Multiple Choice
If the confidence level is increased from to , what happens to the width of the confidence interval for a population mean (assuming all other factors remain constant)?
10
views
7. Sampling Distributions & Confidence Intervals: Mean
Introduction to Confidence Intervals
Struggling with Statistics?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following provides information about the statistical validity of Dr. Lonsbary's study?
A
The confidence interval for the estimated parameter
B
The sample mean alone
C
The raw data values without any summary statistics
D
The name of the statistical software used
Verified step by step guidance1
Understand that statistical validity refers to how well the results of a study reflect the true population parameters and how reliable those results are.
Recognize that the sample mean alone provides a measure of central tendency but does not indicate the precision or reliability of the estimate.
Know that raw data values without summary statistics do not directly provide information about the reliability or uncertainty of the estimates.
Identify that the name of the statistical software used does not affect the validity of the study's results; it is just a tool for analysis.
Realize that a confidence interval gives a range of plausible values for the estimated parameter and quantifies the uncertainty, thus providing information about the statistical validity of the study.
6:33mWatch next
Master Introduction to Confidence Intervals with a bite sized video explanation from Patrick
Start learningRelated Videos
Related Practice
Introduction to Confidence Intervals practice set
Problem sets built by lead tutorsExpert video explanations