Asked by Shaima Albusaidi on Apr 25, 2024
When a researcher moves from a 95% confidence level to a 90% confidence level, the confidence interval for the mean becomes ______.
A) wider
B) normally distributed
C) statistically significant
D) narrower
Confidence Level
Confidence level indicates the probability that a population parameter will fall between two set values for a certain proportion of times.
Confidence Interval
An array of values, derived from observations of a sample, which is believed to enclose the value of a mystery parameter in the population.
Mean
The arithmetic average of a set of numbers, calculated by dividing the sum of the numbers by the count of numbers.
- Apprehend the association between degrees of assurance and the magnitude of interval sizes.
- Appreciate the consequence of modifying confidence levels on the exactness of confidence intervals.
Learning Objectives
- Apprehend the association between degrees of assurance and the magnitude of interval sizes.
- Appreciate the consequence of modifying confidence levels on the exactness of confidence intervals.