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Tamiku [17]
2 years ago
14

Last question of today 20pts/brainliest//thx

Mathematics
2 answers:
ziro4ka [17]2 years ago
7 0
Answer is 32 square feet
den301095 [7]2 years ago
6 0
The anwser is 32 square feet
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Select the correct answer.
tigry1 [53]

Answer:

We can be 95% certain that the sample mean will fall within $44.87 and $46.93

Step-by-step explanation:

Empirical Rule:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

Central Limit Theorem:

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

Population:

Mean $45.90, standard deviation $10.31.

Sample:

By the Central limit theorem, mean $45.90, standard deviation s = \frac{10.31}{\sqrt{400}} = \frac{10.31}{20} = 0.5155

Which interval can the branch manager be 95% certain that the sample mean will fall within?

By the Empirical Rule, within 2 standard deviations of the mean. So

45.90 - 2*0.5155 = $44.87

45.90 + 2*0.5155 = $46.93

We can be 95% certain that the sample mean will fall within $44.87 and $46.93

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2 years ago
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Please help me it’s due tomorrow morning :(!!
andreev551 [17]

Answer:

Using a variable to represent a pattern is helpful because you do not need to constantly rewrite the pattern.

Step-by-step explanation:

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3 years ago
X less than 42 is 15<br><br> Which equation represents this scenario?
Lelu [443]

Answer:

42 is 15

Step-by-step explanation:

42 is 15 because of x

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The difference in the x-coordinates of two points is 3, and the difference in the y-coordinates of the two points is 6. What is
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It Does Not Matter Where You Put The Line, As The Slope Stays The Same. So, We Can Say That One Point Is (3,0)
(3,0) and (6,6)
So, The Slope Is 2.
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In a number sentence, a symbol that points toward a lesser number or expression is called a
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Less that sigh if it it pointing to the left if it is to the right grater than
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