Bstat Exam 2- Lowry questions and
answers graded A+
A sample selected so that each item or person in the population has the same chance of being
included - correct answer ✔✔Simple random sample
A random starting point is selected, and then every Nth member of the population is selected -
correct answer ✔✔Systematic Random Sample
A population is divided into subgroups, called strata, and a sample is randomly selected from
stratum - correct answer ✔✔Stratified Random Sample
A population is divided into clusters using naturally occurring geographic or other boundaries.
Then, clusters are randomly selected and a sample is collected b randomly selecting from each
cluster - correct answer ✔✔Cluster Sampling
The difference between a sample statistic and its corresponding population parameter - correct
answer ✔✔Sampling Error
A probability distribution of all possible sample means of a given sample size - correct answer
✔✔Sampling distribution of the sample mean
If all samples of a particular size are selected from any population, the sampling distribution of
the sample mean is approximately a normal distribution. This approximation improves with
larger samples - correct answer ✔✔Central limit theorem
In a hypothesis test comparing two population means, the equal sign always appears in the: -
correct answer ✔✔Null Hypothesis
answers graded A+
A sample selected so that each item or person in the population has the same chance of being
included - correct answer ✔✔Simple random sample
A random starting point is selected, and then every Nth member of the population is selected -
correct answer ✔✔Systematic Random Sample
A population is divided into subgroups, called strata, and a sample is randomly selected from
stratum - correct answer ✔✔Stratified Random Sample
A population is divided into clusters using naturally occurring geographic or other boundaries.
Then, clusters are randomly selected and a sample is collected b randomly selecting from each
cluster - correct answer ✔✔Cluster Sampling
The difference between a sample statistic and its corresponding population parameter - correct
answer ✔✔Sampling Error
A probability distribution of all possible sample means of a given sample size - correct answer
✔✔Sampling distribution of the sample mean
If all samples of a particular size are selected from any population, the sampling distribution of
the sample mean is approximately a normal distribution. This approximation improves with
larger samples - correct answer ✔✔Central limit theorem
In a hypothesis test comparing two population means, the equal sign always appears in the: -
correct answer ✔✔Null Hypothesis
