Suppose a stratified sample of sizen=30 was picked from a population of size N=251 and the collected data were summarized as shown in the table below: Stratum 1 Stratum 2 Stratum 3 N,=132 N2=92 N3=27 10

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Suppose a stratified sample of sizen=30 was picked from a population of size
N=251 and the collected data were summarized as shown in the table below:
Stratum 1
Stratum 2 Stratum 3
N=132
N2=92
N3=27
n2=10
y_bar 1=8.7 y_bar2=6.7 y_bar3=4.5
sz2=49
n;=18
n3=2
s;?=64
s32=25
Use the above data to estimate the population total and compute its associated
bound on the error of estimation. (note that y_barl denotes the sample mean for
stratum 1)
Transcribed Image Text:Suppose a stratified sample of sizen=30 was picked from a population of size N=251 and the collected data were summarized as shown in the table below: Stratum 1 Stratum 2 Stratum 3 N=132 N2=92 N3=27 n2=10 y_bar 1=8.7 y_bar2=6.7 y_bar3=4.5 sz2=49 n;=18 n3=2 s;?=64 s32=25 Use the above data to estimate the population total and compute its associated bound on the error of estimation. (note that y_barl denotes the sample mean for stratum 1)
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