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TABLE 13-9 It Is Believed That, the Average Numbers of Hours Spent

question 188

Multiple Choice

TABLE 13-9
It is believed that, the average numbers of hours spent studying per day (HOURS) during undergraduate education should have a positive linear relationship with the starting salary (SALARY, measured in thousands of dollars per month) after graduation. Given below is the Excel output for predicting starting salary (Y) using number of hours spent studying per day (X) for a sample of 51 students. NOTE: Only partial output is shown.

Note: 2.051E - 05 = 2.051*10⁻⁰⁵ and 5.944E - 18 = 5.944*10⁻¹⁸.
-Referring to Table 13-9, the estimated change in mean salary (in thousands of dollars) as a result of spending an extra hour per day studying is

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Definitions:

Exploitation Competition

Intraspecific competition in which all the individuals in a population “share” the limited resource equally so that at high population densities none of them obtains an adequate amount. Also called scramble competition. Compare with interference competition.

Oscillate

To move or swing back and forth at a regular speed, or to vary between opposing beliefs, feelings, or theories.

Density-dependent Factor

A factor whose effects on the size or growth of the population vary with the population density, such as disease or food supply.

Population Size

The number of individuals belonging to a specific species that live in a designated area.