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The distribution of the annual incomes of a group of middle management employees approximated a normal distribution with a mean of $39,570 and a standard deviation of $798. About 65 percent of the incomes lie between what two incomes?
Order pizza with this new crust again. Calculate a 98% confidence interval for the proportion of customers who would order the new thin crust pizza again.
1. in this exercise we will be building regression models for predicting house prices. we will be using data collected
The average score on the stat midterm was 75 points with a standard deviation of 5 points, and Gregor's z-score was -2. How many points did he score.
assume that you must conduct a new poll to determine the percentage of adults who believe that it is morally wrong to
The number of cell phone minutes used by high school seniors follows a normal distribution with a mean of 500 and a standard deviation of 50. What is the probability that a student uses fewer than 600 minutes?
For monthly volume of 300 tables, find out total cost, total revenue and profit.
Looking for a good original (yet cited) response to this definition. And if you can describe two common ones with an example for each that would be great.
Construct a frequency distribution that has 5 classes, and draw:
suppose that 97 of monarch butterflies migrate to mexico in winter. what is the smallest sample size required to ensure
In an attempt to justify this claim, the representative will poll a randomly selected sample of dish owners. The probability that none of the dish owners in the sample subscribes to at least one premium movie channel.
a global financial institution transfers a large data file every evening from offices around the world to its london
A sample of 350 lenses and found 5 lenses with surface defects. Formulate an appropriate test for the qualification of the polishing machine using an α = 0.05."
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