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Question: Suppose that a company ships packages that are variable in weight, with an average weight of 15 lb and a standard deviation of 10. Assuming that the packages come from a large number of different customers so that it is reasonable to model their weights as independent random variables, find the probability that 100 packages will have a total weight exceeding 1700 lb.
construct a 95% confidence interval for the weekly average expenditure on fast food for adults 24 years of age and under. Assume fast food weekly expenditures are normally distributed.
What is the probability that out of 6 randomly selected students at most 2 are male? What is the probability that out of 6 randomly selected students exactly 4 are female? Find the average number of female students per sample if a large number of ran..
How many samples would be needed to create a 99 percent confidence interval that is within 0.02 of true proportion of premium grade fuel-quality failures.
Find a 95% confidence interval for the difference in the proportions of people who may find these medications effective. Interpret your interval.
the following data represent the number of flash drives sold per day at a local computer shop and their prices.price x
Select a strati?ed random sample that uses full-time and part-time students as the two strata and that includes 10 students from each stratum. Describe the procedure you used to select the sample, and identify the students included in your sample..
provide a definition of the nominal, ordinal, interval, and ratio scales. Conclude your discussion with a reflection on how statistics might be utilized in your own evidence-based practice.
Develop two purpose statements - Develop two corresponding research questions for your purpose statements.
A study compared colleges that tested for drugs with colleges that did not, finding similar levels of students using drugs in each. State a potential lurking variable that could affect the results of a study.
A travel agent suggests that since the law of averages makes it highly unlikely to have two plane crashes within a few weeks of each other, flying soon after a crash is the safest time. What do you think?
Your school is composed of 30% freshmen, 25% sophomores, 25% juniors, and 20% seniors. a. Wh..
a camera manufacturer just shipped a batch of 36 digital cameras to local retailers and seven of the cameras have a
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