert pounds to grams is to approximately multiply 5.70 by 454, which is equal to 2585.48.

What is the measure of arc HT?​

Answers

Answer:

step 1. mHT = 2(74) = 148°. the arc measures twice the angle when crossing the circle.

S
3 ft
Find the area of this figure.
Round your answer to the
nearest hundredth. Use
3.14 to approximate .
4 ft
5 ft
5 ft
A = [ ? ] ft2
Notice that only half of the circle is included in the figure!

Answers

9514 1404 393

Answer:

  26.13 ft²

Step-by-step explanation:

The total area is twice the area of the right triangles plus half the area of a circle of radius 3 ft.

  Semicircle area = (1/2)(πr²)

  semicircle area = (1/2)(3.14)(3 ft)² = 14.13 ft²

The area of the two right triangles is ...

  total triangular area = (3 ft)(4 ft) = 12 ft²

Then the area of the figure is ...

  figure area = semicircle area + total triangular area

  = 14.13 ft² + 12 ft² = 26.13 ft²

Answer: 26.13

Step-by-step explanation:

I dont really understand this question, can anyone help me out?

Answers

[tex]\mathfrak{\huge{\pink{\underline{\underline{AnSwEr:-}}}}}[/tex]

Actually Welcome to the Concept of the Angles.

Complementary angles sum up together to become 90°.

Supplementary Angles sum up together to become 180°.

hence,

1.) Ans ==>Angle ABC and Angle NMP

2.) Ans ==> angle ABC and angle EFG

Complementary angles add up to 90 degrees while supplementary angles will add up to 180 degrees.

1) ABC & NMP
2) EFG & RST

Factor completely

1/25-25z^2

Answers

Answer:

1/25(1-25z)(1+25z)

Step-by-step explanation:

your welcome : )

*URGENT* Would it be better to invest at 6% APR compounded annually or 6% APR compounded
continuously?

Answers

Step-by-step explanation:

step 1. compounded annually gives you interest once a year.

step 2. compounded continuously gives you interest every split second and then gives you interest on interest!

step 3. getting interest on your money continuously is better.

Frankie started cleaning her house at 1:30 p.M and finished cleaning at 6;30 p.M how long did Frankie clean

Answers

Answer:

5 hours

Step-by-step explanation:

Start time = 1:30 p.m

Finishing time = 6:30 p.m

Time taken :

Finishing time - start time

6:30 p.m - 1.30 p.m

= 5 hours

I need help with a/d​

Answers

what’s the question asking??

Answer:

yeah whats the question asking >:(

can someone please help me
y=5x+1

Answers

X= - 1/5

Y=5x+1
0=5x+1
-5x=1
-1/5

Answer:

X= [tex]\frac{1}{5\\}[/tex] y+ 1[tex]\frac{-1}{5}[/tex]

Step-by-step explanation:

y=5x+1

Step 1: Flip the equation.

5x + 1

Step 2: Add -1 to both sides.

5x + 1 + −1 = y+ −1

Step 3:

Divide both sides by 5.

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

How do you solve this equation for x?

-3(x+4) = x - 4

Answers

Step-by-step explanation:

(x+4)-x=-4+3

X+4-x = -1

x-x = - 1-4

-x = - 5

What is the solution to the equation below? √x+6 = x-6
A. x=12
B. x=3
C. x=4
D. x=10

Answers

Answer:

√x+6=x-6

squarring both side

x+6=x²-12x+36

0=x²-12x-x+36-6

x2-13x+30=0

x²-10x-3x+30=0

x(x-10)-3(x-10)=0

(x-10)(x-3)=0

either

x=10

or

x=3

Answer:

D:X=10

Explanation

10.
Describe the graph of the equation x = 7. Is the equation a function?


horizontal line; no

horizontal line; yes

vertical line; yes

vertical line; no

Answers

Answer:

The answer is Vertical Line; Yes

Step-by-step explanation:

The answer is Vertical Line; Yes. This is because all equations that are "X =" will always be vertical.  

x=7 represents the equation of a function which is a vertical line

Fill in the blank so that the ratios are equivalent. : 6 and 7:2​

Answers

Answer:

x = 21

Step-by-step explanation:

x : 6 = 7 : 2

x/6 = 7/2

x/6 = 21/6

x = 21

The net of a square pyramid is shown in the diagram.


