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If A and B are independent events which rule do we use?
A. P(A or B) = P(A) + P(B)
B. P(A and B) = P(A) . P(B)
Keep your eyes and ears open as you read or listen to the news this week. Find/discover an example of statistics in the news to discuss the following statement that represents one of the objectives of statistics analysis: "Statistics helps us make de..
Computer network manager wants to test the reliability of some new and expensive fiber-optic cables that the computer department just received. The department received 4 boxes, each containing 30 cables. The manager selects one cable at random from e..
Descriptive statistics and inferential statistics
Rosenberg Land Development (RLD) is a developer of condominium properties in the Southwest United States. RLD has recently acquired a 40.625 acre site outside of Phoenix, Arizona. Zoning restrictions allow at most 8 units per acre. Three types ..
part-1- first reset the lower limit to zero and the upper limit to 1000 and then click update.- now put 6 points
The actual amount of icing sugar that a filling machine puts into "180 gram" jars is well modeled as a normally distributed random variable with σ = 1.88 gram. If it is desired that only 1.2% (i.e. 0.012) of these jars are to contain less than 180.00..
Plot each of the predictors against the response. Plot the predictors against each other. The purpose here is to get a graphical idea of the relationships in the data.
A customer service center keeps track of the number of complaints received each day about one of their new products. The number of complaints received over the last 11 day period are 19, 18, 22, 21, 17, 18, 22, 19, 16, 23, and 25. The IQR for this sa..
The mean gas mileage for a hybrid car is 56 miles per gallon. Suppose that the gasoline mileage is approximately normally distributed with a standard deviation of 3.2 miles per gallon. A. What is the probability that a randomly selected hybrid gets m..
Use a table of areas for the standard normal curve to find the required z-score. Find the z-score for having area 0.45 to its right under the standard normal curve, that is, find z0.45. 0.3264 -0.13 0.6736 0.13
M&M's weigh 0.86 grams on average with SD = 0.04 grams, so the coefficient of variation is 0.04/0.86 0.047. Suppose that we decide to label packages by count rather than weight. The system adds candy to a package until the weight of the package excee..
Create a correlation table for the variables in our data set. Reviewing the data levels from week 1, what variables can be used in a Pearson's Correlation table (which is what Excel produces)
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