Mathematics, 14.11.2019 19:31 mine9226
Thirty-three small communities in connecticut (population near 10,000 each) gave an average of x = 138.5 reported cases of larceny per year. assume that σ is known to be 43.3 cases per year. (a) find a 90% confidence interval for the population mean annual number of reported larceny cases in such communities. what is the margin of error? (round your answers to one decimal place.) lower limit upper limit margin of error (b) find a 95% confidence interval for the population mean annual number of reported larceny cases in such communities. what is the margin of error? (round your answers to one decimal place.) lower limit upper limit margin of error (c) find a 99% confidence interval for the population mean annual number of reported larceny cases in such communities. what is the margin of error? (round your answers to one decimal place.) lower limit upper limit margin of error
Answers: 2
Mathematics, 21.06.2019 18:00
What does the relationship between the mean and median reveal about the shape of the data
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Mathematics, 21.06.2019 20:50
An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.
Answers: 3
Mathematics, 22.06.2019 02:40
Point a (7,3) is translated to a'(16,-9). which rule describes the translation?
Answers: 1
Thirty-three small communities in connecticut (population near 10,000 each) gave an average of x = 1...
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