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The Aluminum Association reports that the average American uses 56.8 pounds of aluminum in a year. A random sample of 50 households is monitored for one year to determine aluminum usage. If the population standard deviation of annual usage is 12.3 pounds, what is the probability that the sample mean will be each of the following?
a. Between 55 and 58 pounds
The grades of a sample of 5 students, selected from a large population, are given below. Determine a point estimate for the variance of the population.
the t distribution has more area in the tails and less in the center than does the standard normal
Convert them into valid standard-form syllogisms. - Suicide is not immoral. If a person decides that life is impossible, it is his or her right to end it.
To test the hypothesis that students who finish an exam first get better grades, the Professor kep track of the order in which papers were handed in.
?(a) What is the minimum red blood cell count that can be in the top 27?% of? counts? ?(b) What is the maximum red blood cell count that can be in the bottom 1
Based on your studies and personal experiences, take a side in this question and defend your answer. Provide one example of a leader that supports.
Describe the sampling distribution of X. - What is the mean of this sampling distribution?- What is the standard deviation of this sampling distribution?
Suppose urn #2 has 6 red and 12 blue balls. Suppose we pick three balls uniformly at random from each of the two urns.
If a randomly selected student does not live in the dormitory, what is the probability that the student is a freshman?
If appropriate, use the Marascuilo procedure and α = .01 to determine which, if any, year groups are significantly different in the proportion of passengers who book tickets online.
A company uses triple time estimates to determine expected completion time for all of their projects. If they determined the expected time to complete a project is 25 weeks with a variance of of 9 weeks
Why is communication and pop culture as a whole important?
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