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You are consulting for a large real estate firm. You have been asked to construct a model that can predict listing prices based on square footages for homes in the city you've been researching. You have data on square footages and listing prices for 100 homes.Which variable is the independent variable (x) and which is the dependent variable (y)?
In the past, the average age of employees of a large corporation has been 40 years. Recently, the company has been hiring older individuals. In order to determine whether there has been an increase in the average age of all the employees, a sample of..
The mean percentage of correctly recalled words was calculated for each type of list for each participant. From the information provided on the right, does any difference exist between the recall of high versus low frequency words?
The program office budgets $30,000 per program review at the contractor's site. Your concern for "end of year" spending drills is that you have budgeted enough for the reviews (i.e. you are only concerned if the actual costs are higher than the..
Question 1What is the probability of winning a low, even, red, black, odd, or high bet in the game of American roulette? What is the probability of winning a bet placed on any one particular number, e.g., 33? Notice that under American roulette, ther..
Prepare a report using the numerical methods of descriptive statistics presented in this module to learn how the variables contribute to the success of a motion picture.
What does p = .05 mean? What are some misconceptions about the meaning of p = .05? Why are they wrong? Should all research adhere to the p = .05 standard for significance? Why or why not?
An RCMP officer would like to estimate the true mean speed of all vehicles along a particular stretch of highway. She measures the speeds of a simple random sample of 40 vehicles and calculates a mean speed of 114.55 km/h. The population stan..
The file HotelPrices contains the prices in English pounds
If the mean exam score in a class of 30 students is an 80 out of 100 and the standard deviation on the exam is 15, assuming a normal distribution of grades on the exam, what percentage of students earned between 65 and 95? How alarmed should a studen..
Find a point estimate of and a 95 percent confidence interval for p, the proportion of all first-year defaults that are approved on the basis of falsified applications.
A.) Blood type AB is found in only 3% of the population. If 165 people are chosen at random, find the probability of the following. (Round your answers to four decimal places.)
Suppose several more years of data were available. Explain in about two sentences how the classical decomposition method could be modified to allow for seasonal effects changing over time.
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