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Mandarinka [93]
3 years ago
9

A cone-shaped tent has a diameter of 12 ft and a height of 6 ft.

Mathematics
1 answer:
mel-nik [20]3 years ago
6 0
Im thinking 226.08

v=1/3pie r^2 h 
v=1/3Pie (6) ^2 (6)
v=1/3 pie (36) (6)
v=1/3 pie (216)
v=72 pie
72 x 3.14=226.08
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Step-by-step explanation:

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Which of the following expressions are equivalent to 6 + (-4) - 5 ?
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Step-by-step explanation:

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2 years ago
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A different species of cockroach has weights that are approximately Normally distributed with a mean of 50 grams. After measurin
Ratling [72]

Answer:

The standard deviation of weight for this species of cockroaches is 4.62.

Step-by-step explanation:

Given : A different species of cockroach has weights that are approximately Normally distributed with a mean of 50 grams. After measuring the weights of many of these cockroaches, a lab assistant reports that 14% of the cockroaches weigh more than 55 grams.

To find : What is the approximate standard deviation of weight for this species of cockroaches?

Solution :

We have given,

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A lab assistant reports that 14% of the cockroaches weigh more than 55 grams.

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P(X\leq 55)=1-P(X>55)

P(X\leq 55)=1-0.14

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The z-score value of 0.86 using z-score table is z=1.08.

Applying z-score formula,

z=\frac{x-\mu}{\sigma}

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z=\frac{x-\mu}{\sigma}

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\sigma=\frac{5}{1.08}

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The standard deviation of weight for this species of cockroaches is 4.62.

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