A researcher asked five of his doctor friends if they thought the new Brand X medicine that he
developed was effective. Four responded "yes." The researcher used the results to write a TV
advertisement claiming that "4 out of 5 doctors prefer Brand X medicine." Is this a valid inference?
Explain.
Use pencil and paper. Explain all of the factors that are necessary for an inference to be valid.
Is the inference valid? Explain. Choose the correct answer below.
OA. No, because the doctors asked are not a representative sample of the population of doctors.
OB. No, because 4 doctors said yes out of 9 who were asked.
OC. Yes, because 4 doctors said yes out of 5 who were asked.
OD. Yes, because the doctors asked are a representative sample of the population of doctors.

Answers

Answer 1

Answer:

OA

Step-by-step explanation:

First of all, this is not math its common sense

4/5 is just an ifference. in order to prove this, the general term would be asking a factor of the doctors such as 10, and then ask.

To prove this , use algebra.

4x/5x

Shorten to 1

0.8x/1x

So you would theoretically be getting infinite amounts of doctors. but still 4/5 of them will say yes.

This is false because N0 is a cardinal number system where is omega is a ordinal.

asking five people is indefinitely not enough to determine a representatoive sample of every doctor in the world.


Related Questions

X,Y and Z are three points on a unit sphere (i.e. a sphere with radius 1). The space
distance between any pair of the three points is √2 . An ant can only
crawl on the surface of the sphere. The ant starts from point X, passes through points Y and Z, and then returns to X. What is the shortest possible distance of this trip?

Answers

Answer:

The shortest possible distance is 5/3*pi.

Step-by-step explanation:

Answer:

The shortest possible distance is 5/3*pi.

Step-by-step explanation:

Find the value of x please.

Answers

Answer:

83

Step-by-step explanation:

its a guess bc its a right triangle and right triangle is 90 degrees minus 7 is 83

Answer:

I think it is 93 degrees

Step-by-step explanation:

A triangle has a full angle of 180 degrees

47+47 = 94

180-94=86

x-7=86

x = 93

ALGEBRA 1 HOMEWORK- I NEED HELP ASAP!!! thank you!!!!

Answers

i’ll try working it out, if i don’t answer then i didn’t get the answer.
i tried working it out but i couldn’t do it i hope someone else can help you

Just need to know the unit rates ! Will make brain !!

Answers

Answer:

bar bar bar bar bar barar bavr

1.25
7.5
8
I hope this helps

Determine whether each element of the set {7,8,9} makes the inequality 2x−3<15 true.

Answers

Answer: 7- true 8- true 9- false

Step-by-step explanation:

-7, -8

Plug in the values, if they are less than 15, then it is true:)

HELP ASAP!!! (KHAN ACADEMY...USE IMAGES)

Answers

Answer:

8/3 is the unit rate of change

for graph: second point on the line coordinates will be (3,8)

8/3 = unit rate of change
(3,8) are coordinates

in a three digit number, the hundreds digit is one more than the ones digit and the tens digit is twice the hundreds digit. If the sum of the digits is 11, find the number. If the hundreds digit of the number is x, the equation will be? 20 Points to solve and brainliest.

Answers

Answer:

I am not sure, but I think 362 is the answer

Step-by-step explanation:

hundred digit:x

tens digit:2x

ones digit:x-1

x+2x+x-1=11

4x=12

x=3

number=362

362 is the answer because i learned this yesterday

helpppp plzzz...plz give steps

Answers

Answer:

Volume of hemisphere =

[tex] \frac{2}{3} \pi \: r {}^{3} [/tex]

Given volume =

[tex]18\pi \: cube[/tex]

[tex] \frac{2}{3} \times \frac{22}{7} \: {r}^{3} = 18 \times \frac{22}{7} [/tex]

So pi is there on both the sides so it will be cut from both LHS and RHS

[tex] \frac{2}{3} \times r {}^{3} = 18[/tex]

[tex]2 \times r {}^{3 } = 18 \times 3[/tex]

[tex]2 \times r {}^{3} = 54[/tex]

[tex]r {}^{3} = \frac{54}{2} [/tex]

[tex]r {}^{3} = 27[/tex]

[tex]r = 3[/tex]

Therefore value of r=3 inches

If you are helped with my answer pls tag me brianliest I really want it... Plzz

THANK YOU

R=3 inches that’s the answer

im failing math rn and really need help so pls help. Find the value of xin the triangle shown below.

Answers

Answer:

x = 10

Step-by-step explanation:

Pythagorean Theorem = a² + b² = c²

6² + 8² = c²

36 + 64 = c²

100 = c²

c = 10

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

Answer:

10

Step-by-step explanation:

pythagorean thereom

6^2 + 8^2 = c^2

100 = C^2

c = 10

11. Which operation should be performedfirst to solve the inequality below? * 7x−4≤19

Answers

Answer:

First add 4 to each side

Step-by-step explanation:

7x−4≤19

First add 4 to each side

7x−4+4≤19+4

7x≤23

Then divide by 7

7x/7≤23/7

x≤23/7

The answer above is correcttttttttttttttttttt

Which of the following is equal to 2?


