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Llana [10]
3 years ago
11

310=-6.2f solve for f

Mathematics
1 answer:
Naddik [55]3 years ago
6 0
Divide both sides by -6.2:
-50 = f
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A statistics practitioner determined that the mean and standard deviation of a data set were 120 and 30, is respectively. What c
BartSMP [9]

Answer:

a) 68% of the observations lie between 90 and 150.

b) 95% of the observations lie between 60 and 180.

c) 99.7% of the observations lie between 30 and 210.

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

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.

In this problem, we have that:

Standard deviation = 120

Mean = 30

a. 90 and 150

This is within 1 standard deviation of the mean.

By the Empirical Rule, 68% of the observations lie between 90 and 150.

b. 60 and 180

This is within 2 standard deviations of the mean.

By the Empirical Rule, 95% of the observations lie between 60 and 180.

c. 30 and 210

This is within 3 standard deviations of the mean.

By the Empirical Rule, 99.7% of the observations lie between 30 and 210.

4 0
3 years ago
-5 /6 + ? =a negative number
lubasha [3.4K]

Answer:

-11

Step-by-step explanation:

-5 minus 6 equals -11. Look up on Google

8 0
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Rewrite as a simplistic fraction.<br> _<br> 0.7=?
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Answer: 7/10

Step-by-step explanation:

0.7 = 7/10

i think this is what you are asking

if not, I am so sorry :(

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the width of a laptop is 11.25 inches. the width is 0.75 times the length. what is the length of the laptop
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\bf \stackrel{width}{11.25}=0.75\stackrel{length}{L}\implies \cfrac{11.25}{0.75}=L\implies 15=L

8 0
3 years ago
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