A Random Sample of 42 College Graduates Revealed That They

question 79

Multiple Choice

A random sample of 42 college graduates revealed that they worked an average of 5.5 years on the job before being promoted. The population standard deviation was 1.1 years. Using the 0.99 degree of confidence, what is the confidence interval for the population mean?

• A) 5.04 and 5.96
• B) 5.06 and 5.94
• C) 2.67 and 8.33
• D) 4.40 and 6.60

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Definitions:

Randomized Block Design

A statistical experiment design that aims to reduce variability among experimental units by grouping them into blocks before randomly assigning treatments.

Significant Interaction

Indicates a combined effect of two or more variables on a dependent variable that is greater than the sum of their individual effects.

Pay Plan-Shift Combination

A specific arrangement of compensation structures associated with different work shifts, designed to offer variable pay rates based on the timing of shifts.

SS(Total)

The total sum of squares in an analysis of variance (ANOVA), representing the total variation in the data.