What is the total surface area of the square pyramid in square inches?

Answers

Answer:

208

............

The total surface area of the square pyramid is 208 square inches.

What is Area?

Area is a collection of two - dimensional points enclosed by a single dimensional line. Mathematically, we can write -

V = ∫∫F(x, y) dx dy

Given is to find the total surface area of the square pyramid in square inches.

We can write the total surface area of the square pyramid as -

A{total} = A{square} + 4 x A{Δ}

A{total} = (8 x 8) + (4 x 1/2 x 8 x 9)

A{total} = 64 + (16 x 9)

A{total} = 208 square inches

Therefore, the total surface area of the square pyramid is 208 square inches.

To solve more questions on areas, visit the link-

https://brainly.com/question/29213222

#SPJ2

On Tuesday in Washington D.C. the temperature at 8am was -8 degrees. At 1pm, it was 27 degrees. By how many degrees did the temperature change from morning to evening?​

Answers

Answer:

35 degrees

Step-by-step explanation:

It’s 35 (-8 + 27) your welcome

9. Henry joined an art class that charges
$125 for the cost of supplies, plus $25
per class. Henry wants to spend no more
than $500 on art classes. Which
inequality can be solved to find the
number of classes Henry can take?
A 25x + 125 < 500
B 125x - 25 > 500
C 25x 2 625
D 125x + 25 S 500

Answers

Answer:

Step-by-step explanation:

[tex]25x+125\le 500[/tex]

Em cada caixote cabem 30 dúzias de laranjas. Um caminhão está carregado com 80 caixotes de laranjas. Quantas

laranjas, no total o caminhão está carregando?​

Answers

Responda:

2400 dúzia

28800 laranjas

Explicação passo a passo:

se cada caixa pode conter 30 dúzias de laranjas e há 80 caixas, então para descobrir quantas dúzias há 30x80=2400

mas isso é quantas dezenas existem. Uma dúzia = 12 laranjas para descobrir quantas laranjas multiplicam as dúzia por 12 2400x12 = 28800 laranjas totais

If micheal invests $2000 in the bank at a rate of 5.5% for 6 years how much interest will he make?


help me plz

Answers

Answer:  14,533.79 don´t take my word for it

Step-by-step explanation:

Future Value of Annuity Due

P = 2,000

r = 5.5% (0.055)

n = 6

1.055 * (2,000 * [(1 + 0.055)^6 - 1)/(0.055)])

= 14,533.79

answer my question PLEASE

Answers

Answer:

130

Step-by-step explanation:

Help please
3 |X-4| +1 = 19

Answers

The answer would be X = 10

HELP THIS IS DUE TODAY.

Answers

Answer:

You can try for the first pic x = 2 and 6 and you can try the second pic x = 0 and 3 (The ones that I put missing). If you need any help in them, I will help you out but try half of them by yourself. Hopw this helps, thank you :) !!

Look at the third picture. Maybe that would help you.

What is the slope of the line that passes through the points (−6,−4) and (-12, -4) ?

Answers

Answer:

0

Step-by-step explanation:

The formula for slope is [ y2-y1/x2-x1 ].

-4-(-4)/-12-(-6)

0/-6

Since the numerator is 0, the slope is 0.

Best of Luck!

Jonathan had $40 in his bank account. He withdrew $12 and deposited $4. How much is in his bank account now?

Answers

Answer:

he 32 is what he got in bank now an hope this help.

Step-by-step explanation:

A deli sells small, medium, and large sack lunches. Each bottle of water costs $1, and each apple costs $1. Each sandwich costs s dollars. Some customers buy sack lunches, and some customers buy items separately.
Amy buys 8 sandwiches and 12 waters.her total cost is 8s+12 how much did she pay.

Answers

Answer:

unknown

Step-by-step explanation:

it doesn't tell you anything about the total cost of amy, you can't go backwards and reverse the equation

8+12=$20

Step-by-step explanation:

just add them up since they all cost $1

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