Suppose you had a telephone directory listing all the businesses in a city, alphabetized by type of business. If you wanted to phone 100 of them to get a representative sampling of opinion on some issue, how would you select which 100 to phone? Why would it not be a good idea to simply use the first 100 businesses listed

Answers

Answer 1

Answer:

Step-by-step explanation:

The best way to select the 100 phone calls would be to randomly select the same amount of phone numbers from each individual type of business. This would make sure that there are no bias choices and would be 100% representative of the overall business market in every single type of business. If you choose the first 100 phone numbers you are choosing from only a handful of the same types of business and leaving out a lot of other types of business. This makes it impossible for the information gathered to be representative of the entire market.

Answer 2

Answer:

best way to select the 100 phone calls would be to randomly select the same amount of phone numbers from each individual type of business. This would make sure that there are no bias choices and would be 100% representative of the overall business market in every single type of business. If you choose the first 100 phone numbers you are choosing from only a handful of the same types of business and leaving out a lot of other types of business. This makes it impossible for the information gathered to be representative of the entire market.

Step-by-step explanation:

hope  this helps


Related Questions

n=3, 3 and 4 I are zeros, f(1)=-68

Answers

The answer will be in the image below
Your welcome :)

Simplify this expression.

–6w + (–8) + 1 + (–7w)
A. –w – 7
B. –13w – 7
C. w + 9
D. 13w + 9

Answers

Answer:

-13w-7

Step-by-step explanation:

-6w+(-8)+1+(-7w)

-6w-8+1-7w

-6w-7w-8+1

-13w-8+1

-13w-7

Answer:

B. -13w-7

Step-by-step explanation:

First, let's simplify the problem by grouping the like terms together: (-6w),  (-7w), and (-8), (1).

Second, now that you know the like terms solve them each individually:

(-6w) + (-7w) = -13w

(-8) + 1 = -7

So your answer is -13w minus -7

It is actually 2m/s2

Answers

Answer:

what is the question here?

Step-by-step explanation:

Mary says that the expression
6 + 8y - 3+ 4y is equivalent to the expression
12y + 3. Is Mary correct?

Answers

Answer:

Yes

Step-by-step explanation:

6 + 8y - 3+ 4y

Add like terms

(8y+4y)+(6-3)

12y+3

Use the GCF and the Distributive Property to find the sum.
14 +21

Answers

Answer:

35

Step-by-step explanation:

14+21=7(2+3)=7(5)=35

Answer:

14+21= 35

Step-by-step explanation:

the graph shows the number of girls and boys that were members of the schools debate during 5 years team

Answers

Answer: The number of girls on the debate team increased each year during these 5 years.

Step-by-step explanation:

can someone please help me??

Answers

Answer:

the answer is c ...............

Answer:

It could be A or C because they are the same

Step-by-step explanation:

please helpppppp

Hayden and Jamie completed 20 math problems together. Jamie completed 2 more than twice the number that Hayden completed. Let p represent the number of math problems Hayden completed. Write an equation that can be used to find the number of math problems that Jamie completed.​

Answers

Answer:

3p + 2 = 20

Step-by-step explanation:

p = number of math problems Hayden completed

Jamie completed 2 more than = +2

twice the number that Hayden completed = x2

So 2p+2 = number of problems Jamie completed

Since they completed a total of 20 questions, the equation would need another +

(Hayden's problems) + (Jamie's problems) = 20

(p) + (2p+2) = 20

This can be simplified to 3p + 2 = 20, and you can then solve for p

9/10 + 3/4 in simplest form?

Answers

Answer:1 13/20

Step-by-step explanation:

i took the test and it was correct pls check out my yt channel its hailey Azbell

a cereal box says that now it contains 20 more how much cereal comes now

Answers

Answer:

20 more than before

Step-by-step explanation:

2
882 = 2 x 32 x 72
60 = 22 x 3 x 5
(a) Find the highest common factor (HCF) of 882 and 60.

Answers

Answer:

6

Step-by-step explanation:

60 = 22 × 3 × 5

882 = 2 x 32 x 72

-----------------------------

HCF = 2 x 3

        = 6

The clerk at a store worked 45 hours one week.He worked an equal number of hours each day on Monday through Friday.He worked an extra 5 hours on Saturday.How many hours did he work on each weekday

Answers

Answer:

he worked 40 hours on the the weekdays

Step-by-step explanation:

Ben's living room is a rectangular measuring 12 yards x 204" by how many feet does the length of the room exceed the with the length of the room exceeds the width by blank feet

Answers

Answer:

The length of the room exceeds the width by 19 feet

Step-by-step explanation:

From the question, the room measures 12 yards x 204", that 12 yards x 204 inches. To determine by how many feet the length of the room exceeds the width, we will first convert both units of measurement ( yards and inches) to feet.

To convert 12 yards to feet,

1 yard = 3 feet

∴ 12 yards will be 3 × 12 feet = 36 feet

To convert 204" to feet

12" = 1 foot

∴ 204" will be 204/12 feet = 17 feet

Hence, the room measures 36 feet × 17 feet

That is, Length of the room = 36 feet

and width of the room = 17 feet

Now, to determine by how many feet the length of the room exceeds the width, we will deduct the width of the room from the length of the room, that is,

36 feet - 17 feet = 19 feet

Hence, the length of the room exceeds the width by 19 feet.

4. Leroy creates customized engraved

birthday cards for his schoolmates.

He charges them $0.75 per card, plus a

dollar for each engraved letter in

the recipient's name. The equation

C=0.75 + l describes the cost of a card

in dollars, c, that has a certain number of

letters in the name, l.

