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Anika [276]
3 years ago
11

Please help i need a good grade??!

Mathematics
1 answer:
vitfil [10]3 years ago
8 0
The IQR is the upper quartile-lower quartile. The way to determine this is finding the median of your numbers which is 53. Then you take the numbers higher than 53 and find the median of those which is 63.5. 63.5 is the upper quartile. Then you take the bottom half under 53 and find the median of those. The median of this is 53.5 53.5 is the lower quartile. Then just subtract 63.5-53.5 and you will get 10 as the IQR.
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y=-x

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6 0
3 years ago
To construct an interval estimate for the difference between the means of two populations when the standard deviations of the tw
kobusy [5.1K]

Answer:

C. (n₁ + n₂ - 2) degrees of freedom

Step-by-step explanation:

The t-test for difference between two mean when variance are equal is:

t=\dfrac{\bar{x}_1-\bar{x}_2}{s\sqrt{\frac{1}{n_1}+\frac{1}{n_2}}}

where ,

\bar{x}_1 = Mean of Sample 1

\bar{x}_2 = Mean of Sample 2

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n_2 = size of Sample 2

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5 0
4 years ago
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Kisachek [45]

Answer:

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Step-by-step explanation:

And yes the Venn diagram is wrong because you forgot to subtract 9 from 15 and 16

This makes it

[ 3 ( 6 ( 9 ) 7 ) ]

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8 0
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PtichkaEL [24]

Answer:

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4 0
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