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3 years ago

7

Kala is building a fence around her garden. For every 4 feet of fencing. the cost is 36$ . Complete the table below showing the

length of the fence and the cost.
Length of fencing: (4) (6) (7) (_) (10)
Cost: (36) ( _ ) (_) 81 (_)

1 answer:

ExtremeBDS [4]3 years ago

4 0

Answer:

Length of fencing: 4, 6, 7, 9, 10

Cost: 36, 54, 63, 81, 90

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Step-by-step explanation:

We are given the following information:

We treat trucks undergoing a brake inspection passin as a success.

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a) Conditions for binomial probability distribution

There are n independent trial.
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Then the number of trucks undergoing a brake inspection follows a binomial distribution, where

$P(X=x) = \binom{n}{x}.p^x.(1-p)^{n-x}$

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We have to evaluate:

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d) Mean and standard deviation

$\mu = np = 15(0.75) = 11.25\\\sigma = \sqrt{np(1-p)} = \sqrt{15(0.75)(1-0.75)} = 1.667$

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