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20171020024707inss_hw.docx
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A rental car agency has 15 rental cars on its lot. The following table shows the mileage of each car. Use
the data to complete parts a through d below.
19 comma
11 comma
76619,766
20311,203
6 comma 8676,867 14 comma
70714,707
4 comma 3564,356 16 comma
70916,709
a. Calculate the mean for this population.
18 comma
10 comma
8 comma 0228,022
69718,697
43110,431
6 comma 7816,781 4 comma 3964,396 11 comma
07811,078
15 comma
13 comma
19 comma
67015,670
63613,636
40719,407
muμequals=
nothing
(Round to one decimal place as needed.)
For a population with a mean equal to
100100
and a standard deviation equal to
3535,
calculate the standard error of the mean for the following sample sizes.
a) 10
b)
40
c)
70
a) The standard error of the mean for a sample size of
10
is
nothing .
According to a research institution, the average hotel price in a certain year was
$101.68101.68.
Assume the population standard deviation is
$20.0020.00
and that a random sample of
4747
hotels was selected. Complete parts a through d below.
a. Calculate the standard error of the mean.
sigma Subscript x overbarσ x equals=$
(Round to two decimal places as needed.)
nothing
A college research group reported that
4343%
of college students aged 18-24 would spend their spring breaks relaxing at home in 2009. A sample of
140140
college students was selected. Complete parts a through d below.
a. Calculate the standard error of the proportion.
sigma Subscript pσpequals=
(Round to four decimal places as needed.)
nothing
…
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