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liq [111]
3 years ago
12

Please help. you don’t have to give me a explanation. it’s fine. but please help.

Mathematics
1 answer:
LenaWriter [7]3 years ago
6 0

Answer:

Question 3 is- B. 8 ounces

Step-by-step explanation:

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Please help me, i have been on this problem for 45 minutes.
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Answer:

Step-by-step explanation:

The absolute difference is 77-(-8)=85. The only option that is equivalent is

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3 years ago
Becky’s square living room needs new carpet. She needs about 200 square feet of carpet to cover the floor. What are the approxim
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Area is length * width
Take the square root of 200 which is approximately 14.14
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The data represented by the graph is normally distributed and adheres to the 68-95-99.7 rule. the standard deviation of this dat
jenyasd209 [6]

Answer:

i)

the standard deviation of this data is 2.2

ii) 84%

Step-by-step explanation:

We have been informed that the data represented by the graph is normally distributed and adheres to the 68-95-99.7 rule. This implies that we shall be dealing with the applications of the empirical rule.

In a normal distribution, the mean is also the mode as well as the median of the distribution. This implies that the mean is at the center of the distribution. In our case, the mean is 4.8. The vertical lines represents data points that lie 1, 2 and 3 standard deviations away from the mean.

From the graph, both 11.4 and -1.8 lie 3 standard deviations away from the mean on either side. We can thus use the following equation to solve for the unknown standard deviation;

mean + 3(sigma) = 11.4

where sigma is the standard deviation.

our mean is 4.8, therefore;

4.8 + 3(sigma) = 11.4

3(sigma) = 6.6

sigma = 2.2

ii)

In order to determine the percentage of the population that will fall below the mark of 7, we shall first determine how many standard deviations away from the mean the value 7 lies.

To do this, we can use the following equation;

4.8 + n(2.2) = 7

2.2n = 2.2

n = 1

Therefore, the data point 7 lies one standard deviation away from the mean to the right.

The percentage of the population that will fall below one standard deviation away from the mean is;

68 + 13.5 + 2.35 = 83.85%

Using the empirical rule

8 0
3 years ago
Which person(s) solved each of the equation correctly?
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Kim joe and Ron Harry
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I didn't know what to do here​
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Answer:

B

Step-by-step explanation:

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