Kiera is contacting the poll workers from the last election to see whether they are willing to work in the next election. During the last election, 42\%42%42, percent of the poll workers were under 606060 years old. Let WWW be the number of poll workers Kiera contacts before reaching one that is 606060 years old or older. Assume that each poll worker's age is independent. Find the mean and standard deviation of WWW. Round your answers to one decimal place.

Answers

Answer 1

Answer:

Mean: 1.7 and standard deviation 1.1.

Step-by-step explanation:

42% Of the poll workers are less than 60 years old. In other words, 58% of the poll workers are 60 years old: 1-0.42 = 0.58. So W is a geometric variable where the first "success" is poll worker who is at least 60years old.

Mean: 1/0.58 = 1.7241 poll workers, about 1.7 poll workers.

Standard deviation: sqr(1-p)/p = sqr(1-0.58)/0.58 = 1.1174 poll workers, about 1.1 poll workers.

Answer 2

The required Mean and the standard deviation are given as 1.7  and 1.1 respectively.

Given that,
During the last election, 42%, percent of the poll workers were under 60 years old. Let W be the number of poll workers Kiera contacts before reaching one that is 606060 years old or older.

What is mean?

The mean of the values is the ratio of the total sum of values to the number of values.

here,
42% of poll workers are under the age of 60. Also, 58% of poll workers are above the age of 60.
= 1 - 0.42 = 0.58.


So "W" is a geometric variable with the first success being a poll worker beyond the age of 60.

Mean =  1/0.58
         = 1.7 poll workers.

Standard deviation = √[(1-0.58)/0.58]
                             = 1.1 poll workers.

Thus, the required Mean and the standard deviation are given as 1.7  and 1.1 respectively.

Learn more about mean here:

https://brainly.com/question/15397049

#SPJ2


Related Questions

please help , giving brainliest, ONLY NUMBER 2

Answers

Answer:

-10

Step-by-step explanation:

HELP ME FIND THE SLOPE PLS

Answers

Answer:

6

Step-by-step explanation:

Find 2 points that are connecting integers

y2-y1/x2-x1(use this to find slope)

(3,3)(2,-3)

-3-3/2-3

-3-3=-6

2-3=-1

-6/-1=6

Therefore, slope is 6

y + 4 + 2x + 3y

can someone simplify it

Answers

Answer:

2x+4y+4

Step-by-step explanation:

Answer:

y×(1+3)+2×(2+x)

Step-by-step explanation:

y(1+3)+2x+4

2(x+2)

What value of x makes the equation true?

6x+8=3x-19

A. x = 3
B. x = -3
C. x = -9
D. x = -11/3

Correct answer will get brainiest!

Answers

Answer:

C

Step-by-step explanation:

Given

6x + 8 = 3x - 19 ( subtract 3x from both sides )

3x + 8 = - 19 ( subtract 8 from both sides )

3x = - 27 ( divide both sides by 3 )

x = - 9 → C

Will give 20 points if you answer correctly, will give brainliest! Please answer and EXPLAIN! Thanks

write the slope intercept form of an equation of the line that passes through the given point and is parallel to the graph of the equation (-3,5), y=-5x+3

a. y= 10x-5
b. y=-5x-10
c. y=-5x+10
d. y+1/5x-5

Please help! Thx!

Answers

Answer: B

Step-by-step explanation:

so for the slope to be parallel, it means it's the same slope as the given equation which is -5

using point slope, we can write a new equation

y -5 = -5(x+3)

y -5 = -5x-15

y = -5x-10

Determine the equation of the line given by the graph.
A) y = 3x + 2
B y = 3x - 2
C y-1/3x+2
D y=1/3x-2

Answers

B, y=3x-2. It’s a positive line, so it can’t be C. The line intersects the y axis at -2 so we know it’s either B or D. If you count the points the line runs through, you can see it rises 3 points and only runs 1. That means the slope is 3/1 which equals 3. B’s slope is 3, so you have your answer!

Leo took an Uber to get to football practice. Uber charged $1.25 per mile (m) and he gave the driver a $5.00 tip. If the total trip was $16.25, how many miles did he travel to football practice?

