Test of Statistical Significance in SAS

[Daily1]

data dummy;
input time 2. mass :4.;
infile datalines;
datalines;
0	6.64
1	6.34
2	6.04
4	5.47
6	4.94
8	4.44
10	3.98
12	3.55
14	3.15
16	2.79
18	2.45
20	2.14
22	1.86
24	1.6
26	1.37
28	1.17
30	0.98
35	0.6
40	0.34
45	0.17
50	0.06
;

a)Write the equation of a straight-line model relating the value of the mass of the spill (y) and the
time (x).
b)Find a 95% confidence interval for the mean mass of all spills with an elapsed time of 15
minutes. Interpret the result
c)Find a 95% prediction interval for the mass of a single spill with an elapsed time of 15 minutes.
Interpret the result.

[PaigeMiller]

Show us what you have tried.

[Reeza]

Regression tutorial (code)

https://stats.idre.ucla.edu/sas/webbooks/reg/chapter1/regressionwith-saschapter-1-simple-and-multipl...

Regression tutorial (SAS Studio Task)

https://video.sas.com/detail/video/5537540651001/the-linear-regression-task-in-sas%C2%AE-studio?auto...

PROC REG documentation - check the example for fully worked examples including code and explanations

https://documentation.sas.com/?docsetId=statug&docsetTarget=statug_reg_syntax01.htm&docsetVersion=15...

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@Daily1 wrote:

data dummy;
input time 2. mass :4.;
infile datalines;
datalines;
0	6.64
1	6.34
2	6.04
4	5.47
6	4.94
8	4.44
10	3.98
12	3.55
14	3.15
16	2.79
18	2.45
20	2.14
22	1.86
24	1.6
26	1.37
28	1.17
30	0.98
35	0.6
40	0.34
45	0.17
50	0.06
;

a)Write the equation of a straight-line model relating the value of the mass of the spill (y) and the
time (x).
b)Find a 95% confidence interval for the mean mass of all spills with an elapsed time of 15
minutes. Interpret the result
c)Find a 95% prediction interval for the mass of a single spill with an elapsed time of 15 minutes.
Interpret the result.

---