:
8-23.
@'wvi?*t.o%
Pl,evie'rl
\F
The two histograms below show how precisely Lue threw 50 darts with his right hand
and then 50 with his left hand. Stucly the two histograms.
o
O
o
()
4)
L
l!
Distance Fronr Bull's Eye (in.)
Distance From Bull's Eye (in.)
a.
Estimate what the box plots would look like ancl make
a parallel box plot. I Possible solution plot at right. ]
b.
Compare the center, shape, spread, and outliers
between Lue's left hand and right hand. I With his left
hand, Lue's median shot is 5 or 6 inches closer to
the bull's eye; rvith his right hand, the distribution of Lue's shots is
symmetric and single peaked; with his left hand, the distribution is skeryed
lvith a peak at the bull's-eye; Lue has more tosses closer to the bull's-eye
rvith his left hand; IQR for left hand is about 4.5; neither hand threw any
outliers, but students may feel that 14 is an outlier for the Ieft hand.l
C.
ls Lue more precise throwing with his right hand or with his left hand?
I Lue throws more consistently with his left hand because the IQR is smaller
on the box plots.l
d.
Use the box plot to estimate how many IQRs above the median Lue's better hand
is. Explain your thinking. I About one IQR. ]
8-24.
Find the missing lengths or values on the diagram below. Assume that the line is
evenly divided. I a=0.3, b =A.4, c = 40Vo, d :LSVo I
r.0
0c/o
\_ d _)t_
4
_)
Chapter 8: Statistics and Angle l{elationships
1007c
8.1:l
8-25.
Joaquin has agreed to lend his younger brother $45 so that he can buy a new tank for
his pet lizard. Joaquin is charging his brother ZVo simple interest per month. lf his
broiher pays him bick in 6 months, how much will Joaquin get back? t $5O.rlO l
8-26.
Michaela holds her state high school record for
the 500-meter freestyle swimming event. She
can swim the event in 4 minutes and 50 seconds.
At this sarte rate, holv far will she swim iu
l0 minutes? [ She will srvim 1034.48 meters. ]
8-n.
Mrs. Chen has two brotheis. Mark is 7 years older than Mrs. Chen and Eric is
I I years younger than Mrs. Chen. The sum of all three of their ages is 149. Use the
5-D Process to determine the age of Mrs. Chen. I Mrs. Chen is 51 years old. ]
8-28.
For ezich equation below, solve
answef .
for
a. 2t= r-lj.
b.
I x=3] l
844
"r:. Show the process you use to check your
5x=2x+12
lx=4]
c.
x-14.6 = 8.02
I x =22.62 )
Core Connec{icttts, Crtttrse
2