Q. Average daily temperature data was collected for the cities of Sapporo, Japan, and Vladivostok, Russia, for the period from 6 August 2020 to 20 August 2020. These cities are both at approximately 43 degrees north in latitude but on opposite sides of the Sea of Japan.

Consider both sets of temperature data.

	Sapporo	Vladivostok
1	26.637222	24.770319	1.866903
2	26.343054	23.590736	2.752318
3	24.320139	22.286982	2.033157
4	22.64639	22.691566	-0.045176
5	15.918053	21.478233	-5.56018
6	16.29014	18.741152	-2.451012
7	16.813887	18.636982	-1.823095
8	16.970554	18.414064	-1.44351
9	17.778889	19.134066	-1.355177
10	17.316805	19.574066	-2.257261
11	17.101389	19.8399	-2.738511
12	18.430971	20.429483	-1.998512
13	15.628471	20.847399	-5.218928
14	17.99514	21.303232	-3.308092
15	20.385555	19.77365	0.611905
Mean	19.3717773	20.7674553	-1.39567807
SD	3.78024314	1.90939952	2.46820326

1. is this paired or unpaired data?

2. Use a parametric test to determine whether there is any difference in the mean temperature between Sapporo and Vladivostok. State clearly the null and alternative hypotheses and show all steps in the hypothesis test. Do not use Excel.

3. Use a nonparametric test to determine whether there is any difference in the mean temperature between Sapporo and Vladivostok. State clearly the null and alternative hypotheses and show all steps in the hypothesis test.

4. Which of these two tests is most appropriate in this case? Give appropriate evidence