Two Independent Samples of Sizes 50 and 50 Are Randomly

question 53

Multiple Choice

Two independent samples of sizes 50 and 50 are randomly selected from two populations to test the difference between the population means, .The sampling distribution of the sample mean difference is:

• A)normally distributed
• B)approximately normal
• C)t - distributed with 98 degrees of freedom
• D)chi-squared distributed with 99 degrees of freedom

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Definitions:

Division

A mathematical operation involving the process of calculating how many times one number is contained within another.

Multiplication

A mathematical operation that calculates the total of repeatedly adding a number to itself a specified number of times, symbolized by the sign ×.

Evaluate

To assess or examine something thoroughly in order to determine its value or worth.

Fraction

A numerical quantity that is not a whole number, represented by two numbers divided by a line, indicating parts of a whole.