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3 years ago

9

Mike and Felix are collecting newspapers for a recycling project. Mike collected 14.66 pounds and Felix collected 11.5 pounds. T

ogether, how many pounds of newspapers did they collect? A. 25.71 pounds B. 26.16 pounds C. 25.16 pounds D. 26.1 pounds

1 answer:

NISA [10]3 years ago

6 0

Answer:

26.16

Step-by-step explanation:

14.66 + 11.5 = 26.16

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Normal Distribution. Cherry trees in a certain orchard have heights that are normally distributed with mu = 112 inches and sigma

Lubov Fominskaja [6]

Answer:

The probability that a randomly chosen tree is greater than 140 inches is 0.0228.

Step-by-step explanation:

Given : Cherry trees in a certain orchard have heights that are normally distributed with $\mu = 112$ inches and $\sigma = 14$ inches.

To find : What is the probability that a randomly chosen tree is greater than 140 inches?

Solution :

Mean - $\mu = 112$ inches

Standard deviation - $\sigma = 14$ inches

The z-score formula is given by, $Z=\frac{x-\mu}{\sigma}$

Now,

$P(X>140)=P(\frac{x-\mu}{\sigma}>\frac{140-\mu}{\sigma})$

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$P(X>140)=P(Z>2)$

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The Z-score value we get is from the Z-table,

$P(X>140)=1-0.9772$

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Therefore, the probability that a randomly chosen tree is greater than 140 inches is 0.0228.

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