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Suppose that a data warehouse consists of the three dimensions time, customer, and cell phone plan, and the two measures number of calls and cell phone bill
a) Draw a schema diagram for the above data warehouse using the star schema.
b) Starting with the base cuboid [month, customer, plan], what specific OLAP operations should be performed in order to
i. Find the total no of calls made by each customer in 2009.ii. Find the total no of calls made by all the customers in each plan every year.iii. Find the monthly bill for each customer
Approximately 65% of all marketing personnel are extroverts, whereas about 50% of all computer programmers are introverts.
Consider the following situation describing layoffs at a manufacturing plant of the Monsanto Company. Does there appear to be a case of age discrimination between those laid off and those non-laid off?
Probability of Winning the Lottery: Because the California Fantasy 5 lottery is won by selecting the correct five numbers
This sample for the proportion of the population that would favor a recount. What is the Point Estimate for the proportion of the population that would favor a recount?
What is the probability that the team wins tonight and that there will be a large crowd at tomorrow's game?
Each,day Monday through Saturday, a baker bakes three large chocolate cakes and those not sold on the same day are given away to a food bank.
A researcher claims that the average age of people who buy lottery tickets is 64. A sample of 30 is selected and their ages are recorded as shown below.
What does the intercept mean in this context? What is the estimated percent decline in visual field per year?
How should he go about taking samples to gather data for testing the hypotheses?
Roger has read a report that the weights of adult mail Siberian tigers have a distribution which is approximately normal with mean μ = 390 lb and σ = 65 lb.
The p-value of the test is closest to:
For a sample of 120 students selected at random, what is the mean and variance of the number of students who watch this game?
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