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yuradex [85]
2 years ago
7

93 is 50% of what number?

Mathematics
1 answer:
yKpoI14uk [10]2 years ago
6 0

Answer: the answer is 186

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In order to estimate the average electric usage per month, a sample of 81 houses was selected and the electric usage was determi
lana [24]

Answer:

Confidence interval:  (1760,1956)

Step-by-step explanation:

We are given the following information in the question:

Sample size, n = 81

Sample mean =

\bar{x} = 1858 \text{ kWh}

Population standard deviation =

\sigma = 450 \text{ kilowatt-hours}

Confidence Level = 95%

Significance level = 5% = 0.05

Confidence interval:

\bar{x} \pm z_{critical}\displaystyle\frac{\sigma}{\sqrt{n}}

Putting the values, we get,

z_{critical}\text{ at}~\alpha_{0.05} = \pm 1.96

1858 \pm 1.96(\displaystyle\frac{450}{\sqrt{81}} ) = 1858 \pm 98 = (1760,1956)

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3 years ago
Harley has 5 quarts of orange juice to fill some empty glasses. She fills each glass with 14
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Answer:

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Step-by-step explanation:

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*<br> The value of x is:<br> a) 4.2<br> b) 14<br> c) 18<br> d) 313<br> 4<br> 12
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3 years ago
Find the measure of angle x in the figure below: to 55° 55° O 65 0709 0110°​
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110 is the answers for the question

Step-by-step explanation:

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Yes they are right. 2+784
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