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stiks02 [169]
3 years ago
11

A sample of 100 roller coaters examines the relationship between top speed (response) and max drop (explanatory). Based off of t

he fitted vs residual plot below, select all the assumption have been violated.
The Equal Variance Assumption

There aren’t any outliers.

Both variables are quantitative

The relationship is linear
Mathematics
1 answer:
vekshin13 years ago
6 0

Answer:

From the plot it is clear that assumption 1 and 2 are violated. That is, the assumption of equal variance ( homoscedasticity) and there aren't any outliers.

Step-by-step explanation:

Both variables are quantitative  and The relationship is linear have not been violated.

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A car travels 117 miles in 2 and 1/4 hours how fast does the car travel in an hour
OverLord2011 [107]

Answer:

52 miles per hour

Step-by-step explanation:

The speed of the car can be found by dividing the distance by the time. THe distance is 117 miles and the time is 2 1/4 hours or 2.25 hours.

s=\frac{d}{t} \\s=\frac{117}{2.25} \\s= 52

8 0
3 years ago
Mason and Nora decided to swim across the river. Mason began swimming 7.7 seconds earlier than Nora. Mason swam at a speed of 5
user100 [1]
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3 years ago
Work out the area of Triangle ABC
Tema [17]

The main idea is using the Pythagorean formula to find the length of line segment DB.

Alr so you use the formula A^2 + B^2 = C^2

C^2 is already given and is 2\sqrt{5}

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So using algebraic rules you'll get B as:

\sqrt{2}

Now using the formula: \frac{1}{2} b * h, you can find the area of tri ABD and CBD which would be 3 and 1 so add them up and you get 4!

5 0
3 years ago
How much pure acid should be mixed with 6 gallons of a 20% acid solution in order to get a 40% acid solution
Misha Larkins [42]

Let A be the amount of 100% acid.

100A+20*(6)=40*(A+6)

100A+120=40A+240

60A=120

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3 0
3 years ago
There are 16 circles and 12 squares. What is the simplest ratio of squares to total shapes?
Hatshy [7]

Answer:

3/2

Step-by-step explanation:

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and divide both side by 4 for simplest form

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7 0
1 year ago
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