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REY [17]
2 years ago
14

Refer to the variable on the number of miles driven. the mean is 830.11 and the standard deviation is 42.19 miles. estimate the

number of buses traveling more than 900 miles. compare that number with the actual value.
Mathematics
1 answer:
Alex787 [66]2 years ago
8 0
The proportion of buses traveling more than 900 miles would be 0.0485; multiply this by the total number of buses and you will have your answer.

We find the z-score associated with 900 miles:

z = (X - μ)/σ = (900-830.11)/42.19 = 1.66

Using a z-table (http://www.z-table.com) we see that the area under the curve to the left of this, less than this, is 0.9515.  This means that the area under the curve to the right of this, greater than this, would be 1-0.9515 = 0.0485.
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Svetlanka [38]

Answer:

D is the correct answer

Step-by-step explanation:

Given:

Unit base price: $435

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First, determine the actual price of the unit by adding the sales tax to the base price of the unit:

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So, the total amount paid by Brian should be higher than the actual price since he used his credit card. Use the formula from economics:

F = P (1+i)^n

F = $507.96

Therefore, the total amount paid by Brian is $507.96.

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3 0
2 years ago
What is the area of a trapezoid that has base lengths of 17 inches and 25 inches and a height of 14 inches?
gulaghasi [49]

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294

Step-by-step explanation:

4 0
3 years ago
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allsm [11]

Answer: 25

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7 0
2 years ago
PLEASE CAN SOMEONE ANSWER THIS, THANKS
Sloan [31]

Answer:

$83 million

Step-by-step explanation:

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x = 24.1 • 100/29

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Hope this helps :)

8 0
3 years ago
2x+7=20 can someone please help with this
salantis [7]

Answer:

6.5

Step-by-step explanation:

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3 0
3 years ago
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