Deepwater Horizon Cleanup Costs. The following table represents the amount of money disbursed by BP to a random sample of six Florida counties, for cleanup of the Deepwater Horizon oil spill, in millions of dollars.10 Use the following information for Exercises 47–49.
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| County | Cleanup costs ($ millions) |
|---|---|
| Broward | 0.85 |
| Escambia | 0.70 |
| Franklin | 0.50 |
| Pinellas | 1.15 |
| Santa Rosa | 0.50 |
| Walton | 1.35 |
deepwaterclean
47. The normality of the data was confirmed in the Section 8.1 exercises. Test, at level of significance , whether the population mean amount of cleanup money exceeds $500,000.
9.4.47
Step 1 We will reject if the .
Step 2
Step 3
Step 4 The is . Therefore we reject . There is evidence at level of significance that the population mean amount of cleanup money is greater than $500,000.