Question

In: Statistics and Probability

Assume that the differences are normally distributed. Complete parts ​(a) through ​(d) below. Observation 1 2...

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

52.852.8

44.044.0

45.745.7

41.441.4

47.047.0

47.647.6

50.650.6

46.746.7

Upper Y Subscript iYi

53.253.2

45.745.7

50.550.5

45.545.5

48.648.6

47.947.9

51.351.3

46.646.6

​(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 . 4−.4

negative 1.7−1.7

negative 4.8−4.8

negative 4.1−4.1

negative 1.6−1.6

negative . 3−.3

negative . 7−.7

. 1.1

​(Type integers or​ decimals.)

​(b) Compute

d overbard

and

s Subscript dsd.

d overbardequals=negative 1.688−1.688

​(Round to three decimal places as​ needed.)

s Subscript dsdequals=1.8231.823

​(Round to three decimal places as​ needed.)

i was wondering how to calculate the Sd for this problem on paper and the steps for it on statcrunch, thanks

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