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Let y = sales at a fast-food outlet (1000s of $), x1 = number of competing outlets within a 1-mile radius, x2= population within a 1-mile radius (1000s of people), and x3 be an indicator variable that equals 1 if the outlet has a drive-up window and 0 otherwise. Suppose that the true regression model is
a. What is the mean value of sales when the number of competing outlets is 2, there are 8000 people within a 1-mile radius, and the outlet has a drive-up window?
b. What is the mean value of sales for an outlet without a drive-up window that has three competing outlets and 5000 people within a 1-mile radius?
c. Interpret ß3.
Then, select a manufacturing or service process and the data to be measured for that process; for example, the dimensions of the product, or the transaction times. Discuss at least 5 potential special causes of variation in the data.
a 90 confidence interval for the difference between the means of two independent populations with unknown population
If we generate 2,000 sets of 20 two-digit numbers, how can the outcomes of this simulation be used to approximate the probability of obtaining at least 15 positive results in the 20 runnings of the screening test?
Calculate the exact percentage, within a randomly selected list, of neighbouring digits that would have the same value, and the percentage of neighbours whose value differs by 1 (and do NOT count 0 and 9 as differing by 1).
Potential jurors. On page 28-11 are descriptive statistics and a scatterplot for the reporting percents in 1985 and 1997 from Table 28.2. (a) Use the descriptive statistics to compute the least-squares regression line for predicting the reporting ..
Develop a Console Application that grades a multiple choice test with 10 questions taken by 8 students.
Past data reveals that the graduation rate was 72% for the medical school at a university. If 10 medical students are randomly selected for that school. Find the probability that only 4 of them will graduate.
To investigate the fluid mechanics of swimming, twenty swimmers each swam a specified distance in a water-filled pool and in a pool where the water was thickened with food grade guar gum to create a syrup-like consistency. Velocity, in meters per sec..
If the bid is accepted , the company will make $36000 minus the cost of the bid. What is the expected value in this situation?
the mean cost of a wedding is 28732. suppose the cost for a wedding is normally distributed with a standard deviation
The waiting times have a standard deviation of 5.7 minutes. Use a 0.025 significance level to test the claim that with a single line, waiting times vary less than with individual lines.
what are some real life questions i can apply biostatistics principles to confidence intervals probability descriptive
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