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consider a small population of n 5 units labeled 1 2 3 4 5 with respective y-values 3 1 0 1 5 consider a simple random
a simple random sample of 10 households is selected from a population of 100 households the numbers of people in the
in figure 24 the locations of objects eg trees mines dwellings in a study region are given by the centers of symbols
using the data from your own survey see exercise 5 of chapter 2 give 95 and 99 confidence intervals for the population
for the population of n 5 units of exercise 3 of chapter 2a compute directly the variance vary of the sample mean and
from the data of parts a and b of exercise 1 of chapter 2 construct approximate 95 confidence intervals for the
using the sample variance from the data of your own survey to estimate the population variance specify a desired
compute the sample sizes for exercise 1 when the finite-population correction factor is ignored what do you conclude
a botanical researcher wishes to design a survey to estimate the number of birch trees in a study area the study area
carry out a survey to estimate a proportion in a population of your choice examples include the proportion of vehicles
for the population of exercise 3 what sample size is required to simultaneously estimate the proportion with each blood
what sample size is required to estimate the proportion of people with blood type o in a population of 1500 people to
a market researcher plans to select a simple random sample of households from a population of 30000 households to
to estimate the proportion of voters in favor of a controversial proposition a simple random sample of 1200 eligible
use sampling with probability proportional to size with replacement to estimate the mean or total of a population of
in a water pollution study a sample of lakes is selected from the 320 lakes in a study region by the following
for the design and data of exercise 1a estimate the population total using the horvitz-thompson estimatorb give an
an unequal probability sample of size 3 is selected from a population of size 10 with replacement the y-values of the
assume that the y -values in the population are related to an auxiliary variable x through the ratio model yinbsp
determine the first- and second-order terms of a taylor series expansion of the ratio estimator use the approximation
carry out a survey to estimate the mean or total of a population of your choice in which an auxiliary variable is
for a hypothetical survey to determine the number of pileated woodpecker nests the study area is divided into n 4