MATH 110 MODULE 5 TERMS EXAM
QUESTIONS AND ANSWERS
COMPLETE SOLUTIONS
why do we collect samples? - ANSWERSto collect data from populations to make
inferences and answer questions about a population of interest
element - ANSWERSthe entity for which data are collected
population - ANSWERSthe collection of al the elements of interest
sample - ANSWERSa subset of the population
central limit theorem - ANSWERSin selecting random samples of size n from a
population, the sampling distribution of the sample mean x-bar can be approximated by
a normal distribution as the sample size becomes large
sample proportion p-bar - ANSWERSthe point estimate of the population proportion p
sampling distribution of p-bar - ANSWERSthe probability distribution of all possible
values of the sample proportion p-bar
simple random sampling of size n from a population of size N - ANSWERSa sample
selected such that each possible sample of size n has the same probability of occurring
point estimation - ANSWERSa form of statistical inference in which we use data from a
sample to compute a value of a sample statistic that serves as an estimate of a
population parameter
sampling distribution of x-bar - ANSWERSthe probability distribution of a possible
values of the sample mean x-bar
expected value of sample mean - ANSWERSpopulation mean
QUESTIONS AND ANSWERS
COMPLETE SOLUTIONS
why do we collect samples? - ANSWERSto collect data from populations to make
inferences and answer questions about a population of interest
element - ANSWERSthe entity for which data are collected
population - ANSWERSthe collection of al the elements of interest
sample - ANSWERSa subset of the population
central limit theorem - ANSWERSin selecting random samples of size n from a
population, the sampling distribution of the sample mean x-bar can be approximated by
a normal distribution as the sample size becomes large
sample proportion p-bar - ANSWERSthe point estimate of the population proportion p
sampling distribution of p-bar - ANSWERSthe probability distribution of all possible
values of the sample proportion p-bar
simple random sampling of size n from a population of size N - ANSWERSa sample
selected such that each possible sample of size n has the same probability of occurring
point estimation - ANSWERSa form of statistical inference in which we use data from a
sample to compute a value of a sample statistic that serves as an estimate of a
population parameter
sampling distribution of x-bar - ANSWERSthe probability distribution of a possible
values of the sample mean x-bar
expected value of sample mean - ANSWERSpopulation mean
