Paired-samples t

DATA

sample_id	microwave	lowtemp
1	0.70866	0.70861
2	0.708762	0.708792
3	0.708725	0.708734
4	0.708668	0.708662
5	0.708675	0.70867
6	0.708702	0.708713
7	0.708647	0.708661
8	0.708677	0.708667
9	0.709145	0.709176
10	0.709017	0.709024
11	0.70882	0.708814
12	0.709402	0.709364
13	0.709374	0.709378
14	0.709508	0.709517
15	0.70907	0.709063
16	0.709061	0.709079
17	0.709096	0.709039
18	0.70872	0.7087

Dataset: wine_isotope.csv

Source: C. Durante, C. Baschieri, L. Bertacchini, et al (2015).

"An Analytical Approach to Sr Isotope Ratio Determination in Lambrusco

Wines for Geographical Traceability Purposes," Food Chemistry, Vol. 173,

pp. 557-563.

Description: Two methods of determining SR^87/Sr^86 isotopic ratios in

wine, used for identifying geographic location. Each method (microwave

and low temperature) were used on 18 sample wines. Paired t-test.

Variable names

sample_id

microwave

lowtemp

Paired Samples Test
	Paired Differences	t	df	Significance
Mean	Std. Deviation	Std. Error Mean	95% Confidence Interval of the Difference	One-Sided p	Two-Sided p
Lower	Upper
Pair 1	microwave - lowtemp	.000003667	.000024646	.000005809	-.000008589	.000015923	.631	17	.268	.536

Ho: 1= 2

Ha: 1 2

Then

t= 0.631

P= P (t<0.631) = sig/2

P=? is it higher than 0.05,?

Provide hypothesis interpretation.