Answer choices:

A. 6 + 4 divided by (2 + 1) x 3

B.(6 + 4 divided by 2) - 1 x 3

C.6 + (4 divided by 2) + 1x3

D.(6 + 4) divided by 2 - 1 x 3


NO LINKS!!!!

Answers

Awnser is A 6+4 divided by [2+1]x3
Answer A because 6+4 divided by (2+1)x3 is 2

Help with math earn 10 points

Answers

Answer:

2 I think

Step-by-step explanation:

It is 2 (Unnecessary Stuff)

Hi this is 7th grade geometry with screenshot

Answers

Answer:

80

Step-by-step explanation:

ㄥAEC+160=180

ㄥAEC=20

ㄥAEC+x+80=180

20+x+80=180

x=80

There is a more simple method

x+80=160

x=80

It’s 80 because it is and it’s right

Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.

Solve the following equation.
U + 2 = 4

Answers

Answer:

U=2

Step-by-step explanation:

This is a simple one-step algebraic equation. In algebra to solve equations, you should use the properties of equality. The properties say that an equation remains true as long as the same thing happens on both sides. For this equation, the property of subtracting should be used; this property states that the same number can be subtracted from both sides. To find U, isolate the variable by subtracting 2 from both sides. This leaves U=2.

U +2= 4
-2 -2
U = 2
2 + 2= 4

Pls, help due today!

Answers

Answer:

ok

Step-by-step explanation:

I line Z is parallel to the x axis Lindsay is perpendicular to the Y axis

Coordinate A(4,6) coordinate B(8,6) coordinate C(10,6) coordinate D(1,6)

Please mark brainliest

Luciana is starting a two-week social media campaign to attract new subscribers to BlastOn, a music website for teens. She has the following data from her last campaign to help plan her strategy.

Based on this data, what should be Luciana’s strategy for the new campaign?

If your answer is incomplete or confusing PLEASE DO NOT write the answer down. Or YOU will be REPORTED!!!!

Answers

Answer:

Luciana should post 5 social media posts per day.

Step-by-step explanation:

When Luciana posts 5 posts in a day, she gains more subscribers than any other amount of posts.

hope this was useful

Petra jogs 4 miles in 36 minutes. At this rate, how long would it take her to jog 12 miles?

Answers

it would take about 108 minutes to jog 12 miles

Answer:

90 minutes or 1 hour and 30 minutes.

Step-by-step explanation:

How do I solve this?

Answers

Answer:

We know the width maybe 22ft and at its widest.

IF we say 3 triangles can be fit into a polygon given 2 sides then we 180 x 3 = 560 degree if its 3 rectangles then if it is easier to make 4 rectangles if square shape we can subtract the smaller measures of the missing rectangle.

With triangles;

The number of triangles is always 2 less than that that of its sides.

= 3 triangles + 2 = 5 sides.

The sum of interior angles

(n-2) x 180 = 540 degree

5-2 x 180

To determine the amount of sides; we remember

(n-2) 180

360 = (n-2) 180

+360 = 180 -360 +180

+360 = 180 = (3 triangles with 180)

900/180 = 5 sides.

If we say 5 triangles created with 3 given lengths

then same rule applies n-2 (180)

=7 sides

= if regular shape largest line 22 x 7 = 154 ft sq = Area.

Answer:

374

Step-by-step explanation:

First do the area of the triangle 7 x 22 = 308 308/2 = 154 22 x 10 = 220 220+154 =374

Which two statements about the volumes of the prisms are true?

Answers

The answer for this question is A
Answer: A
Explanation: when you solve it

find surface area of the square pyramid!!! pls i need help with explaining!!!!!

Answers

Answer:

39 square yards

Step-by-step explanation:

The base is a square, so the area is 3 x 3 = 9.

Each side is a triangle, and the formula for that is (1/2)(base)(height)

The base of each side is 3 and the height of each is 5. There are 4 of those, so it's 4 x (1/2)(3)(5) = (2)(3)(5) = 30

Add the base and sides

30 + 9 = 39

Answer:

39 yards

Step-by-step explanation:

surface area = A + [tex]\frac{1}{2}[/tex] ps

A = area of the base

p = perimeter of the base

s = slant height

the base of the pyramid is a square, all sides and angles are equal

; 3 yards

; area of a square  = l x w

; area of the base = 9 yd (A)

perimeter of the base ; 3 + 3 + 3 + 3 = 12 yd (p)

slant height = 5 yd (s)

; sub it into the formula

surface area  = 9 + [tex]\frac{1}{2}[/tex] x 12 x 5

surface area = 39 yd

Question 4 (Yes/No Worth 1 points)
(02.01 LC)
Is the following relation a function?
х y
6 -1
-1 2
4 3
0 3

Answers

Answer:

no, I don't think so.

Step-by-step explanation:

sry if I'm wrong I'm still learning

no it’s not a function

which angles are adjacent to each other ? select all that apply

Answers

I think the answer is 1 and 2
I’m not too well at these kinds of things but I am really sure that the answer is 1 and 4.

Hey PLZZZZ HELP!

