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A company's manufacturing process uses 500 gallons of water at a time. A "scrubbing" machine then removes most of a chemical pollutant before pumping the water into a nearby lake. To meet federal greg
What is the percentage of increase/decrease of sales from 2004 to 2007?Percent change = ?%
Use the average of 2001, 2002 and 2003 as the base and determine indexes for 2005 and for the preliminary 2006 data using 100 as the base value.
For full marks use the coded method and round your answer to 1 decimal place.Find the slope for the trend-line.What is the intercept of the trend-line.
A doctor wants to know if there is a relationship between a father’s weight and his first newborn son’s weight. Perform a hypothesis test at Alpha = .01, using table I
A researcher is asked to determine whether or not a productivity objective (in dollars) of better than $75,000 per employee is possible. A productivity test is done involving 20 employees. What conclu
Team Sports Inc. sells sporting goods to high schools and colleges via a nationally distributed catalogue. Management at Team Sports estimates it will sell 2000 Wilson Model A2000 catcher’s mitt
Analyze how the level of measurement and the distribution of the data influenced the type of graphical descriptions presented.
Because each roll has six possible even values (2, 4, 6, 8, 10, and 12) and only five possible odd values (3, 5, 7, 9, and 11), the dice should show even values more often than odd values. Do you agre
A die has half of the faces red and the other half black. The die is rolled 3 times. Let the random variable X represent the number of black outcomes out of three rolls. What is P(1) that is the proba
What are the main difference between the frequency distribution of continuous data and discrete data.2. How would you present a continuous data as though discrete?
A Business Week North American subscriber study collected data from a sample of 2861 subscribers. Fifty-nine percent of the respondents indicated an annual income of $75,000 or more, and 50% reported
Find the probability that a value randomly selected from this population will have a value between 90 and 130.
SCCoast, an Internet provider, developed the following frequency distribution on the age of Internet users. Find the mean, median, and the standard deviation.
If you concluded in part (a) above that the two variables are CI(1,1), estimate the long-run equilibrium relationship between PriCon and PerDisInc by the DOLS and FMOLS methods. Briefly comment on the
When I watch the weather on TV it makes me crazy that they will talk about the "average" or "normal" temperature. When they say "average" on TV weather to which of the "averages" discussed in the text
You are considering buying a new house in a new city. You want to know the average price of the houses in a new community to which you are considering moving
In 1978, the CPI for Canada was 43.6, but in 1988, the CPI was 84.8. What was the geometric mean annual increase for the period?
Use an appropriate graph to compare the distribution of systolic BP for 50-54 year olds with that for 60-64 year olds. Label the axes correctly, include unit of measure and provide an appropriate titl
Using the following information for McDonovan, Inc.'s stock, calculate their expected return and standard deviation.
The average salary of senior managers in the construction industry is $180,000 per year. Suppose we would like to take a sample of senior managers at a newly established company XYZ to see wheth
Find the implied volatility of the following European call. The call has four months until expiry and an exercise price of $100. The call is worth $6.51 and the underlying trades at $101.50. Assume th
Develop a multiple linear regression equation that describes the relationship between tenure and the other variables in the chart above. Use the Analysis Toolpak located in Excel to perform this multi
x1, x2, x3 are zero mean Gaussian random variables with STD=4. Let x1 and x2 be independent and x3= a*x1+b*x2. Find the constants “a” and “b” such that the correlation be
A bottling company uses a filling machine to fill plastic bottles with cola. The bottles are supposed to contain 300 milliliters (ml). In fact, the contents vary according to a normal distribution wit