In 2007,13,000 Internet Users Were Surveyed and Asked About Their

question 111

Multiple Choice

In 2007,13,000 internet users were surveyed and asked about their willingness to pay fees for access to websites.Of these,2,938 were definitely not willing to pay such fees.The 95% confidence interval for the proportion definitely unwilling to pay fees would be _____.

• A)[0.286,0.302]
• B)[0.219,0.233]
• C)[0.220,0.232]
• D)[0.212,0.241]
• E)[0.214,0.245]

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Definitions:

Enzyme-linked Receptors

A class of cell surface receptors that initiate a cellular response upon binding a specific ligand, often leading to a series of enzymatic reactions inside the cell.

Ion Channel-linked Receptors

Proteins that span a cell membrane and open to allow ions such as Na+, K+, Ca2+, and Cl- to pass in response to the binding of a chemical messenger.

G Protein-linked Receptors

Proteins that transmit signals from outside the cell to the inside by binding with G proteins, initiating various cellular processes.

Second Messenger

Intracellular signaling molecules released by the cell in response to exposure to extracellular signaling molecules.