Question 3 of 5
video
hint
report
minnesota moose
9000+
the scatterplot to the left shows the number of moose, m. estimated to
be living in minnesota from 2005 to 2012. which of the following
equations best models the population of moose in minnesota during this
time period, where t represents the years since 2005?
8000)
7000 +
@
m = 8,593 – 563
estimated moose population
©
m = 10,343 – 1,842
6000+
§ 5000+
4000+
3000+
2000+
©
m = 7,923 + 578
o
m = 5,725 + 4677
1000+
1
2
6
7
3 4 5
years since 2005

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.