determine whether the number of young increases with each parity (time when young are produced).

Some species of tropical fish bear their young alive rather than lay eggs. An aquarium keeper…

Some species of tropical fish bear their young alive rather than lay eggs. An aquarium keeper wants to determine whether the number of young increases…

Some species of tropical fish bear their young alive rather than lay eggs. An aquarium keeper wants to determine whether the number of young increases with each parity (time when young are produced). The following data are available for study:

a. Find the slope of the sample regression line.
b. Compute the sample variance about the trend line.
c. What are the most logical null and alternative hypotheses about the slope of the regression line?
d. Why is a two-sided alternative inappropriate?
e. To perform the test:
i. What assumptions must be made about the distributions of x and y?
ii. If the assumptions are valid, what conclusion should be drawn?
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