QMB3200 Exam 1 Complete Questions with 100% Correct Answers
6 views 0 purchase
Course
QMB3200
Institution
QMB3200
QMB3200 Exam 1 Complete Questions with 100% Correct Answers
A random sample of 121 bottles of cologne showed an average content of 4 ounces. It is known that the standard deviation of the contents (i.e., of the population) is .22 ounces. In this problem, the value .22 ounces is:
a parameter
For ...
QMB3200 Exam 1 Complete Questions with 100% Correct Answers
A random sample of 121 bottles of cologne showed an average content of 4 ounces. It is known that the standard deviation of the contents (i.e., of the population) is .22 ounces. In this problem, the value .22 ounces is:
a parameter
For a(n) _____ population, it is impossible to construct a sampling frame.
infinite
When drawing a sample from a population, the goal is for the sample to:
match the targeted population
A simple random sample of size n from an infinite population of size N is to be selected. Each possible sample should have:
the same probability of being selected
A simple random sample of size n from a finite population of size N is a sample selected such that each possible sample of size:
a. N has a probability of .1 of being selected.
b. n has a probability of .5 of being selected.
c. n has the same probability of being selected.
d. N has the same probability of being selected.
c. n has the same probability of being selected.
A simple random sample of size n from an infinite population is a sample selected such that:
each element has a probability of at least .5 of being selected.
The medical director of a company looks at the medical records of all 50 employees and finds that the mean systolic blood pressure for these employees is 126.07. The value of 126.07 is:
a parameter
parameter
A characteristic or constant factor, limit
Which of the following is a point estimator?
a. μ
b. p
c. s
d. σ
c. s The value of the _____ ________ is used to estimate the value of the population parameter.
sample statistics
Sample statistics, such as x̅ , s, or p̅, that provide the point estimate of the population parameter are known as:
point estimators
The sample mean is the point estimator of:
μ.
The population we want to make inferences about is called the:
target population
The sample statistic characteristic s is the point estimator of:
σ
Which of these best describes a sampling distribution of a statistic?
a. It is the probability that the sample statistic equals the parameter of interest.
b. It is the probability distribution of the values of a statistic that are contained in all possible samples of the same sample size.
c. It is the distribution of all of the statistics calculated from all possible samples of the same sample size.
d. It is the histogram of sample statistics from all possible samples of the same sample size.
c. It is the distribution of all of the statistics calculated from all possible samples of the same sample size.
The distribution of values taken by a statistic in all possible samples of the same size from the same population is called a:
sampling distribution
The distribution of values taken by a statistic in all possible samples of the same size from the same population is the sampling distribution of:
the sample
how to get standard error
Divide the standard deviation by the square root of the sample size (n).
In a recent Gallup Poll, the decision was made to increase the size of its random sample of voters from 1500 people to about 4000 people. The purpose of this increase is to:
reduce the standard error of the estimate.
A sample of 92 observations is taken from an infinite population. The sampling distribution of is approximately:
a. normal because is always approximately normally distributed.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Topscorer1. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.00. You're not tied to anything after your purchase.
