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1 year ago

Regression is a statistical technique developed by blaise pascal. a. false. b. true.

1 answer:

4 0

Blaise Pascal invented the statistical method known as regression. False. The author learned through the reading that adding a bathroom increases home prices more than adding a bedroom does.

What does a statistical regression mean?

A statistical method called regression links a dependent variable to one or more independent (explanatory) variables.
A regression model can demonstrate whether changes in one or more of the explanatory variables are related to changes in the dependent variable.

What does regression mean?

Regress, from which the word "regression" is derived, means "to go back" in Latin (to something).
Regression is the method that, in this way, enables "going back" from muddled, challenging-to-interpret data to a clearer and more understandable meaningful model.

Learn more about regression

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Fine the circumference of the circle show, correct to 1 decimal place

CaHeK987 [17]

Answer:

C = 56.5 cm

Step-by-step explanation:

<h3>The circumference formula is C = πd. If the diameter, d, is 18 cm, then the circumference of this circle is </h3><h3></h3><h3>C = π(18 cm) ≈ 18π cm ≈ 56.5 cm</h3>

6 0

2 years ago

A junk box in your room contains fourteen old batteries, seven of which are totally dead. You start picking batteries one at a

MrMuchimi

Answer:

A junk box in your room contains fourteen old batteries, seven of which are totally dead.

So, number of good batteries = $14-7=7$

a) The first two you choose are both good.

There is a 7/14 chance that we will pick a good battery.

Now there are 13 batteries left and out of that there are only 6 good ones remaining, so this becomes 6/13.

So, combined probability is = $\frac{7}{14}\times \frac{6}{13}$

= 0.23

b) At least one of the first three works.

$\frac{7}{14} \times \frac{6}{13} \times \frac{5}{12} =0.096$

And at least one is good battery, we get : $1-0.096=0.904$

c) The first four you pick all work.

There is a probability of 7/14 for the first one to work, 6/13 for the second, 5/12 for the third and 4/11 when the fourth is good, combined we get by multiplying all:

$\frac{7}{14}\times \frac{6}{13}\times \frac{5}{12}\times \frac{4}{11}=0.0344$

d) You have to pick five batteries to find one that works.

This condition means that we pick 4 bad batteries and 1 good battery.

The probability of picking 4 bad batteries is -

$\frac{7}{14}\times \frac{6}{13}\times \frac{5}{12}\times \frac{4}{11}=0.0344$

Since there are 7 good batteries remaining in 10 batteries so we will multiply 7/10 in 0.0344 to know the fifth one that finally works.

This becomes = $0.0344\times0.7=0.024$

5 0

3 years ago

The expression x + 18 represents the perimeter of the rectangle shown. Write an expression that represents the length of the rec

IgorLugansk [536]

Answer:

can you add a picture

Step-by-step explanation:

5 0

2 years ago

Simplify. (4^3)5 <br> a. 4^-2 <br> b. 4^3 <br> c. 4^8 <br> d. 4^15

Bas_tet [7]

I would say C, but not sure :)

5 0

3 years ago

<img src="https://tex.z-dn.net/?f=%5Csin%20%5Cfrac%7B%20%5Cpi%20x%7D%7B6%7D%20%3D%20x%5E%7B2%7D%20-6x%2B10" id="TexFormula1" tit

Rainbow [258]

The range of the sine function is $[-1,1]$ , so:

$x^2-6x+10\geq-1 \wedge x^2-6x+10 \leq1\\\\
x^2-6x+10\geq-1\\
x^2-6x+11\geq0\\
\Delta=(-6)^2-4\cdot1\cdot11=36-44=-8\\
x\in \mathbb{R}\\\\
x^2-6x+10\leq1\\
x^2-6x+9\leq0\\
(x-3)^2\leq0\\
(x-3)^2=0\\
x-3=0\\
x=3\\\\
x\in \mathbb{R} \wedge x=3\\
x=3
$

So 3 is the only possible value the function $x^2-6x+10$ can take as an argument. Let's see if 3 is a solution.

$\sin\dfrac{\pi\cdot3}{6}=3^2-6\cdot3+10\\
\sin \dfrac{\pi}{2}=9-18+10\\
1=1
$

Therefore it is :)

5 0

3 years ago