pancha3
2021-10-04
Answered

Evaluate the linear equation, $y=4x-7$ ,at the value $x=2.$

$y=?$

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nitruraviX

Answered 2021-10-05
Author has **101** answers

Regression analysis:

Regression analysis estimates the realationship among

variables.

The general form of first-order regression model is y-cap=

${\beta}_{0}+{\beta}_{1}\text{}x+\u03f5,$

Where,the variable y is the dependent variable that is to be madelled or

predicted,the variable x is the independent variable that is used to

predict the dependent variable,and$\u03f5$ is the error term

Given linear equation is$y=4x-7$ .The given value of x is 2.Thus,the value

of y at given value$x=2$ is as follows:

$y=4x-7$

$=4\times 2-7$

$=8-7$

$=1$

Regression analysis estimates the realationship among

variables.

The general form of first-order regression model is y-cap=

Where,the variable y is the dependent variable that is to be madelled or

predicted,the variable x is the independent variable that is used to

predict the dependent variable,and

Given linear equation is

of y at given value

asked 2021-09-08

Lynbrook West , an apartment complex , has 100 two-bedroom units. The montly profit (in dollars) realized from renting out x apartments is given by the following function.

$P\left(x\right)=-12{x}^{2}+2136x-41000$

To maximize the monthly rental profit , how many units should be rented out?

What is the maximum monthly profit realizable?

To maximize the monthly rental profit , how many units should be rented out?

What is the maximum monthly profit realizable?

asked 2021-02-05

Use polar coordinates to find the limit. [Hint: Let $x=r\mathrm{cos}{\textstyle \phantom{\rule{1em}{0ex}}}\text{and}{\textstyle \phantom{\rule{1em}{0ex}}}y=r\mathrm{sin}$ , and note that (x, y) (0, 0) implies r 0.]
$\underset{(x,y)\to (0,0)}{lim}\frac{{x}^{2}-{y}^{2}}{\sqrt{{x}^{2}+{y}^{2}}}$

asked 2021-11-13

1) A group of preschooters has 63 boys and 27 girl. What is the ratio of boys to all children?

asked 2021-12-11

Answer the following questions about an ANOVA analysis involving three samples.

a. In this ANOVA analysis, what are we trying to determine about the three populations they’re taken from?

b. State the null and alternate hypotheses for a three-sample ANOVA analysis.

c. What sample statistics must be known to conduct an ANOVA analysis?

d. In an ANOVA test, what does an F test statistic lower than its critical value tell us about the three populations we’re examining?

a. In this ANOVA analysis, what are we trying to determine about the three populations they’re taken from?

b. State the null and alternate hypotheses for a three-sample ANOVA analysis.

c. What sample statistics must be known to conduct an ANOVA analysis?

d. In an ANOVA test, what does an F test statistic lower than its critical value tell us about the three populations we’re examining?

asked 2022-01-07

Prove multivariable function is surjective

The function is

asked 2022-06-16

Let ${x}_{1},...,{x}_{25}>0$ be such that $\sum _{i=1}^{25}{x}_{i}=4350$ and $\sum _{i=1}^{25}{x}_{i}^{2}=757770.25$.

From the first equality alone, we know that at least one of the ${x}_{i}$'s must be less than or equal to $\frac{4350}{25}=174$. From the second equality alone, we know that at least one of the ${x}_{i}$'s must be less than or equal to $\sqrt{\frac{757770.25}{25}}=174.1$, which is less useful than the first bound. My question is whether we can get a better bound, i.e. to find the least upper bound of $min\{{x}_{1},...,{x}_{25}\}$, when we use both equalities together. I appreciate any comments or hints.

From the first equality alone, we know that at least one of the ${x}_{i}$'s must be less than or equal to $\frac{4350}{25}=174$. From the second equality alone, we know that at least one of the ${x}_{i}$'s must be less than or equal to $\sqrt{\frac{757770.25}{25}}=174.1$, which is less useful than the first bound. My question is whether we can get a better bound, i.e. to find the least upper bound of $min\{{x}_{1},...,{x}_{25}\}$, when we use both equalities together. I appreciate any comments or hints.

asked 2021-09-04

Solve each problem and simplify it with no variables

what is

What is