Conventional Home Smoke Alarms Have Too Often Failed to Awaken

question 8

Essay

Conventional home smoke alarms have too often failed to awaken sleeping children--they are remarkably resistant to being awakened by sound, even in the daytime! Researchers are studying the possibility that a personalized "voice" smoke alarm would be more effective than mere sound. The idea is that a recording of the mother's voice calling the child's name may be an improvement over existing systems.
a)The researchers would like to estimate p to within 0.05 with 95% confidence. Past experience has shown that conventional alarms are effective about 0.58 of the time. If this is accepted as a reasonable initial estimate of p, what sample size should they use for their study?
b)Suppose the researchers felt that the original study, done with children of parents working in a single hospital, was different enough so that their results (p = 0.58) should not be relied upon. In a few sentences, explain how your procedure for choosing a samples size would differ from your solution in part (a). (Do NOT recalculate a new estimate of the necessary sample size!)

Analyze the outcome of specific chemical reactions given the reactants and conditions.

Predict the product of reactions involving epoxides with various reagents.

Understand the mechanisms of reactions involving organic compounds.

Identify the reagents required for specific organic transformations.

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Definitions:

Income Level

The amount of monetary or material wealth that an individual, family, or group receives, usually quantified on an annual basis.

Chocolate-Covered Peanuts

Peanuts that have been coated in a layer of chocolate, serving as a sweet and crunchy snack.

Preference

An individual's choice or inclination towards a specific option among a set of alternatives based on tastes, utility, or desirability.

Coconuts

Tropical fruit known for its water and flesh, often used as food and in various products, representing a good in economics.