PLEASE HELP
What is the slope of the line shown below? (Enter your answer as a decimal if
necessary.)
(1, 2)
(-1, -4)

Answer:

The area between z = 1.74 and z = 1.25 is of 0.065.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

The area between two values of Z is given by the subtraction of the pvalue of the larger value by the smaller.

The area between z = 1.74 and z = 1.25.

This is the pvalue of z = 1.74 subtracted by the pvalue of z = 1.25.

z = 1.74 has a pvalue of 0.959

z = 1.25 has a pvalue of 0.894

0.959 - 0.894 = 0.065

The area between z = 1.74 and z = 1.25 is of 0.065.

Answer:

10

Step-by-step explanation:

Rearrange in order, 5, 5, 8, 10, 11, 17, 21 and the median would be 10.

Answer:

B. 5x+6y+5z+2

Step-by-step explanation:

3x + 5y + 2z + 2x + y + 3z +5 -3 = 5x +6y + 5z +2

B

Answer:

the three numbers below are your answers. (in order)

Step-by-step explanation:

[tex]2*2=4\\4+5=9\\9+8=17[/tex]

Answer:

(a) [tex]b_1 =3.4[/tex] and [tex]b_0 = 83.7[/tex]

(b) [tex]y=83.7+3.4 x[/tex]

(c) [tex]r^2 = 0.790[/tex]

(d) [tex]\% Variation = 79.0\%[/tex]

(e) The expected earnings is: $110,900

Step-by-step explanation:

The data for the 10 sales person is as follows:

[tex]\begin{array}{ccc}{Years\ of Experience} & {Annual\ Sales(\$ 1000)} & {Salesperson} & {1} & {1} & {85} & {2} & {3} & {97} & {3} & {3} & {95}& {4} & {5} & {97}& {5} & {7} & {105}& {6} & {8} & {106}& {7} & {10} & {122} & {8} & {10} & {120} & {9} & {12} & {113} & {10} & {12} & {134}\ \end{array}[/tex]

Required

Perform a regression analysis using Microsoft Excel

Note

The question will be answered based on the result of the analysis performed by the application (See attachment 2)

See attachment 2 for the result of the analysis (I've highlighted the solution to each question on the attached file)

(a) b1 and b0

[tex]b_1 = 3.372767857[/tex]

[tex]b_1 \approx 3.4[/tex]

[tex]b_0 = 83.65625[/tex]

[tex]b_0 \approx 83.7[/tex]

(b) The estimated regression equation

The equation is of the form:

[tex]y =b_0 + b_1x[/tex]

Where:

[tex]b_1 =3.4[/tex]

[tex]b_0 =83.7[/tex]

So:

[tex]y=83.7+3.4 x[/tex]

(c) The coefficient of determination (r^2)

[tex]r^2 = 0.790361699[/tex]

[tex]r^2 \approx 0.790[/tex]

(d) Percentage of variation

To do this, we simply convert r^2 to percentage

[tex]\% Variation = r^2 * 100\%[/tex]

[tex]\% Variation = 0.790 * 100\%[/tex]

[tex]\% Variation = 79.0\%[/tex]

(e) Expected annual sales of a sales person with 8 years of experience.

Using the regression equation

[tex]y=83.7+3.4 x[/tex]

Where

[tex]x = 8[/tex] --- the years of experience.

So;

[tex]y = 83.7 + 3.4 * 8[/tex]

[tex]y = 83.7 + 27.2[/tex]

[tex]y = 110.9[/tex]

The expected earnings is: $110,900

Answer:

y = -4.3

Step-by-step explanation:

40 = -10(y + 0.3) {Step 1: Use the distributive property to multiply -10 by y + 0.3}

40 = -10y + -10(0.3)

40 = -10y - 3 {Step 2: Add 3 to both sides.}

40 + 3 = -10y

43 = -10y {Step 3: Divide both sides by -10}

43/-10 = y

-4.3 = y

y equals -4.3.

