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Do the sales prices of houses in a given community vary systematically with their sizes (as measured in square feet)? Attempt to answer this question by estimating a simple regression model where the sales priceof the house is the dependednt variable and the size of the house is the explanatory variable.
The Martin Company is in the process of planning for new production facilities and developing a more efficient distribution system design. At present, it has one plant at St.Louis with a capacity of 30000 units.
Find the probability that there are enough seats for all the passengers who show up. How many passengers are expected to show up?
ABC Auto Insurance classifies drivers as good, medium, or poor risks. Drivers who apply to them for insurance fall into these three groups in the proportions: 30 percent, 50 percent, and 20 percent, respectively.
The trial failed to show significance. How many subjects would be required to detect the difference in proportions observed in the trial with 80% power?
Of the 38 numbers on a roulette wheel, 18 are red, 18 are black and 2 are green. If the wheel is balanced, the probability of the wheel landing on red is 0.474.
The number of degrees of freedom corresponding to between treatments is:
Within each of your current careers/ jobs, there are sets of data that can be analyzed. For example, a teacher can use a set of test scores, a dietician can analyze a set of patient weights and correlate them to incidences of diabetes, and a sales..
What method is best suited for such a survey? Draw the sample using the random number table and bring out the rationale of the procedure.
Conclude that the population average pulse rate is 71.8. Reject the hypothesis that the population average pulse rate is 70.
If the restaurant stocks 400 hamburgers and 150 chicken sandwiches for a given day, what is the probability that it will run out of hamburgers or chicken sandwiches (or both) that day? Assume that the demand for hamburgers and the demand for chick..
If they didn't launch new mixing plant another alternate can contribute twenty five million profit for the same period (i.e. estimated 6 years). Draw the complete decision tree and determine whether the product should be launched or not.
One of the statistics collected is the porportion of time employees forget to include a napkin in the bag. What is the probability that there is no napkin included for a given order?
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