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The speed limit on Interstate 75 around Findlay, Ohio, is 65 mph. On a clear day with no construction, the mean speed of automobiles was measured at 63 mph with a standard deviation of 8 mph. If the speeds are normally distributed, what percentage of the automobiles are exceeding the speed limit? If the Highway Patrol decides to ticket only motorists exceeding 72 mph, what percentage of the motorists might they arrest?
Utilizing Excel data analysis calculate t distribution also deduce the result. Study of variance is used to investigate if there is a difference in the mean mileage of the three cars.
A stationery store wants to estimate the mean retail value of greeting cards that it has in its inventory. A random sample of 100 greeting cards indicates a mean value of $2.55 and a standard deviation of $0.44.
Use population distribution to determine expected juror frequencies. Test researcher's claim at a = 0.01.
To estimate the true proportion of students who abstain from alcohol at LBCC, you will need to take a simple random sample.
What is the probability that a particular driver had exactly two speeding violations?
Sample data are reported for 50 employees of small companies, 75 employees of medium companies, and 100 employees of large companies.
Identify three discrete variables that appear in your current or future career. How do those variables affect your workplace, your product, or your personnel? How would changes in those variables affect these things?
What is Peter's median grade point at graduation? What is the shape of the grade point distribution?
Provide one example in the accounting department that you can apply a contingency table to. Briefly explain how a contingency table can be useful.
In you determine the GPA of 10 members of the class and then calculate the average, will the number you get necessarily be the same as the average GPA for the whole class? On what factors would you expect the reliability of the estimate to depend..
A salesperson makes four calls per day. A sample of 100 days gives the following frequencies of sales volumes.
A restaurant monitors its customer's complaints, With information, which of the following is a Pareto chart of the data?
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