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3 years ago

9

9. The water level is 3 feet below your dock. The tide goes out, and the water level lowers 1 foot. A storm surge comes in, and

the water level rises 2 feet. Write an integer to indicate the new water level

1 answer:

AysviL [449]3 years ago

6 0

We know that that the water level is 3 feet below your deck. (-3)
When the tide goes out, the water level lowers 1 foot. (-1)
A storm surge comes in, the water level rises 2 feet. (+2)

New water level: -3-1+2= -4+2= -2
The new water level is 2 feet below the dock.

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Answer:

The condition are

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The check revealed that

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Step-by-step explanation:

From the question we are told that

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The standard deviation is $\sigma = 2.2 \ years$

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The Alternative hypothesis is $H_a : \mu < 5$

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Generally the test statistics is mathematically evaluated as

$t = \frac{\= x - \mu}{ \frac{\sigma }{\sqrt{n} } }$

substituting values

$t = \frac{ 4.6 - 5}{ \frac{2.2}{\sqrt{20} } }$

$t = -0.8131$

Looking at the value of t and $Z_{\alpha }$ we see that $t < Z_{\alpha }$ so we fail to reject the null hypothesis

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2 years ago

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Studentka2010 [4]

Answer: X = 5

Step-by-step explanation:

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Reptile [31]

Answer:

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Step-by-step explanation:

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3 years ago

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