Based on the graph, which statement BEST describes aging trends in the 24
United States?
Age Groups in the United States
40%
20 to 4 years old
5to 19 years old
30%
20%
Under 5 years old
10
45 to 64 years old
65 years old and over
0
а
1880
1900
1 850
1920
1940
1960
1980
2300 2010
a.
b.
In general, the American population is getting younger
The proportion of 5 to 19 year-olds has remained relatively stable for the
past 150 years.
Seniors make up more of the population now than they have at any time
over the past 150 years.
Americans today have more children than they did 100 years ago
C.
d.

Which function families have maximums and minimums? 1.)linear absolute value functions and exponential functions 2.) linear absolute value functions and quadratic functions 3.) linear absolute value functions and linear functions 4.) linear absolute value functions and constant functions

The data shown in the table below represents the weight, in pounds, of a little girl, recorded each year on her birthday. age (in years) weight (in pounds) 2 32 6 47 7 51 4 40 5 43 3 38 8 60 1 23 part a: create a scatter plot to represent the data shown above. sketch the line of best fit. label at least three specific points on the graph that the line passes through. also include the correct labels on the x-axis and y-axis. part b: algebraically write the equation of the best fit line in slope-intercept form. include all of your calculations in your final answer. part c: use the equation for the line of best fit to approximate the weight of the little girl at an age of 14 years old.

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.