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IQ Suppose you have a data set with IQ levels of some students who perform well in quizzes and some students who are excellent athletes.
Which group of students do you think would have a higher standard deviation of IQ levels? Explain.
Unknown to the purchasing manager, the drills on the truck require an average of 295 watts, with a standard deviation of 12 watts. Stating any additional assumptions you are using, find the probability that the truckload of drills will be rejected..
Usually people do not like waiting in line a long time for service. A bank manager does not want the variance of the waiting times for her customers.
Is the process stable?- If not, assuming identifiable remedial actions with the special causes, revise the centerline and control limits.
Identify the types of measurements used in the study. Which of the statistics presented, provides the most compelling evidence to support the author's position?
Calculate the mean and standard deviation of the sample mean weight of 8 randomly selected humans.
If you wanted to pretend that you could do psychic readings, you could perform "cold readings" by inviting people you do not know to allow you to tell.
Draw a tree diagram to show all possible outcomes of the experiment. Label the probability associated with each stage of the experiment on the appropriate branch.
suppose youre given a data set that classifies each sample unit into one of four categories a b c d. you plan to create
A researcher is curious whether or not a person's level of education influences his or her personal outcome. Identify the most logical (i) response
You are making several runs of a simulation model, each with a different value of some decision variable.
Observations was x ¯ = 119.8 (actually 119.7692), and the 14th observation, somewhat of an outlier, was 158. What is the value of x ¯ for the entire sample?
an accounting firm has noticed that of the companies it audits 85 show no inventory shortages 10 show small inventory
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