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3 years ago

I will a!or u BRAINLIEST pls answer this question!!!

Mathematics

2 answers:

Alex_Xolod [135]3 years ago

8 0

I think it’s B I’m not surr

Veseljchak [2.6K]3 years ago

6 0

It’s c lol hope this helps

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In a survey, 600 adults in a certain country were asked how many hours they worked in the

Snowcat [4.5K]

Answer:

C. Correct

Step-by-step explanation:

The interpretation of a confidence interval of x% is that we are x% that this interval contains the mean of the population.

So, for example, the interpretation of a confidence interval of 95% is that we are 95% that this interval contains the mean of the population.

In this problem, we have that:

Based on the results, a 95% confidence interval for mean number of hours worked was lower bound: 41.5 and upper bound: 45.6.

Also, the following affiration:

(A) There is a 95% chance the mean number of hours worked by adults in this country in the previous week was between 41.5 hours and 45.6 hours.

This is correct

So, the answer is:

C. Correct

5 0

3 years ago

Determine if there is a proportional relationship between the two quantities

Shalnov [3]

Answer:

The table a not represent a proportional relationship between the two quantities

The table b represent a proportional relationship between the two quantities

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form $k=\frac{y}{x}$ or $y=kx$

Verify each table

Table a

Let

A ----> the independent variable or input value

B ----> the dependent variable or output value

the value of k will be

$k=\frac{B}{A}$

For A=35, B=92 ---> $k=\frac{92}{35}=2.63$

For A=23, B=80 ---> $k=\frac{80}{23}=3.48$

the values of k are different

therefore

There is no proportional relationship between the two quantities

Table b

Let

C ----> the independent variable or input value

D ----> the dependent variable or output value

the value of k will be

$k=\frac{D}{C}$

For C=20, D=8 ---> $k=\frac{8}{20}=0.40$

For C=12.5, D=5 ---> $k=\frac{5}{12.5}=0.40$

the values of k are equal

therefore

There is a proportional relationship between the two quantities

The linear equation is equal to

$D=0.40C$

7 0

3 years ago

Help i am stuck on a question and i still dont know how to do it

drek231 [11]

Answer:

i think it is 1/26

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

<img src="https://tex.z-dn.net/?f=x-12%3D14" id="TexFormula1" title="x-12=14" alt="x-12=14" align="absmiddle" class="latex-formu

Wittaler [7]

If you’re tryouts bf to fin x it’s X=26

4 0

2 years ago

Read 2 more answers

Solve the quadratic equation: 2 + 4 = 0

dalvyx [7]

Answers is 6=0 I think.

$2 + 4 = 0 \\ 6 = 0$

8 0

3 years ago