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lina2011 [118]
3 years ago
13

118.380 round to the nearest hundred

Mathematics
1 answer:
swat323 years ago
4 0
The hundreds column is the 3rd digit to the left of the decimal point, in this case it's the 1.

Look at the number 1 to the right of it. If its 5 or above, you round the number up, if it's below 5 you leave it the same.

In this case the number after the 1 is another 1, so you don't round it up.

118.380 to the nearest hundred is 100
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The confidence interval for mean of the "before-after" differences is \fbox{(-0.4037,1.8037)}

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Find the difference between the before pain and the after pain.

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Kindly refer to the Table for the difference of between the before and after pain.

Sum of difference = 5.6

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Formula for confidence interval = \left( \bar{X} \pm t_{n-1, \frac{\alpha}{2}\%} \frac{s}{\sqrt{n}} \right)

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confidence interval = \left( 0.7 \pm t_{7, \frac{5}{2}\%} \frac{1.3201}{\sqrt{8}} \right)

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The value of t_{7, \frac{5}{2}\%=2.365

Confidence interval = ( 0.7 \pm 2.365}\times \frac{1.3201}{\sqrt{8}}) \right)

Confidence interval = \left( 0.7 - 2.365}\times \0.4667,0.7 + 2.365}\times \0.4667) \right

Confidence interval = (0.7-1.1037,0.7+1.1037)

Confidence interval = \fbox{(-0.4037,1.8037)}

The 95\% confidence interval tells us about that 95\% chances of the true mean or population mean lies in the interval.

Yes, the hypnotism appear to be effective in reducing pain as confidence interval include includes the positive deviation from the mean.

Learn More:

1. Learn more about equation of circle brainly.com/question/1506955

2. Learn more about line segments brainly.com/question/909890  

Answer Details:

Grade: College Statistics

Subject: Mathematics

Chapter: Confidence Interval

Keywords:

Probability, Statistics, Speed dating, Females rating, Confidence interval, t-test, Level of significance , Normal distribution, Central Limit Theorem, t-table, Population mean, Sample mean, Standard deviation, Symmetric, Variance.

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