Answer:

y = -4.3

Step-by-step explanation:

40 = -10(y + 0.3)

40 = -10y - 3

-3. -3

43 = -10y

Divide 43 by -10

y equal 4.3

Answer:

length = 8; width = 3

perimeter = 22

area = 24

Step-by-step explanation:

L(- 1,3), M(2,3)

LM = |-1 - 2| = 3

M(2,3), N(2, - 5)

MN = |-5 - 3| = 8

length = 8; width = 3

perimeter = 2(L + W) = 2(8 + 3) = 22

area = LW = 8 × 3 = 24

Answer:

we estimate it and get

the answer is 25.53

Answer:

No they do not

Step-by-step explanation:

16 is positive -16 is negative they have different values. Hope this helps!

Answer:

3 f(x)

Step-by-step explanation:

this is very open-ended, (6y)/2 is equal to 3y

Answer:

15 1/2

Step-by-step explanation:

Answer:

15 1/2

Step-by-step explanation:

Answer: c. On average, a 1 percentage point difference in chemistry score is associated with a 0.919 percentage point difference in geometry score

Step-by-step explanation:

Given that:

Slope value = 0.91857341

The dependent and independent variables are ;

Dependent Variable: Geometry

Independent Variable: Chemistry

Slope is the rate of change in the dependent variable per unit change in the independent variable.

Hence, from the information given, we can conclude that for every 1% change in chemistry score (independent variable), there is a corresponding approximately 0.919% change in geometry score (dependent variable).

From the given data it can be concluded that on average, a 1 percentage point difference in chemistry score is associated with a 0.919 percentage point difference in geometry score. Hence option c) is correct.

Given :

Given the simple linear regression results that are:

The Dependent variable is Geometry.

The Independent variable is Chemistry.

Geometry = 3.6276926+0.91857341[tex]\times[/tex]Chemistry

Comparing the above equation with the slope-intercept form which is given by:

y = mx + c

Therefore, slope, m = 0.91857341.

It is also given that:

Sample size is 400

R2= 0.55808158

Estimate of error standard deviation: 9.417521

From the given data it can be concluded that on average, a 1 percentage point difference in chemistry score is associated with a 0.919 percentage point difference in geometry score. Hence option c) is correct.

For more information, refer to the link given below:

https://brainly.com/question/12402189

Answer: B

The series converges because it has a sum of 4.

Step-by-step explanation:

The convergence or divergence of a series depends on the sum of the series and its common ratio. The series converges because its sum is b

The series is given as:

[tex]\sum\limits^{\infty}_{n=1} 2 (\frac{2}{3})^n[/tex]

A geometric series is given as:

[tex]T_n = ar^{n-1}[/tex]

So, we rewrite the series as follows:

[tex]\sum\limits^{\infty}_{n=1} 2 (\frac{2}{3})^n = \sum\limits^{\infty}_{n=1} 2 (\frac{2}{3})^n[/tex]

Apply law of indices

[tex]\sum\limits^{\infty}_{n=1} 2 (\frac{2}{3})^n = \sum\limits^{\infty}_{n=1} 2 (\frac{2}{3})^{n-1} \times (\frac{2}{3})[/tex]

Rewrite

[tex]\sum\limits^{\infty}_{n=1} 2 (\frac{2}{3})^n = \sum\limits^{\infty}_{n=1} 2 \times (\frac{2}{3})(\frac{2}{3})^{n-1}[/tex]

[tex]\sum\limits^{\infty}_{n=1} 2 (\frac{2}{3})^n = \sum\limits^{\infty}_{n=1} \frac{4}{3}(\frac{2}{3})^{n-1}[/tex]

So, we have:

[tex]T_n = \frac{4}{3}(\frac{2}{3})^{n-1}[/tex]

Compare the above series to: [tex]T_n = ar^{n-1}[/tex]

[tex]a = \frac{4}{3}[/tex]

[tex]r = \frac{2}{3}[/tex]

The sum of the series to infinity is:

[tex]S_{\infty} = \frac{a}{1 - r}[/tex]

So:

[tex]S_{\infty} = \frac{4/3}{1 - 2/3}[/tex]

[tex]S_{\infty} = \frac{4/3}{1/3}[/tex]

[tex]S_{\infty} = 4[/tex]

i.e. [tex]\sum\limits^{\infty}_{n=1} 2 (\frac{2}{3})^n = 4[/tex]

Also:

The common ratio (r)

[tex]r = \frac{2}{3}[/tex]

[tex]r = \frac{2}{3}[/tex] [tex]< 1[/tex]

When common ratio is less than 1, then such series is convergent.

