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A study of 24 graduates of four-year colleges revealed the mean amount owed by a student in student loans was $14,381. The standard deviation of the sample was $1,892. Construct and explain a 90% confidence interval estimate of the population mean amount owed in student loans
Calculate the appropriate disease frequency rate. Show your work. The cumulative incidence rate in a population of 100,000 people where 9 new cases of disease were reported within 1 year.
In a recent year grade 8 Washington State public school students taking a mathematics assessment test had a mean score of 276.1 with a standard deviation of 34.4. Possible test scores could range from 0 to 500. Assume that the scores are normally dis..
In Gallup polls taken at different times, subjects were asked if they owned a gun, and the number of yes responses was recorded for each time period. Is this discrete or continuous? why?
In Part A of this assignment, you selected a random sample of 30 StatCrunch U students and created a StatCrunch file containing data from the above survey for those students. You will use the StatCrunch data file you created in Part A to complete thi..
Find the calcium level that is the borderline between low calcium levels and those not considered low. Carry your intermediate computations to at least four decimal places.
The same researcher wishes to estimate the proportion of executives who own a car phone. She wants to be 90% confident and be accurate within 5% of the true proportion. Find the minimum sample size necessary
According to a national survey of 1,500 Silverman Sachs customers, 1,050 of them were either satisfied or very satisfied with their financial advisor.
Jim Sears manufactures farm equipment. His work requires the use of steel bars which must have a mean length of at least 50 inches. The bars can be purchased from a supplier in Kansas
Compute the 99% confidence interval for the percentage of packages that are delivered damaged in the population.
Instructions: Perform the 5-step hypothesis testing procedure, HERE ARE THE STEPS THAT NEED TO BE FOLLOWED & THE RAW DATA IS BELOW. Hypothesis Testing Steps given
a survey of adults ages 18-29 found that 82 use the internet. you randomly select 196 adults ages 18-29 and ask them if
Strongly support, support, no opinion, do not support, strongly do not support. The number of people in each category was recorded.
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