Probability, variance, standard deviation
Not what you're looking for?
Fifty percent of Americans believed the country was in a recession, even though technically had not shown two straight quarters of negative growth (Business Week, July 30, 2001). For a sample of 20 Americans, make the following calculations.
a. Determine the probability that exactly 12 people believed the country was in a recession.
b. Determine the probability that no more than five people believed the country was in a recession.
c. How many people would you expect to say the country was in a recession.
d. Determine the variance and standard deviation of the number of people who believed the country was in a recession.
Purchase this Solution
Solution Summary
This shows how to determine probability, expected number, variance, and standard deviation regarding public opinion.
Solution Preview
Please see the attached file.
Fifty percent of Americans believed the country was in a recession, even though technically had not shown two straight quarters of negative growth (Business Week, July 30, 2001). For a sample of 20 Americans, make the following calculations.
a. Determine the probability that exactly 12 people believed the country was in a recession.
b. Determine the probability that no more than five people believed the country was in a recession.
c. How many people would you expect to say ...
Purchase this Solution
Free BrainMass Quizzes
Graphs and Functions
This quiz helps you easily identify a function and test your understanding of ranges, domains , function inverses and transformations.
Multiplying Complex Numbers
This is a short quiz to check your understanding of multiplication of complex numbers in rectangular form.
Solving quadratic inequalities
This quiz test you on how well you are familiar with solving quadratic inequalities.
Know Your Linear Equations
Each question is a choice-summary multiple choice question that will present you with a linear equation and then make 4 statements about that equation. You must determine which of the 4 statements are true (if any) in regards to the equation.
Geometry - Real Life Application Problems
Understanding of how geometry applies to in real-world contexts