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It is generally believed that electrical problems affect about 14% of new cars. An automobile mechanic conducts diagnostic tests on 128 new cars on the lot."
What is the standard deviation for the sample proportion? a.) 0.11 b.) 0.021 c.)0.031 d.) .021
"What is the probablily that in this group over 18% of the new cars will be found to have electrical problems?"
Using decision tree analysis, decide whether Jay must proceed with his law suit against manufacturer.
For the passengers in the SRS, what is the approximate probability that the mean length of time for them to get through security will be less than 18 minutes?
The length of time to do a complete full service oil change at Speedy-Lube is normally distributed with a mean of 15.8 minutes and a standard deviation of 2.2 minutes
Determine the expected market return on $ 20,000 if the expected return on asset is 20%, its beta is 1.5, and the risk free rate is 5 percent?
Describe the use of normal probability plot to evaluate whether a set of data is normally distributed?
A political scientist obtained recordings of election-night acceptance speeches of seven newly elected representatives to the US Congress.
A college would like to have an entering class of 1200 students. Because not all students who are offered admission accept, the college admits more than 1200 students.
At 0.01 significance level is it sensible to conclude that modification reduced number of traffic accidents?
What is the stock's value at it's highest on 15 days of the year? (Assume that there are 240 trading days in a year).
Construct a 95% confidence interval estimate for the proportion of all workers who did not use the Internet within limits. Explain your findings so that your non-quantitative partner will understand them.
If you draw one ball from the urn what is the probability that it is blue or white?
Using the above database, compute a t-test comparing males' and females' heights. You must determine which type of t-test to compute. Write a short interpretation of the results.
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