Mathematics, 25.06.2019 21:30 mikey200059
Fewer young people are driving. in 1983, 87% of 19-year-olds had a driver’s license. twenty-five years later that percentage had dropped to 75% (university of michigan transportation research institute website, april 7, 2012). suppose these results are based on a random sample of 1200 19-year-olds in 1983 and again in 2008. a. at 95% confidence, what is the margin of error and the interval estimate of the number of 19-year-old drivers in 1983? b. at 95% confidence, what is the margin of error and the interval estimate of the number of 19-year-old drivers in 2008? c. is the margin of error the same in parts (a) and (b)? why or why not?
Answers: 1
Mathematics, 21.06.2019 14:30
In each bouquet of flowers, there are 2 roses and 3 white carnations. complete the table to find how many roses and carnations there are in 2 bouquets of flowers.
Answers: 1
Mathematics, 21.06.2019 19:30
The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)
Answers: 3
Mathematics, 21.06.2019 22:20
Question 5 of 10 2 points if a population is a sample of the population could be a. registered voters; all citizens o o b. baptists; all religious people o c. people who purchased shoes; all customers o d. the entire school faculty; math teachers
Answers: 3
Mathematics, 22.06.2019 01:30
Which shaded region is the solution to the system of inequalities? y y[tex]\geq[/tex]-x+1
Answers: 3
Fewer young people are driving. in 1983, 87% of 19-year-olds had a driver’s license. twenty-five yea...
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