Answers

Answer:

9miles

Step-by-step explanation:

Step one:

given data

we are told that the uber charges $1.25 per mile

and that Leo also gave a tip of $5

the function for the total charge is given as

y=mx+c

Step two:

we will use the notation m for the number of miles traveled

given that the total trip is $16.25

16.25=1.25m+5

solving for m we have

16.25-5=1.25m

11.25=1.25m

divide both sides by 1.25

m=11.25/1.25

m=9

So he travelled 9miles

WILL MARK BRAINIEST!!!
(AMC8, 2008) In square ABCE, __ = 2FE and CD = 2DE. What is the ratio of the area △BDF to the area of square ABCE?

Answers

Answer:

5/18

Step-by-step explanation:

(36-12-12-2)/36=5/18

the price of a televison 245 . the sales tax is 8%. what is the amount of sales tax?

Answers

Answer:

the sale tax is 19.60

Step-by-step explanation:

245*0.08=19.60

Answer:

19.6

Step-by-step explanation:

8 percent *245 =

(8:100)*245 =

(8*245):100 =

1960:100 = 19.6

Joseph has 48 comic books. He sold one-fourth of his collection to his friend. He brought twice the number of comic books as he has now.how many comic books does he have now?

Answers

Answer:

108

Step-by-step explanation:

Given that Joseph has 48 comic books.

As he sold 1/4 of his collection to his friend, so

The number of books, Josef sold = 1/4 x 48 = 12.

The number of remaining books, Josef has = 48 - 12 = 36.

As he brought twice the number of comic books as he has now, so,

the number of comic books, Josef brought = 2 x 36 = 72.

Now, total number of comic books, Josef has = 36 + 72 = 108.

What is the equation of a line that passes through the point (−2, 5) and has a slope of zero

Answers

Answer:

y= -2/5x

Step-by-step explanation:

Plz answer this math problem
Solve problems a,b,c,d,e,and f. With the graph

Answers

Answers:

a. f(-4)=2

b. f(0)=0

d. f(-5)=0

e. x when f(x)=-2  answer: 2

f. x when f(x)=0  answer: 0

Sorry, I can’t answer c. f(3)=  because when x is three from the x-axis on the graph, the line that meets 3 from the x-axis doesn’t show a whole number     y-coordinate on the graph :(

But I hope this helps and answers your question :)

Use the diagram to complete each statement. Twelve lines are drawn to form a cube as shown. Plane AFH is parallel to plane ?

Answers

Answer:

BGC

Step-by-step explanation:

im pretty aure aorry if u get it wrong man

Convert 120 L/hr to L/min

Answers

Answer:

2

Step-by-step explanation:

Pls let me know in 5 min or I’m dead

Answers

Answer:

( 0 , 4 )

Step-by-step explanation:

Your estimate is correct

Answer:

(-1, 6)

Step-by-step explanation:

sub the points into the equation if LHS and RHS are equal to each other, it is correct

What is 70% of 900
Pls answer quickly

Answers

Answer:

630

Step-by-step explanation:

10% of 900 is 90 (900÷10)

20% of 900 is 180 (90×2)     -     basically the 10% times 2

50% of 900 is 450 (900÷2)

450+180=630         -          the sum of the 20% and 50%

Dr. Ochoa's team attached a beam to the International Space Station creating a right angle. If the height of the International Space Station is 110 kilometers and the length of the attached beam is 75 kilometers, how far is the end of the beam from top of the International Space Station? Round your answer to nearest tenth of a kilometer.

Answers

133.1 kilometers

Step-by-step explanation:

find the area of the circle round your answer to the nearest hundred ​

Answers

Answer:

what are the numbers shown?

To find the area of a circle you do pi times radius squared

Find the product.
-8x5y2 · 6x2y

-8x10y2

-8x7y3

-48x7y3

-48x10y2

Answers

Answer:

C.

-48x7y3

Step-by-step explanation:

The next answer on edge is also C. 9a8 + 24a4 + 16

The multiplication of -8x⁵y² and 6x²y will be -48x⁷y³ so option (C) will be correct.

What is multiplication?

Multiplication gives us a resultant number that will be very big as compared to the number which is going to be multiplied if and only if the number which is going to be multiplied is more than one.

Given the two terms,

-8x⁵y² and 6x²y

If we multiply

-8x⁵y² ×  6x²y = (-8)×6 × x⁵y² × x²y

⇒ - 48 × x⁵x² y²y¹

⇒ - 48 × x⁵⁺²y²⁺¹

⇒ - 48x⁷y³

Hence "The multiplication of -8x⁵y² and 6x²y will be -48x⁷y³".

