A National Poll Reported That 58% of Those with Internet

question 11

Essay

A national poll reported that 58% of those with Internet access have made purchases online. To investigate whether this percentage applies to its own state, a legislator commissions a study. A random sample of 400 state residents who have Internet access is taken. Of those 400 respondents, 215 said that they have made purchases online. Does this sample provide sufficient evidence to conclude that the state differs from the nation with respect to making purchases online? Use the p-value to conduct the hypothesis test and use a .05 level of significance.

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Definitions:

Injection Injury

A type of injury caused by high-pressure injection of substances such as chemicals, water, or air into the body, often leading to serious tissue damage.

Oxyacetylene Torch

A tool used for cutting, welding, and brazing metals by burning a mixture of oxygen and acetylene gas, producing a very hot flame.

Neutral Flame

A specific flame condition in oxy-fuel welding where the oxygen and fuel gas are in perfect balance, producing a clean and efficient heat source.

Carburizing Flame

A type of flame used in welding and metalworking characterized by a high carbon content, used to harden steel by enhancing its surface carbon concentration.