The profits earned in a year by some companies in a city are shown below: Company Profit A $160,000 B $140,000 C $130,000 D $1,120,000 E $150,000 Based on the data, should the mean or the median be used to make an inference about the profits earned by these companies? Mean, because it is in the center of the data Median, because it is in the center of the data Mean, because there are no outliers that affect the mean Median, because there is an outlier that affects the mean

Answers

Answer:

mean because there is an outlier

Step-by-step explanation:

since there is an outlier that affected the mean which is company D, it can only be mean because the outlier is too big.

Mean. It gives a better idea of the profits.

ASAP! Adrians cat ate 1/3 of a bag of cat treats in September and 1/3 of the same bag of treats in October. What part of the bag of cat treats did Adrians cat eat in both months?

Answers

he ate 2/3 of the cat treats in both months

I NEED HELP ILL GIVE BRAINLY BUT PLZ EXPLAIN NOT GUESSES

Answers

Bro ,, The values are ,, These are absolute correct answers.

1.45 degrees

2.45 dehrees

3.135 degrees

4.135 degrees

5.45 degrees

6.135 deegres

please give brainliest

Answer:

Step-by-step explanation:

for first fox

let it be x

x + 135 degree = 180 degree (being straight line)

x = 180 - 135

x = 45 degree

therefore figure upper box is 45 degree

for box that is  just below 135 degree

first fox = box just just below 135 degree

45 degree = box just below 135 degree

for box that is just below 45 degree

box that is just below 45 degree = 135 degreee (being vertically opposite angles)

for the box that lies on the left side of the transversal

let the fourth box that les on the left side be x

135 + x = 180 degree (being co interior angle)

x = 180 - 135

x = 45 degree

for the box that lies on the right side of the transversal .Let it be y

45 + y = 180 degree

y = 180 - 45

x = 135 degree

y = last box that lies on the left side of 45 degreeing vetically opposite angles)y

last box = 135 degree

helppp plzzzz...also give steps..plz

Answers

Answer:

4.5 cm

Step-by-step explanation:

The volume of a sphere is given by

V = 4/3 pi r^3

121.5 pi = 4/3 pi r^3

Divide each side by pi

121.5 = 4/3  r^3

Multiply each side by 3/4

3/4 *121.5 = 3/4 * 4/3  r^3

91.125 = r^3

Take the cube root of each side

(91.125)^ (1/3) = r^3 ^(1/3)

4.5 = r

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PLEASE HELP ASAP!
Consider the 720 permutations of the numbers 1, 2, 3, 4, 5, 6. In how many of these permutations do exactly 3 of the numbers end up in the positions where they started?

Answers

The set {1,2,3,4,5,6} has a total of 6! permutations

a. Of those 6! permutations, 5!=120 begin with 1. So first 120 numbers would contain 1 as the unit digit.

b. The next 120, including the 124th, would begin with 2.

c. Then of the 5! numbers beginning with 2, there are 4!=24 including the 124th number, which have the second digit =1

d. Of these 4! permutations beginning with 21, there are 3!=6 including the 124th permutation which have third digit 3

e. Among these 3! permutations beginning with 213, there are 2 numbers with the fourth digit =4 (121th & 122th), 2 with fourth digit 5 (numbers 123 & 124) and 2 with fourth digit 6 (numbers 125 and 126).

Lastly, of the 2! permutations beginning with 2135, there is one with 5th digit 4 (number 123) and one with 5 digit 6 (number 124).

∴ The 124th number is 213564

Similarly reversing the above procedure we can determine the position of 321546 to be 267th on the list.

The set {1,2,3,4,5,6} has a total of 6! permutations a. Of those 6! permutations, 5!=120 begin with 1. So first 120 numbers would contain 1 as the unit digit. B. The next 120, including the 124th, would begin with 2. c. Then of the 5! numbers beginning with 2, there are 4!=24 including the 124th number, which have the second digit =1 d. Of these 4! permutations beginning with 21, there are 3!=6 including the 124th permutation which have third digit 3 e. Among these 3! permutations beginning with 213, there are 2 numbers with the fourth digit =4 (121th & 122th), 2 with fourth digit 5 ​​(numbers 123 & 124) and 2 with fourth digit 6 (numbers 125 and 126). Lastly, of the 2! permutations beginning with 2135, there is one with 5th digit 4 (number 123) and

find the ratio if it is given that ...

1) 6a-3b=5b

2) a+b=3a

3) 2a-3b/5 = a+b/2

Answers

Here is the answer to your question as This is the way I think it is solved
I agree with the person on top up

I NEED THIS ASAP!!!!!!!!

Answers

Answer:

A

Step-by-step explanation:

A: -a/-b=c (negative number divided by negative number is positive number A is correct)

B: -a x b =c (negative number times positive number is become a negative number so correct answer is -c B is wrong)

C: -a/b=c (negative number divided by positive number is become a negative number so correct answer is -c C is wrong)

D: -a x -b=-c (negative number times negative number is become a positive number so correct answer is c D is also wrong)

Please answer correctly

Answers

Answer:

9 x 10 x 7 and 9 x 4 x 5

Step-by-step explanation:

I explained in the other question you asked

Answer is 1-4-7-&-&-9-5-
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