TABLE 10-11 The Dean of a College Is Interested in the Proportion

question 80

Multiple Choice

TABLE 10-11
The dean of a college is interested in the proportion of graduates from his college who have a job offer on graduation day. He is particularly interested in seeing if there is a difference in this proportion for accounting and economics majors. In a random sample of 100 of each type of major at graduation, he found that 65 accounting majors and 52 economics majors had job offers. If the accounting majors are designated as "Group 1" and the economics majors are designated as "Group 2," perform the appropriate hypothesis test using a level of significance of 0.05.
-Referring to Table 10-11, the hypotheses the dean should use are

• A) H₀: π₁ - π₂ = 0 versus H₁: π₁ - π₂ ≠ 0.
• B) H₀: π₁ - π₂ ≠ 0 versus H₁: π₁ - π₂ = 0.
• C) H₀: π₁ - π₂ ≤ 0 versus H₁: π₁ - π₂ > 0.
• D) H₀: π₁ - π₂ ≥ 0 versus H₁: π₁ - π₂ < 0.

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Definitions:

Neuromuscular Junction

Specialized synapse between a motor neuron and a muscle fiber.

Presynaptic Terminal

The end of a neuron where neurotransmitters are stored before being released across the synapse to another neuron.

Synaptic Cleft

The narrow gap between the terminal end of a neuron and the neighboring neuron or muscle cell, across which neurotransmitters can send signals.

Postsynaptic Membrane

The region of a synapse that receives and responds to neurotransmitter from another neuron.