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ehidna [41]
4 years ago
15

Suppose that a customer is purchasing a car. He conducts an experiment in which he puts 10 gallons of gas in the car and drives

it until it runs out of gas.
He conducts this experiment 15 times on each car and records the number of miles driven.

Car1
232 243 219 208 242
268 284 174 285 251
163 307 281 307 289

Car2
243 205 244 217 258
257 203 286 245 253
275 250 259 281 265

a. Describe each data set, that is determine the shape, center, and spread

i. Sample mean for Car 1

ii. Sample mean for Car 2
Mathematics
1 answer:
True [87]4 years ago
6 0

Answer:

mean = 250.2

mean =  249.4

Step-by-step explanation:

given data

experiment =  15 times

solution

we get here mean that is express as

mean = \frac{\sum x }{n}      ............1

so mean for cart 1 is

mean =  \frac{232+ 268 + 163+ ....+ 289}{15}

mean = 250.2

and

mean for cart 2

mean =  \frac{243+ 257 + 257 + ....+ 265}{15}  

mean =  249.4

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Prove that the sum of 3 consecutive numbers is always a multiple of 3
Bad White [126]

Proof:

3 consecutive integers are x, x+1 , x+2.

Add these values.

x+x+1+x+2

3x+3

3×(x+1)

3(x+1) is the multiple of 3 for any integer value of x.

7 0
4 years ago
A school has 320 girls and 250 boys the probity that a girl is left handed 0.2 the probity that a boy is left handed is 0.1 esti
Elena L [17]

Probability helps us to know the chances of an event occurring. The estimated number of left-handed persons in the school is 89.

<h3>What is Probability?</h3>

Probability helps us to know the chances of an event occurring.

\rm Probability=\dfrac{Desired\ Outcomes}{Total\ Number\ of\ outcomes\ possible}

Given the number of girls is 320, the probability that a girl is left-handed is 0.2. Therefore, the number of girls who are left-handed is,

Number of left-handed girls = (320×0.2) = 64

Given the number of boys is 250, the probability that a boy is left-handed is 0.1. Therefore, the number of boys who are left-handed is,

Number of left-handed boys= (250×0.1) = 25

Hence, the estimated number of left-handed persons in the school is 89.

Learn more about Probability:

brainly.com/question/795909

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4 0
2 years ago
Mia buys 3 gallons of gas that cost d dollars per gallon.Bob buys g gallons of gas that cost 3 per gallon. Write an expression f
xxTIMURxx [149]
3(d) and 3 (g)
d represents the price. so you multiply 3 by however much the has cost.
g represents the gallons and 3 represents the cost and again you multiply
3 0
3 years ago
Read 2 more answers
PLEASE URGENT HELP.
topjm [15]
Linear: third graph from the left
Quadratic: fourth graph from the left
Exponential: first graph from the left
To find this out, look at the type of graft and then its factors. 
3 0
4 years ago
Choose the best selection for the
katrin2010 [14]

Answer:

B. Square

Step-by-step explanation:

Finding the side lengths :

<u>Side 1</u>

⇒ d₁ = √(-4 - 0)² + (8 - 8)²

⇒ d₁ = √16

⇒ d₁ = 4

=============================================================

<u>Side 2</u>

⇒ d₂ = √(-4 + 4)² + (8 - 4)²

⇒ d₂ = √16

⇒ d₂ = 4

===========================================================

<u>Side 3</u>

⇒ d₃ = √(-4 - 0)² + (4 - 4)²

⇒ d₃ = √16

⇒ d₃ = 4

============================================================

<u>Side 4</u>

⇒ d₄ = √(0 - 0)² + (8 - 4)²

⇒ d₄ = √16

⇒ d₄ = 4

As all sides of the figure are equal, and it creates 4 right angles, it is a square.

4 0
2 years ago
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