Question: Using the attached data set for parking tickets fines, how do I solve for this? With the standard deviation still truly unknown test the following

Using the attached data set for parking tickets fines, how do I solve for this?

With the standard deviation still truly unknown test the following hypothesis on the population to a significance of 0.01.

The Population is equal to the mode

30
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60
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15
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150
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40
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60
60
30
150
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30
250
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30
50
15
40
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40
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40
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30
100
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100
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40
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30
30
60
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40
30
40
15
60
30
15
150
150
40
40
30
30
150
60
30
40
60
30
40
40
30

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