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lora16 [44]
3 years ago
10

In old-growth forests of douglas fir, the spotted owl dines mainly on flying squirrels. If we left When the initial population i

s 30 owls and 45 squirrels, then the number of rows and squirrels will continue to increase. Eventually there will be about (round to the nearest whole number) how many owls for every 1000 squirrels
Mathematics
1 answer:
Delicious77 [7]3 years ago
5 0

Answer: There are 667 owls for every 1000 squirrels.

Step-by-step explanation:

Since we have given that

Number of owls = 30

Number of squirrels = 45

If the number of owls and squirrels will continue to increase.

If there are 1000 squirrels, then the number of owls would be

\dfrac{30}{45}=\dfrac{x}{1000}\\\\x=\dfrac{30\times 1000}{45}\\\\x=666.67\\\\x\approx 667

Hence, there are 667 owls for every 1000 squirrels.

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The advertised duration of the trip is 2 hours and 15 minutes. The company operating the ferry would like to increase its operat
vesna_86 [32]

The 2.88 minutes have to reduce the standard deviation to increase the efficiency.

According to the statement

we have given that the duration of the trip is 2 hours and 15 minutes. And we have to how much standard deviation be reduced to increase the operational efficiency.

So, For this purpose, we know that the

Let X be the time taken to reach the resort. Then it is  given that the

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μ  = 2*60 = 120 minutes.

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Let σ be the reduced standard deviation such that new distributions becomes N (μ , σ)

Then P ( x <135)

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P ( x <135) = 0.95

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P [ (x -120 / σ) < (135 -120 / σ)] = 0.95

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So, The 2.88 minutes have to reduce the standard deviation to increase the efficiency.

Learn more about Standard deviation here

brainly.com/question/475676

Disclaimer: This question was incomplete. Please find the full content below.

Question:

The time it takes for a ferry to reach a summer resort from the mainland is Normally distributed with mean 2 hours and standard deviation 12 minutes. The advertised duration of the trip is 2 hours and 15 minutes. The company operating the ferry would like to increase its operational efficiency by reducing the standard deviation so that they are on time 95% of the time. How much do they have to reduce the standard deviation

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