Instruction 10-12 A Corporation Randomly Selects 150 Salespeople and Finds That 66

question 19

Multiple Choice

Instruction 10-12
A corporation randomly selects 150 salespeople and finds that 66% who have never taken a self-improvement course would like such a course. The firm did a similar study 10 years ago in which 60% of a random sample of 160 salespeople wanted a self-improvement course. The groups are assumed to be independent random samples. Let π₁ and π₂ represent the true proportion of workers who would like to attend a self-improvement course in the recent study and the past study, respectively.
-Referring to Instruction 10-12,what is the estimated standard error of the difference between the two sample proportions?

• A) 0.500
• B) 0.629
• C) 0.055
• D) 0

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Definitions:

Equations

Mathematical statements that assert the equality of two expressions, typically including one or more variables.

Substitution

A method for solving systems of equations where one of the equations is solved for one variable in terms of others, and that expression is substituted into the other equation(s).

Equations

Mathematical statements that assert the equality of two expressions, typically involving variables.

Solutions

The values or sets of values that satisfy an equation, inequality, system of equations, or other mathematical conditions.