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A law enforcement agent blieves that 88% of drivers stopped on weekenbd nights are given tickets. In a sample of 180 drivers, 144 were given tickets. Would this indicate that the actual proportion of stopped drivers given tickets is not equal to .88? Use a 1% significance level.
A survey of 600 non-fatal accidents showed 259 involved the use of a cell phone. Construct a 99% confidence interval for the proportion of fatal accidents that involved the use of a cell phone?
Set up a scatter diagram. Use the least-squares method to find the regression coefficients and State the regression equation.
A restaurant claims that its speed of service time is less than 18 minutes. A random selection of 36 service times was collected, and their mean was calculated to be 17.7 minutes.
A sample of 10 persons is used to measure the effectiveness of two massage techniques. The effectiveness of the techniques is measured by the number of days that pass by before the subjects feel the need for another massage session.
Using the basic informaion from above: If there are no additional customers waiting (or walking up to the counter) when a particular customer begins her transaction, what is the probability that no one will be waiting in line when her transaction ..
Construct a frequency distribution and construct a histogram for the following data and use seven intervals, starting with 30-39.
Determine probability of waiting less than 12 minutes between successive speeders. By using cumulative distribution function of X.
An analyst thinks that the economic conditions during the next year will either be Strong, Normal or Weak and she thinks that the Simpson Company's returns will have the following probability distribution.
Discuss the strengths and weaknesses of correlational and regression studies; discuss concepts such as positive and negative correlations, correlation coefficients, confounding, and causality.
the amount of each active ingredient in 1 pound of each chemical are given in the file P15_74.xlsx. It is necessary that at least 100 pounds of chemical 2 be used. Determine the cheapest way of producing today's batch of NasaMist
Use the study to estimate the risk of an air bag fatality on a child seated on the front passenger seat.
Profitability at a bank is declining as customers are shifting to other banks. As a researcher, identify the problem (root cause of the symptom) through a scientifically crafted research proposal.
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