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A metropolitan school system consists of three school districts-norths, south, central. The north district contains 25% of all students, the south district contains 40%, and the central district contains 35%. A minimum-competency test was given to all students; 10% of the north district students failed, 15% of the south district students failed, and 5% of the central district students failed.
a) Develop a probability tree showing all marginal, conditional, and joint probabilities.
b) Develop a joint probability table.
c) What is the probability that a student selected at random failed the test?
The box plots below show the real estate values of single values of single family homes in two neighboring cities, in thousands of dollars.
Develop a linear regression model for these data and forecast carpet sales if 30 construction permits for new homes are filed.
Company A is hoping to expand its operations and a small group of investors is visiting next week. You are tasked with the duty of explaining how Company A uses this information from a linear programming model to optimize its shipping.
He randomly selects a sample of 10 items of the procduct from a large lot ready to be shipped. He (given that) the true proportion of perfect condition items is only 80% what is the probability that the lot will not be shipped?
The Scatter plot can more easily be generated using the Chart procedure.
At the .05 significance level, can we conclude that the mean waiting time is less than 3 minutes?
Assume your statistics professor reports test grades as z-scores, and you got a score of 2.20 on the midterm exam. Write down a sentence explaining what that means.
Choose any medical scientific study who applied a Bayer Theorem and write down the article information (title, author, location, and date) of the article
What is the probability that none are a commercial success?
The quality-control inspector of a production plant will reject a batch of syringes if two or more defective syringes are found in a random sample of eight syringes taken from the batch. Assume the batch contains 1% defective syringes.
Perform Repeated Measures ANOVA also calculate PRE. An educational study uses a simple pre-post design to assess the value of a computer tutor for solving inequalities.
Statistics is science of conducting studies to: Solve a system of equations.
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