Assume that the differences for the given data are normally distributed. Complete parts$($a$)$ through$($d$).$

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Part $1$

$($a$)$ Determine d Subscript i Baseline equals Upper X Subscript i Baseline minus Upper Y Subscript i for each pair of data.

Observation

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$2$

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$5$

$6$

$7$

d Subscript i

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