​A scientist asked four of her dentist friends if they thought the new Brand X sugar-free gum that she developed was effective.Three responded​ "yes." The scientist used the results to write a TV advertisement claiming that ​"3 out of 4 dentists prefer Brand X sugar-free gum​." 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.

A.​Yes, because 3 dentists said yes out of 4 who were asked.

B.No, because 3 dentists said yes out of 7 who were asked.

C.No, because the dentists asked are not a representative sample of the population of dentists.

D.​Yes, because the dentists asked are a representative sample of the population of dentists.


​

Answer:

y = 4x + 6

Step-by-step explanation:

Gradient is already given as 4.

We proceed straight away to solving for the equation

Answer: 20x

expalnation: Not sure about the second one  but the first problem is a trick problem your finding the mean. but it already brought the equation down to 1 so 20 is the answer  

Answer:

A

D

E

Step-by-step explanation:

Answer:

Step-by-step explanation:

volume = 34cm³

volume = 4/3×π×radius³

34cm³ = 4/3 × 3.14 × radius³

34cm³ = 12.56/3 × radius³

radius³ = 34×3/12.56

radius³ = 8

radius = ³√8

radius = 2cm

diameter = 2×radius

= 2×2

= 4cm

FOLLOW ME PLEASE

Answer:

Tilt your head back and allow your mouth to hang open widely.

Contract the back of the throat and breathe deeply through your mouth.

Inhale and exhale completely while relaxing the shoulders.

When the yawn comes “reach and extend into it” to stretch the jaw muscles.

Step-by-step explanation:

Answer:

40

Step-by-step explanation:

AREA=LW

L₁W₁=40

L₂W₂=160

x(L₁W₁)=L₂W₂

x(L₁W₁)=L₂W₂

x(40)=160

x=40

Answer:

2 meters longer

Step-by-step explanation:

you can just do 3.5 - 1.5 = 2 meters

Answer:

13

Step-by-step explanation:

Answer:

the perimeter equals 40m

explanation:

P=4a=4 x 10=40m

Answer:

Find two consecutive odd integers whose product is 23 more than their sum. Let x & x+2 be the 2 integers.

Step-by-step explanation:

The value of two consecutive odd positive integers are 5 and 6.

What are Integers?

A whole that can be positive , negative and zero is called integers.

Given that;

The product of two integers is 23 more that their sum.

Let two consecutive odd positive integers are x and x + 2.

Now, By the given condition we can formulate;

x (x + 2) = 23 + x + (x + 2)

x² + 2x = 23 + 2x + 2

x² + 2x = 25 + 2x

x² = 25

Take square root;

x = √25

x = ± 5

Since, Numbers are positive.

So, x = 5

And x + 1 = 5 + 1 = 6

Thus, The value of two consecutive odd positive integers are 5 and 6.

Learn more about the integers visit:

https://brainly.com/question/855270

#SPJ2

Answer:

Area = 32

Step-by-step explanation:

Remark

The standard area for a Triangle is

Area = 1/2 * b * h

Givens

b = 16

k = 1/2

h = 4

Solution

Area = 1/2 * b * h

Area = 1/2 * 16 * 4

Area = 32

Answer:

B is correct.

Answer:

m = -4/3 b = 0

Step-by-step explanation:

Slope formula is [tex]\frac{y_{2} - y_{1}}{x_{2} - x_{1}}[/tex]

[tex]\frac{-4-0=-4}{3-0=3}[/tex]

The slope is -4/3. The line intersects the y-axis at (0 , 0) so b = 0. This can be verified by plugging one of the points into the equation.

Answer:

7) Decay

8) Growth

9) Growth

10) Growth

Step-by-step explanation:

7) As x increases, y is decreasing because as you add more value to the exponent, 1/3 gets smaller and smaller.

8) As x increases, y is increasing because as you add more value to the exponent, 2 gets bigger and bigger.

9) As x increases, y is increasing because as you add more value to the exponent, 2 gets bigger and bigger.

10) As x increases, y is increasing because as you add more value to the exponent, 2 gets bigger and bigger.

Answer:

The coat originally cost $20.

Step-by-step explanation:

The original cost is of x.

At a sale, coats were sold for $11 each. This price was 55% of a coat's original price.

This meas that:

[tex]0.55x = 11[/tex]

How much did a coat originally cost?

This is the solution for x for the equation above. So

[tex]x = \frac{11}{0.55} = 20[/tex]

The coat originally cost $20.

Answer:

20

Step-by-step explanation:

so when setting up you put 11/x=55/100 then cross multiply. then you should get 55x=1,100 .

divide 1,100 by 55 then you should get your answer which is

x=20 :)

i need help ples!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer:

In mathematics, a ratio indicates how many times one number contains another. For example, if there are eight oranges and six lemons in a bowl of fruit, then the ratio of oranges to lemons is eight to six. Similarly, the ratio of lemons to oranges is 6∶8 and the ratio of oranges to the total amount of fruit is 8∶14.

Step-by-step explanation:

the quantitative relation between two amounts showing the number of times one value contains or is contained within the other.

Answer:

9. representative because she samples a small group of people to gather representative data for a larger group

10. biased because hes asking people their favorite (opinionated word) sport at a sports game. people at that game most likely are there because it is their favorite

11. 9 students

12. median = 11

Answer:

y=13.2

Step-by-step explanation:

Since the difference in height is 7 feet all you need to do is add 7 feet to 6.2 which will equal 13.2

Answer:

13.2

Step-by-step explanation:

I'm assuming we need to simplify this expression. (Tip when you are writing n squared, please write n^2, not n2.)

Since we can see that there is a 5 in each term inside the ( ), we simplify have to remove that if the whole thing is going to be divided by 5.

Answer:

(15n^2-5n+45)/5

=3n^2-n+9

Answer:

3n^2-n+9

Step-by-step explanation:

You would want to divide the 5 between each of the terms. 15n^2 ÷ 5 is 3n^2. 15 ÷ 5 is 3. The n^2 stays, so 3n^2. -5 ÷ 5 is -1. We don't have to worry about writing the -1. Rather, just write the -n, it is the same as writing -1n. Lastly, 45 ÷ 5 is 9. You have to put the terms together in standard form. Standard form is just writing the numbers from greatest power to least power. The 3n^2 would come first since 2 is the greatest power. Next would be the -n, and lastly the 9. The 9 is the constant, which always comes last. A constant would be a number without a variable after it, like 2x is not a constant but just 2 is. Therefore, the answer is 3n^2-n+9.

Answer:

None

Explanation:

-3(2+7) = -3×9 = -27

-6+21 = 15

-21+6​ = -15

Hence there is no equivalence

Answer:

it is a reflection

the points are 8 units apart

Hope this helped! Have a nice day! Plz mark as brainliest!!!

-Lil G

Answer:

i thinks it 8 blocks!! sorry if im wrong