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andrew11 [14]
3 years ago
14

At one point the average price of regular unleaded gasoline was $3.57 per gallon. Assume that the standard deviation price per g

allon is $0.05 per gallon and use Chebyshev's inequality to answer the following. (a) What percentage of gasoline stations had prices within 4 standard deviations of the mean? (b) What percentage of gasoline stations had prices within 2.5 standard deviations of the mean? What are the gasoline prices that are within 2.5 standard deviations of the mean? (c) What is the minimum percentage of gasoline stations that had prices between $3.47 and $3.67?
Mathematics
1 answer:
NNADVOKAT [17]3 years ago
7 0
I don’t know the answer for that I will try to work out this problem
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Pls can some help me
maxonik [38]

-4.75= z/2

Multiply both sides by 2

-4.75(2)= z/2(2)

Cross out 2 and 2, divide by 1 and becomes z

z=-9.5

Answer: z= -9.5

7 0
3 years ago
Read 2 more answers
Please help me, please and thank youuu! :D
katen-ka-za [31]

Answer:

f = - \frac{19}{7}

Step-by-step explanation:

Given f varies directly with m then the equation relating them is

f = km ← k is the constant of variation

To find k use the condition f = - 19 when m = 14

- 19 = 14k ( divide both sides by 14 )

- \frac{19}{14} = k

f = - \frac{19}{14} m ← equation of variation

When m = 2 , then

f = - \frac{19}{14} × 2 = - \frac{19}{7}

8 0
2 years ago
P(x) = x4 + 7x3 - 24x2 + 20x - 16
Rudiy27

Answer:

-39 + 20x

Step-by-step explanation:

4 + 7 x 3 - 24 x 2 + 20x - 16

4 + 21 - 48 + 20x - 16

-39+20x

3 0
3 years ago
Ayudaaaaaaaaaaa por favor
Mazyrski [523]

Answer:

ayuda te solo no eres tonto o si?

Step-by-step explanation:

5 0
2 years ago
What is the solution to the system: 9x+3y=24 2y+4x=8
egoroff_w [7]

Answer:

x = 4, y = -4

Step-by-step explanation:

9x + 3y = 24

3x + y = 8                       divide both sides by 3

y = 8 - 3x                        subtract 3x from both sides

2y + 4x = 8

2(8 - 3x) + 4x = 8             replace y with 8 - 3x

16 - 6x + 4x = 8                distributive property

-6x + 4x = 8 - 16               subtract 16 from both sides

-2x = -8                            divide both sides by -2

x = 4

y = 8 - 3x

y = 8 - 3(4)                        replace x with 4

y = 8 - 12

y = -4

8 0
2 years ago
Read 2 more answers
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