An airplane's altitude in feet during its descent can be found using the equation y=-150x + 30,500. After new government regulat
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Answer:
There is 95% confidence that the true proportion of people who say that a car is a necessity lies in the interval (0.83, 0.89).
Step-by-step explanation:
A (1 - <em>α</em>)% confidence interval for population proportion is given by:
The sample size is, <em>n</em> = 1483.
The 95% confidence interval for the population proportion of people who say that a car is a necessity is,
<em>CI</em> = (0.83, 0.89)
A (1 - <em>α</em>)% confidence interval for a population parameter implies that there is (1 - <em>α</em>) probability that the true parameter value is contained in the interval.
Or, there is (1 - <em>α</em>)% confidence that the confidence interval consists of the true population parameter value.
The 95% confidence interval for the population proportion of people who say that a car is a necessity implies that the true proportion of people who say that a car is a necessity lies in the interval (0.83, 0.89) with a probability of 0.95.
Or, there is 95% confidence that the true proportion of people who say that a car is a necessity lies in the interval (0.83, 0.89).