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2 years ago

PLS I NEED HELP NOW!!!!!!!!!!!

Mathematics

2 answers:

castortr0y [4]2 years ago

8 0

Answer: wassup

Step-by-step explanation:

ololo11 [35]2 years ago

5 0

Answer: wassup

Step-by-step explanation:

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A survey was conducted that asked 1003 people how many books they had read in the past year. Results indicated that x overbar eq

Sergio [31]

Answer:

The 99% confidence interval would be given (11.448;14.152).

Step-by-step explanation:

1) Important concepts and notation

A confidence interval for a mean "gives us a range of plausible values for the population mean. If a confidence interval does not include a particular value, we can say that it is not likely that the particular value is the true population mean"

$s=16.6$ represent the sample deviation

$\bar X=12.8$ represent the sample mean

n =1003 is the sample size selected

Confidence =99% or 0.99

$\alpha=1-0.99=0.01$ represent the significance level.

2) Solution to the problem

The confidence interval for the mean would be given by this formula

$\bar X \pm z_{\alpha/2} \frac{s}{\sqrt{n}}$

We can use a z quantile instead of t since the sample size is large enough.

For the 99% confidence interval the value of $\alpha=1-0.99=0.01$ and $\alpha/2=0.005$ , with that value we can find the quantile required for the interval in the normal standard distribution.

$z_{\alpha/2}=2.58$

And replacing into the confidence interval formula we got:

$12.8 - 2.58 \frac{16.6}{\sqrt{1003}}=11.448$

$12.8 + 2.58 \frac{16.6}{\sqrt{1003}} =14.152$

And the 99% confidence interval would be given (11.448;14.152).

We are confident that about 11 to 14 are the number of books that the people had read on the last year on average, at 1% of significance.

3 0

3 years ago

Solve the equation<br> cb – 20 = –10 for b.

Ymorist [56]

ANSWER: B = 10/C
You have to isolate the variable by dividing each side by factors that don’t contain the variable

3 0

2 years ago

Where does the circumference of each kind of triangle lie? Question 1 options: Inside the triangle. Outside the triangle. On the

stiks02 [169]

Answer:

Inside the triangle - Acute Triangle

Outside the triangle - Obtuse Triangle

On the hypotenuse - Right Triangle

Step-by-step explanation:

The <u>circumcenter</u> is the point where the perpendicular bisectors of a triangle intersect.

In the special case of a right triangle, the circumcenter lies exactly at the midpoint of the hypotenuse.

The circumcenter of an acute triangle lies inside the triangle.

The circumcenter of an obtuse triangle lies outside the triangle.

4 0

2 years ago

A farmer finds there is a linear relationship between the number of bean stalks, nn, she plants and the yield, yy, each plant pr

Alex

The linear relationship in the form y = y = 3n + 72

What is linear relationship?

In statistics, a straight line of correlation between two variables is referred to as a linear relationship (or linear association). The mathematical equation y = mx + b can be used to represent linear relationships graphically.

<h3>According to the given information :</h3>

Each plant generates 34 oz of beans when she plants 30 stalks, and 33 stalks results in 33 oz of beans per plant, according to the information we have provided.

Equation 1 using data 1:

y = mn + b

Equation 1 using data 1:

30 = 34m + b

Equation 2 using data 2:

33 = 33m + b

Subtract equation 1 from equation 2:

33 - 30 = 34m + b - 33m - b

3 = m

m = 3

Rearrange equation 1 to solve for b:

b = 34(3) - 30

b = 102 - 30

b = 72

Therefore the equation becomes:

y = 3n + 72

The linear relationship in the form y = y = 3n + 72

To know more about linear relationship visit:

brainly.com/question/28158670

#SPJ4

5 0

2 years ago

If you have a number by using multiplication and it gives you 13

Stolb23 [73]

The answer is 7.21...

3 0

3 years ago

Read 2 more answers