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4 years ago

5

Which step requires revision, and how should it be corrected?

1 answer:

Yuliya22 [10]4 years ago

3 0

The step that requires division is the checking step

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which residual plot shows that the line of best fit is a good model?

Romashka-Z-Leto [24]

Ideally, we want the dot plots to cluster (or to 'group') close enough with each other to draw a line best fit.

Plot 1: The plots are close enough to each other we can draw a line best fit, as shown in the picture below

Plot 2 and Plot 3: We draw the line best fit following the trend of most dot plots but there are outliers. Outliers are the dot plots that are far away from the cluster near the line-best-fit

3 0

3 years ago

Read 2 more answers

What number do the blocks represent? Write your answer as a decimal.

evablogger [386]

Answer:

3.303

Step-by-step explanation:

6 0

3 years ago

Help me with this I will give brainliest

BaLLatris [955]

Answer:

see explanation

Step-by-step explanation:

both linear equations will have the form

y = mx + c ( m is the slope and c the y- intercept )

Chef Mate

c(n) = mn + c

calculate m using the slope formula

m = $\frac{y_{2}-y_{1} }{x_{2}-x_{1} }$

with (x₁, y₁ ) = (2, 14) and (x₂, y₂ ) = (3, 18.5) ← 2 ordered pairs from the table

m = $\frac{18.5-14}{3-2}$ = $\frac{4.5}{1}$ = 4.5 , then

c(n) = 4.5n + c ( n represents ounces )

To find c substitute any ordered pair from the table into c(n)

using (4, 23 )

23 = 18 + c ⇒ c = 23 - 18 = 5

c(n) = 4.5n + 5 ← equation for Chef Mate

--------------------------------------------------------------------

Similarly for Grocery Gourmet

g(n) = mn + c

using (2, 23 ) and (3, 27 ) to find m

m = $\frac{27-23}{3-2}$ = $\frac{4}{1}$ = 4 , then

g(n) = 4n + c

using (4, 31 ) to find c

31 = 16 + c ⇒ c = 31 - 16 = 15

g(n) = 4n + 15 ← equation for Grocery Gourmet

------------------------------------------------------------------

Equate the 2 equations to find when cost is the same

4.5n + 5 = 4n + 15 ( subtract 4n from both sides )

0.5n + 5 = 15 ( subtract 5 from both sides )

0.5n = 10 ( divide both sides by 0.5 )

n = 20

Then when n = 20

c(n) = 4.5(20) + 5 = 90 + 5 = 95

g(n) = 4(20) + 15 = 80 + 15 = 95

Both Chef Mate and Grocery Gourmet charge $95 for 20 ounces of extract

8 0

3 years ago

A sample of n = 16 scores has a mean of M = 40 and a variance of s2 = 64. What is the estimated standard error for the sample me

vaieri [72.5K]

Answer:

$S.E = 2$

Step-by-step explanation:

Given

$Mean = 40$

$s^2 = 64$ ----- variance

$n = 16$ ------------ sample

Required

Determine the S.E

The estimated standard error (S.E) for the sample mean is calculated using the following formula:

$S.E = \frac{SD}{\sqrt n}$

Where

$SD = Standard\ Deviation$

$SD = \sqrt {s^2}$

$SD = \sqrt {64}$

$SD = 8$

So:

$S.E = \frac{SD}{\sqrt n}$

$S.E = \frac{8}{\sqrt{16}}$

$S.E = \frac{8}{4}$

$S.E = 2$

Hence: the estimated standard error for the sample mean is 2

4 0

3 years ago

Please answer fast !!!

Rina8888 [55]

The right answer is B

4 0

3 years ago