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Stats for Strategy Whitten
HW 1 Solution
I. Text Exercises
3.15 (a) Population = all eating and drinking establishments in the city
(b) Population = all constituents in the Congressperson’s district.
(c) Population = all auto insurance claims ﬁled during that month
3.58 (a) The number 43 is a sample statistic
. Converting to a proportion,
b
p
=
0.43
.
(b) The number 52% is a population parameter
:
p
=
0.52
.
3.59 (a)
p
=
0.68
is a population proportion (parameter.)
(b)
b
p
=
0.73
is a sample proportion (statistic.)
3.66 The ﬁgure 6.2% is a statistic
:
b
p
=
0.062
.
3.67 (a) The number 2.503 is a population parameter (mean):
μ
=
2.503
.
(b) The number 2.515 is a sample statistic (mean): ¯
x
=
2.515
.
3.65 (a) Population = all people who live in Ontario.
Sample = the 61,239 people interviewed.
(b) Assuming that the people interviewed were randomly
sampled, the statistics
b
p
1
= 0.76 and
b
p
2
= 0.86
are very likely to be close (small margin of error) to the parameters
p
1
= proportion of males in Ontario who visited a general practitioner at least
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 Spring '07
 blake

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