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Assume the following probabilities:
P(Customer makes a purchase) = 0.450
P(Customer does not make a purchase) = 1- 0.450
Compute the probability that both customers purchase (# purchases = 2), and enter your answer with 3 decimal places.
Consider how it might be violated and what the effect of such a violation might be on your answer.
Construct an individuals and a moving-range chart on the data before process improvement changes are made and comment on process stability.
Biology and Environmental Science During Spring 2013, a huge population of 17-year cicadas emerged from the ground on the East Coast of the United States.
assume that adults have iq scores that are normally distributed with a mean of 100 and a standard deviation of 15.find
Suppose a statistics professor offers two midterm exams, each worth 100 points. A student plans to do a lot of traveling during the semester for job interviews
The producer of a weight-loss pill advertises that people who use the pill lose, after one week, an average (mean) of 1.75 pounds with a standard deviation of 1.02 pounds. In a recent study, a group of 55 people who used this pill were interviewed..
What reasons for complaints do you think the hotel should focus on if it wants to reduce the number of complaints? Describe.
Use Chebyshev's theorem to find what percent of the values will fall between 120 and 150 for a data set with mean of 135 and standard deviation of 7.5.
What is the relationship between confidence intervals and hypothesis testing? How are they the same? How are they different?
Out of forty students, 14 are taking English Composition and 29 are taking Chemistry. If five students are in both classes, how many students are in neither class? How many are ineither class?
Researchers at the Cornell University Food and Brand Lab conducted an experiment at a fitness camp for adolescents (Wansink & van Ittersum, 2003).
Calculate using excel analysis tools the significance of the difference between the proportion of men and women who support gun control with 74 men oppose.
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