Hence, (b) is true because it has a sum of 4

Read more about series at:

https://brainly.com/question/10813422

Answer:

Null hypothesis = H0 : μ = 60

Alternative hypothesis = H1 : μ < 60

Step-by-step explanation:

From the question given :

μ = 60 minutes

xbar = 44.27 minutes

s = 20.4 minutes

The alternative hypothesis is the claim ; which is to hypothesize that the average studying time is 44.27 (which is less than the population average studying time)

The null hypothesis is the initial truth and it is the opposite of the alternative hypothesis.

The hypothesis are :

H0 : μ = 60

H1 : μ < 60

Answer:

Number 2. Any circle can be mapped onto another circle by dilation then translation is FALSE

Step-by-step explanation:

Answer:

(x + 8)² + y² = 6.25

Step-by-step explanation:

The equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k) are the coordinates of the centre and r is the radius

Here (h, k ) = (- 8, 0 ) and r = 5 ÷ 2 = 2.5 , then

(x - (- 8))² + (y - 0)² = 2.5² , that is

(x + 8)² + y² = 6.25

Answer:

8

Step-by-step explanation:

you use distance formula

Answer:

I can't answer this sorry dude and next time show us the picture so that we can understand

Answer:

==> C. , = 12x + 16x and 4(3x + 4x)

hope it helps

Answer:5 ft

Step-by-step explanation: ( 36 x 36 ) + ( 48 x 48 ) = 3600 inches

Square root of 3600 is 60

Convert inches to feet: 60 / 12 = 5

Answer:

1/3

Step-by-step explanation:

Look in the figure and circle all double rolls and all sums that equal 10.

See pic below. Then count them. There are 12.

12/36 = 1/3

Answer:

What do you mean by that?

Answer:

46% is the percent of the bags of baby carrots that have between 90 and 100 carrots

Step-by-step explanation:

The baby carrot is normally distributed.  

z = (x - µ)/σ

x is equal to number of baby carrots  

µ = mean

σ = standard deviation

Substituting the given values, we get -

90 ≤ x ≤ 100

z = (90 - 94)/8.2 = - 0.49

 For z value of -0.49, the probability is 0.31

For x = 100

z = (100 - 94)/8.2 = 0.73

For z value of 0.73, the probability is 0.77

P(90 ≤ x ≤ 100) = 0.77 - 0.31 = 0.46

The percent of the bags of baby carrots having carrots between 90 and 100 carrots is  0.46 × 100 = 46%

Answer: 10%

Step-by-step explanation: The percentage of 50-5 is 10%

Answer:

...

Step-by-step explanation:

0.1d - 4d -5

Answer:

-3.9d-5

I believe this is the answer! Hope this helps!

Answer:

,, yes the confidence interval only contains positive values

Answer:

Yes, the confidence interval only contains positive values.

Step-by-step explanation:

A 98% confidence interval for the mean difference (after – before) in score is 137.04 points to 248.96 points.

Based on the confidence interval if we go though the table we will find that each student show increase in confidence level .

As, At least the confidence level improved because it contains positive values only if we subtract previous value with the new values.

Therefore ,Yes, the confidence interval only contains positive values.

Click here to know more about the confidence level.

https://brainly.com/question/15712887

#SPJ2

Answer:

Ehhh waht ??im 10 jears old!

Step-by-step explanation:

Hahah

Step-by-step explanation:

hope it helps.

Answer:

a) P(2) =3(2)=6

b) P(10)= 3(10)=30

c) P(s)= 3s

Step-by-step explanation:

P=3s/s =3