Calculating margin of error
Question 1. A population has a known standard deviation of 25. A simple random sample of 49 items is taken from the selected population. The sample mean (x-bar) is 300. What is the margin of error at the 95% confidence level?
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How many trucks would you expect to see at the weighing station, including those being inspected?
What is the correlation between the above variables and sales?
Regression analysis is a statistical procedure for developing a mathematical equation.
Problem: How do nonparametric statistical tests compare to parametric tests in terms of statistical power?
Identify and describe the purposes of the two types of statistical analysis.
Calculate the values of F, using formula for F statistics (Look at the Formula Sheet). Is F significant? Explain how you know.
What is the chance of getting eight or fewer tails on 10 flips of a coin?
Question 1: Determine the optimal number of angels for Ingrid to order. Question 2: Why isn't Ingrid concerned with the reorder point for angels?
Analyze the role probability or trend analysis might play in helping address the business problem.
What type of test statistic is this? Can we conclude that more than 65% of high school students in the United States use computers for educational purposes?
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