Number of Letters

in Name

Cost of Card

(dollars)

3.75

5.75

6.75

8.75

If you have $10.75 to spend on a card,

how many letters can be in the recipient's

name?

Answers

Answer:

10

Step-by-step explanation:

C = 0.75 + L

For L = 3 ; Cost, C = 3.75

3.75 = 0.75 + 3L

3.75 - 0.75 = 3L

3 = 3L

L = 3/3

L = $1

C = 0.75 + 1L

If amount spent is $10.75; C = 10.75

10.75 = 0.75 + L

10.75 - 0.75 = L

10 = L

Number of letters = 10

By looking at the calculation below, write down a multiplication fact using the same numbers.
294÷3=98

Answers

Answer:

98 x 3 = 294 or 3 x 98 = 294

Step-by-step explanation:

Since 294 divided by 3 is 98, that means 294 is 3 times 98. So, we can say:

3 x 98 = 294

We can also say that 98 x 3 = 294 since it doesn't matter in which order you multiply.

93•8=294. —-///——-///——-

please help me

Find the value of x, given that 4(3x+2)=44.​

Answers

Answer:

X=3

Step-by-step explanation:

=> 4(3x+2)=44

=> 12x+8=44 [Multiply the parentheses by 4]

=> 12x=44 - 8 [Transpose 8 of L.H.S to R.H.S]

=> 12x= 36

=> x= (3)

Hope this helps you.

The answer 3 the guy above me did explain it lol but I checked his math and x is 3

The graph of y = f(x) is shown below. Determine the value of x when f(x)
3?

Answers

Answer:

this is a hard question

Step-by-step explanation:

i dont know

What is the measure of N

Answers

Answer:

No picture sorry

Newtons are a measurement of force. By definition, 1 N is the amount of force required to accelerate an object of mass 1 kg to 1

please mark in brain list

Please help it's due today!!!

Answers

Answer:

1. option 3

2. option 1

Step-by-step explanation:

look at the picture ...........

Answer:

The first one is 3 and 31/48

The second one is 25

Which expression is equivalent to 6x+8?
A 2(3x-4)
B 2(3x+4)
C 2(4x+6)
D 2(3x+8)

Answers

Answer:

B

Step-by-step explanation:

=> 6x+8

We see that 6 and 8 have following factors:

=> 2.3x+2.4

Taking 2 as common, we get

=> 2(3x+4)

This is equivalent to option B

will give brainliest to right answer


a line is translated. Which of these could be the results

Answers

Answer:

D

Step-by-step explanation:

D is the only choice that actually contains a line.

A is a ray.

B is a parabola.

C is a line segment.

Answer:

D...... .............

PLZ HELP I GIVE 10 POINTS

Answers

15/4 x 5/2 = 75/8
Just break it down and multiply

maths very easy class 8​

Answers

Answer:

Rs. 333

Step-by-step explanation:

Area of the surface of the cuboidal box to be painted = surface area of the cuboidal box - area of the base

✔️Surface area of the cuboidal box = 2(L*W + W*H + L*H)

L = 6 cm

W = 4 cm

H = 2.5 cm

Surface area of the cuboidal box = 2(6*4 + 4*2.5 + 6*2.5) = 2(24 + 10 + 15) = 2(49)

Surface area of cuboidal box = 98 cm²

✔️Area of base = L*W

= 6*4 = 24 cm²

Area of the cuboidal box to be painted = 98 - 24 = 74 cm²

✔️Cost of painting 74 cm² at Rs. 4.50 per cm² = 74 × 4.50 = Rs. 333

Josiah earns $7 an hour for washing cars as a summer job. Complete the table of order pairs to show his total earnings for several hours. Then express the relation as a graph. How much would Josiah earn for 12 hours of washing cars?

Answers

he would earn about 84 dollars in 12 hrs

Please give me the correct answer.​

Answers

Answer:

C

Step-by-step explanation:

The lake because its constantly increasing at 3 F per hour and at the beach its only 0.5 F per hour. The lake's temperature moved from 71 to 83 in 4 hours which is 12 F in 4 hours which means 3 F per hour. Hence, the lake's temperature was moving at a faster rate.

Find the measure of the missing angle.

Answers

Answer:

68

Step-by-step explanation:

90 - 22

68

I think it’s 68. Since there is a square that means is a 90° angle. 22-90=68.

68 is your answer.

80 times 30 plus 60 equals

Answers

Answer:

2460

Step-by-step explanation:

Hope this helps :)

Answer:

the awnser is 2460 have a nice day

Step-by-step explanation:

If a varies directly with b, write the constant of proportionality equation.
b = 2 and a = 10
options:
1. a=5b
2. k=5
3. a= 1/5b
4. b=5a

Answers

1. 10=5(2)
2.k=5
3. 10=1/5(2)
4.2=5(10)

what is the factored form of 2 (-8x - 3) + 18x?​

Answers

Answer:

Step-by-step explanation:

2(−8x−3)+18x

2x−6

=2(x−3)

The factored form of the given polynomial is 2(x-3).

What are factors of polynomial?

The factors are the polynomials which are multiplied to produce the original polynomial.

The given polynomial is 2(-8x-3)+18x

= -16x-6+18x

= 2x-6

= 2(x-3)

Therefore, the factored form of the given polynomial is 2(x-3).

To learn more about the factorisation of polynomial visit:

https://brainly.com/question/16789195.

#SPJ2

32 people in 8 car's unit rate

Answers

If there are 32 people in 8 cars, distributed evenly:

32/8 = 4 people per car

Answer:

32:8

Step-by-step explanation:

simplified it would be 4:1

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