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Figure 21.1 The figure shows the real and apparent positions of a fish in water.
-We are looking at a fish from directly above (Fig. 21.1). If the fish looks to us to be 30 cm beneath the surface, where is its real position as measured from the surface? Indices of refraction are, for air n1 and water n2, n1 = 1 and n2= 1.33.
Standard Deviation
A statistical measure that quantifies the amount of dispersion or variation in a set of values.
Test Statistic
A calculated value from sample data used to make decisions about the validity of a hypothesis in hypothesis testing.
Advertising Campaigns
Organized series of promotional activities around a particular theme aimed at stimulating demand for a product or service.
Null Hypothesis
The hypothesis that there is no significant difference between specified populations, any observed difference being due to sampling or experimental error.
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