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3 years ago

Mr. Wilcox would really like his laptimes to be consistently between 1.75 and 1.85 minutes.

Mathematics

1 answer:

zloy xaker [14]3 years ago

3 0

Answer:

Use normalcdf ( 1.75, 1.85, 1.84, 0.07 )

Doc and Marty should have laptimes between 1.75 and 1.85 approximately 45.75% of the time.

Step-by-step explanation:

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How much is a 12cm pencil than a 1mm pen

insens350 [35]

2 mm longer hope helps

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3 years ago

Does the residual plot show that the line of best fit is

Iteru [2.4K]

Answer:

$e_1 = 3.5-4.06= -0.56$

$e_2 = 2.3-2.09= 0.21$

$e_3 = 1.1-0.12= 0.98$

$e_4 = -2.2-(-1.85)= -0.35$

$e_5 = -4.1-(-3.82)= -0.28$

The plot is on the figure attached. And we can see that the residuals shows a curved pattern so then the best conclusion for this case would be:

Yes, the points are in a curved pattern.

Step-by-step explanation:

The correct formula for the residuals is given by:

$e_i =y_i -\hat y_i$

Who represent the observed value minus the predicted. We can find the individual residuals and we got:

$e_1 = 3.5-4.06= -0.56$

$e_2 = 2.3-2.09= 0.21$

$e_3 = 1.1-0.12= 0.98$

$e_4 = -2.2-(-1.85)= -0.35$

$e_5 = -4.1-(-3.82)= -0.28$

The plot is on the figure attached. And we can see that the residuals shows a curved pattern so then the best conclusion for this case would be:

Yes, the points are in a curved pattern.

4 0

3 years ago

If 3 + 0.7 is equal to 0.7 plus a number, what do you know about the number?

Delicious77 [7]

Answer:

I'm not sure of the answer choices but your answer would be 3.

Step-by-step explanation:

We know that 3 + 0.7 = 3.7, you can take this information and reverse it. 3.7 - 0.7 = 3.

5 0

3 years ago

15% a football originally priced at $18.00

lesantik [10]

Answer:

2.7

Step-by-step explanation:

15% of 18.00 is 2.7

7 0

3 years ago

Rhea is writing a paper, and she notices that she can write 1.25 pages every 2 hours.

Ymorist [56]

Answer:

Rhea's estimation is unreasonable.

Step-by-step explanation:

Identify what you know:

1) Rhea calculates that she can write 1.25 pages every 2 hours

2) Rhea is calculating how long it would take her to write 6 pages.

Using Rhea's initial calculation, we can figure out roughly, how long it would take her to finish 6 pages.

First we need to divide 6 by 1.25, to figure out how many "2 hour" periods it would take Rhea.

6/1.25 = 4.8

4.8 x 2 = 9.6

It would take Rhea roughly 9.6 hours to finish 6 pages, which is 3.6 hours more than her original estimation. Thus, her estimate is unreasonable.

7 0

3 years ago