It Is Known That the Variance of a Population Equals

question 47

Essay

It is known that the variance of a population equals 1296. A random sample of 144 observations is going to be taken from the population.
a.With a 0.95 probability, what statement can be made about the size of the margin of error?
b.With a 0.95 probability, how large of a sample would have to be taken to provide a margin of error of 6 or less?

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Definitions:

Exception

An event, typically an error or unexpected result, that disrupts the normal flow of a program's execution, often leading to the invocation of a catch block if handled properly.

Exception Class

A type of class in object-oriented programming that is used to handle or represent errors and other exceptional events that occur during program execution.

Inheritance

A fundamental concept in object-oriented programming, allowing a class (subclass) to inherit properties and methods from another class (superclass), promoting reusability.

Checked Exceptions

In Java, exceptions that are checked at compile time, requiring explicit handling either with a try-catch block or by declaring the exception with the throws keyword.