3 years ago

How much wood could a woodpecker peck if a woodpecker could peck wood? (this is a legitimate question on my homework)

Mathematics

1 answer:

Nimfa-mama [501]3 years ago

8 0

A woodpecker can chuck wood

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The ages of trees in a forest are normally distributed with a mean of 25 years and a standard deviation of 4. Approximately what

harkovskaia [24]

Answer:

78.88%

Step-by-step explanation:

We have been given that

$\mu=25,\sigma=4,x_1=20,x_2=30$

The z-score formula is given by

$z-\text{score}=\frac{x-\mu}{\sigma}$

For $x_1=20$

$z_1=\frac{20-25}{4}\\\\z_1=-1.25$

For $x_2=30$

$z_2=\frac{30-25}{4}\\\\z_2=1.25$

Now, we find the corresponding probability from the standard z score table.

For the z score -1.25, we have the probability 0.1056

For the z score 1.25, we have the probability 0.8944

Therefore, the percent of the trees that are between 20 and 30 years old is given by

0.8944 - 0.1056

= 0.7888

=78.88%

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Step-by-step explanation:

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Find the GCF of 27x^2 and 45x^3y^2

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Step-by-step explanation:

27x² = 3*3*3*x*x

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Explain why a graphical display might be skewed. How do you ensure data isn’t skewed?

Leno4ka [110]

Sample Response: If the data is collected in a biased manner, the graph could be skewed. Also, if the number of observations is too small, the graph can be skewed. To ensure the data is not skewed, collect a large representative unbiased sample

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12n - 20 is the answer

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3 years ago

How much wood could a woodpecker peck if a woodpecker could peck wood? (this is a legitimate question on my homework)​

How much wood could a woodpecker peck if a woodpecker could peck wood? (this is a legitimate question on my homework)