What would be the margin of error for the population mean at 90% confidence

What would be the margin of error for the population mean at 90% confidence
level for the information in DATA below.

Wait Time (minutes)
1.0
5.3
1.1
0.2
0.2
1.8
0.4
1.5
3.5
0.7
3.0
2.5
0.4
1.3
5.7
2.1
0.8
7.6
1.3
1.2
1.3
3.7
4.2
2.1
0.3
3.3
5.8
0.6
2.0
7.5

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