For each of the following situations, discuss the nature of the population of in
ID: 3240686 • Letter: F
Question
For each of the following situations, discuss the nature of the population of interest, the variable of interest, and the parameter of interest. a. A city engineer wants to estimate the average weekly water consumption for single-family dwelling units in the city. b. A medical scientist wants to estimate the average length of time until the recurrence of a certain disease. c. An electrical engineer wants to determine whether the average lifetime of transistors of a certain type is greater than 500 hours.Explanation / Answer
1.(a) Population: All the families in the city.
Variable: Weekly water consumption for single-family dwelling units
Parameter: Average weekly water consumption for single-family dwelling units.
(b) Population: Persons having that particular disease.
Variable: Time until recurrence of a certain disease.
Parameter: Average length of time until the recurrence of a certain disease.
(c) Population: All the transistors considered for experiment.
Variable: Lifetime of transistors.
Parameter: Average lifetime of transistors.
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