Assume that the differences are normally distributed. Complete parts ​(a) through ​(d) below.   Observation 1 2 3 4 5 6 7 8   Upper X Subscript iXi 52.1 47.4 47.6 47.3 47.3 47.4 48.8 49.2 Upper Y Subscript iYi 53.9 48.1 49.7 51.2 48.5 49.8 52.1 48.4 ​(a) Determine d Subscript i Baseline equals Upper X Subscript i Baseline minus Upper Y Subscript idi=Xi−Yi for each pair of data.   Observation 1 2 3 4 5 6 7 8 di negative −1.8 negative −0.7 negative −2.1 negative −3.9 negative −1.2 negative −2.4 negative −3.3 0.8 ​(Type integers or​ decimals.) ​(b) Compute d overbard and s Subscript dsd.   d overbard=nothing ​(Round to three decimal places as​ needed.)

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Assume that the differences are normally distributed. Complete parts ​(a) through ​(d) below.
 
Observation
1
2
3
4
5
6
7
8
 
Upper X Subscript iXi
52.1
47.4
47.6
47.3
47.3
47.4
48.8
49.2
Upper Y Subscript iYi
53.9
48.1
49.7
51.2
48.5
49.8
52.1
48.4
​(a) Determine
d Subscript i Baseline equals Upper X Subscript i Baseline minus Upper Y Subscript idi=Xi−Yi
for each pair of data.
 
Observation
1
2
3
4
5
6
7
8
di
negative
−1.8
negative −0.7
negative −2.1
negative −3.9
negative −1.2
negative −2.4
negative −3.3
0.8
​(Type integers or​ decimals.)
​(b) Compute
d overbard
and
s Subscript dsd.
 
d overbard=nothing
​(Round to three decimal places as​ needed.)
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