For more information about multiplication,

brainly.com/question/14059007

#SPJ2

When simplified, which of the following expressions has a coefficient of 5?

-4x - 9x
-4x + 9x
4x - 9x
4x - (-9x)

please help

Answers

Answer:

It would be -4x +9x

Step-by-step explanation:

-4 +9 is 5 so they combine since they are like terms. Therefore the coefficient would be 5.

4×(x+1)−5=11 NEED HELPPPP

Answers

X=4 this is because 4 times (x+1)-5=11 the 1x then just turns to x because you can’t have a 1 next to x when it’s just one x.
4*(x+1)-5=11
4(x)-5=11
4x-5=11
+5=11
—————
4x=16
4. 4
———-
X=4

Guillermo bought 5 bags of candy that cost $10 each. Each bag of candy came with 35 pieces of candy inside. How many total pieces of candy did Guillermo purchase?

Answers

Answer:

175

Step-by-step explanation:

multiply the number of pieces by the number of bags he  bought

Answer:

175

Step-by-step explanation:

5x35=175

help me :<<<<<<<<<<<<_​

Answers

Exact form : 45/4
Decimal form : 11.25
mixed number form : 11 1/4

Quadrilateral ABCD is reflected over line segment y as shown, resulting in quadrilateral TURS.

Quadrilateral A B C D is reflected over line y to form quadrilateral T U R S.

If AD 5 in., AB = 7 in., DC = 4 in., and BC = 9 in., what is TU?

4 in.
5 in.
7 in.
9 in.

Answers

Answer:

7in

Step-by-step explanation:

Triangle DEF is reflected over the y-axis, and then translated down 4 units and right 3 units.

(I searched it up)

The length of TU is 7 in.

Hence, option C is correct.

What is quadrilateral?

A quadrilateral is a shape with four sides, four vertices, and four angles that is only two dimensional. Convex and concave are the two main forms. Convex quadrilaterals can also be divided into a number of subgroups, including trapezoids, parallelograms, rectangles, rhombus, and squares.

Given that,

Quadrilateral ABCD is reflected over a line y

Hence preimage = ABCD and image = TURS

After reflection,

The new position of A = T

New position of B =U

New position of C = R and

New position of D = S

By transformation properties,

For reflection the scale factor is 1 and hence AB will have the same length as TU

Since,

AB = 7 inches,

Therefore,

TU = 7 inches.

To learn more about quadrilaterals visit:

https://brainly.com/question/11037270

#SPJ7

1. (9х3 + 5x)
- 7x - 3x)
Help me solve this and give me the answer.

Answers

Answer:

2x³ + 8x

General Formulas and Concepts:

Pre-Alg

Distributive Property

Alg I

Combining like terms

Step-by-step explanation:

Step 1: Define

(9x³ + 5x) - (7x³ - 3x)

Step 2: Solve

Distribute negative:               9x³ + 5x - 7x³ + 3xCombine like terms:               2x³ + 8x

Estimate 8 x 342 hehehhe

Answers

Answer:

2736

Step-by-step explanation:

8

×  3 4 2

1

1 6

3  

3 2 0

2  

2 4 0 0

2 7 3 6

Answer:

whqt the oth3r pers0n s4id

Step-by-step explanation:

vfrtgebcydhnnnnkmkmznjjjdcbhjfjmcmdx

WHAT IS 817373763647837466367828390487273839288738939393872803928 Factorial

I WILL GIVE BRANLIST.

Answers

Answer: No one will ever know that

Step-by-step explanation:

Seriously even Google doesn’t know it

Select the correct answer.
What is the solution to this equation?
4(^3 sqrt x – 2) + 1 = 9
A. 10
B. 6
C. 0
D. 8

Answers

Answer:

I got B too so I sure could be right answer but if it's not then I so sorry. B. 6

The solution of the given equation [tex](4)^{3\sqrt{x} -2}[/tex] + 1 = 9 will be x = 1.08.

What is a equation?

An equation is a mathematical statement with an 'equal to' symbol between two expressions that have equal values.

