Solutions Statistics

The city of Daytona Beach was concerned that a new ordinance which had raised the beach driving fee

Question: The city of Daytona Beach was concerned that a new ordinance which had raised the beach driving fee might have a negative impact on tourism. The city has engaged you to investigate this problem. You gathered data from 20 different days (10 before and 10 after) reflecting the number of vehicles on the beach before and after the ordinance, taking care to control for weather conditions and other variables as much as possible.

Paired Samples Statistics

		Mean	N	Std. Deviation	Std. Error Mean
Pair 1	Before	226.4000	10	77.15669	24.39909
	After	204.5000	10	113.35122	35.84480

Paired Samples Correlations

		N	Correlation	Sig.
Pair 1	Before & After	10	-.022	.951

Paired Samples Test

		Paired Differences					t	df	Sig. (2-tailed)
		Mean	Std. Deviation	Std. Error Mean	95% Confidence Interval of the Difference		Mean	Std. Deviation		Std. Error Mean
		Lower	Upper	Lower	Upper	Lower	Upper	Lower		Upper
Pair 1	Before - After	21.90000	138.53876	43.80980	-77.20466	121.00466	.500	9	.629

Data

Day	Vehicles on the beach before the new ordinance	Day	Vehicles on the beach after the new ordinance
8-1-03	221.00	8-1-04	245.00
8-2-03	222.00	8-2-04	222.00
8-3-03	343.00	8-3-04	333.00
8-4-03	234.00	8-4-04	111.00
8-5-03	112.00	8-5-04	444.00
8-6-03	221.00	8-6-04	111.00
8-7-03	222.00	8-7-04	111.00
8-8-03	343.00	8-8-04	222.00
8-9-03	234.00	8-9-04	123.00
8-10-03	112.00	8-10-04	123.00