Question: An oceanographer believes that the median height of the waves at Ocean city is 2.8 ft. The wave heights (in feet) are measured for a random sample of 20 days. The data are shown here. Significance level=.05. Is there enough evidence to reject the oceanographer’s claim?

3.6 2.1 2.3 2.1 2.7

3.2 3.9 3.4 3.0 2.9

2.0 1.9 3.2 3.5 2.8

1.8 2.3 3.7 3.9 4.2