Given is the following equation -

[tex](4)^{3\sqrt{x} -2}[/tex] + 1 = 9

The given equation is -

[tex](4)^{3\sqrt{x} -2}[/tex] + 1 = 9

[tex](4)^{3\sqrt{x} -2}[/tex]  = 8

Assume 3[tex]\sqrt{x}[/tex] = n. Then, we can write the equation as -

(4)ⁿ ⁻ ² = 8

(4)ⁿ ÷ (4)² = 8

(4)ⁿ x 1/(4)² = 8

(4)ⁿ = 8 x 16

(2)²ⁿ = (2)³ x (2)⁴

2n = 3 + 4

2n = 7

n = 7/2

3[tex]\sqrt{x}[/tex] = 7/2

[tex]\sqrt{x}[/tex] = 7/6

x = 1.08

Therefore, the solution of the given equation [tex](4)^{3\sqrt{x} -2}[/tex] + 1 = 9 will be

x = 1.08.

To solve more questions on solving equations, visit the link below-

https://brainly.com/question/12113848

#SPJ2

Find the slope between the two points

Answers

Answer:

B. -2/7

Step-by-step explanation:

Rise over run. The graph also goes down so it is negative.

Use the diagram to find the measure of angle KHL.

Answers

Answer:

m∠KHL = 43°

Step-by-step explanation:

From the picture attached,

m∠KHL ≅ m∠GHL [Given in the picture]

Now substituting the values of the angles,

(3x + 1) = (5x - 27)

1 + 27 = 5x - 3x

28 = 2x

14 = x

m∠KHL = (3x + 1)° = (3 × 14) + 1

                             = 42 + 1

                             = 43°

Therefore, measure of ∠KHL = 43°

Other Questions
Asia is a chef in a restaurant. To prepare for dinner service, she chops 7 1/2 onions in 1/6 of an hour. What is Asia's rate of chopping in onions per hour? ( help!!! GIVING BRAINLIEST) Which statement best explain how the following supporting detail could help develop the central idea of a text Graph the equation y=-x^2-4x+5y, on the accompanying set of axes. You must plot 5 points including the roots and the vertex. Using the graph, determine the roots of the equation -x^2-4x+5=0. What religion was practiced by the Byzantine Empire?1 poirCatholicismEastern OrthodoxyIslamBuddhism Answer the following correct 5=305=3005=3,0005=30,0005=300,0005=3,000,0005=30,000,000 Find the area of the trapezoid. gases involved in photosynthesis of a plant and their roles Use the weather map to answer the question.Weather map with blue line with triangles pointing down and to the right. Red line with semi-circles pointing up and to the right. Red line is to the right of the blue line. Dorling Kindersley / Universal Images Group / Image Quest 2016What does the red line indicate? A cold front is moving to the north and east. A cold front is moving to the south and west. A warm front is moving to the north and east. A warm front is moving to the south and west. [PICTURE ATTACHED] sigh, another variability one. if u get it correct, ill make you brainliest! :) Paul Reveres Ride is written by _____. Abraham Lincoln Henry Wordsworth Longfellow Louisa May Alcott Walt Whitman Name any two operating systems you know. Question about magazine covers and gender roles:I have to write a paper and need some ideas please.Look at a cover of a man's magazine. Examine how the cover model is presented in a man's magazine. Look at their clothing, pose, facial expressions, gestures, how they are styled, or other attributes in their presentation. How are these attributes related to ideas about gender roles for a man. 3x = 0.5.x2o oO x= -6 or x = 0Ox= -4 or x = 3ox = -2 or x = 1.5x = 0 or x = 6 Dion is laying brick down to make a patio. He plans for the patio to be 8.75 feet by 14.8 feet. He orders enough brick for 135 square feet. Which statement about the amount of brick is correct? Why did Spain want to take over Saint Domingue? 1. Why did so many people move to Manchester in the 1700s?2. What innovation made it possible to have factories in Manchester? PLS HELP! I WILL MARK FIRST GOOD ANSWER BRAINLIEST!!!!!ubkhhjkbjhIf you could live in any decade, which one would you choose and why? (1 paragraph) pls 1 paragraphWhat type of text structure is this? A duck is cooked in the kitchen oven for 4 hours. Knowing that the oven, powered by 220 V, absorbs a current of 20 A and uses energy costing 0.048 / kWh, how much does it cost to cook the duck? What is a disease that involves the breakdown of air sacs in the lungs?