If all other quantities remain the same, how does the indicated change affect the width of a confidence interval? Decrease the sample size from 120 to 90:
A. The interval will stay the same
B. The interval will get wider
C. The interval will get narrower
D. Sample size does not have any influence on confidence interval
| B. The interval will get wider |
Decrease sample size increases width of confidence interval.
If all other quantities remain the same, how does the indicated change affect the width of...
If all other quantities remain the same, how does the indicated change affect the width of a confidence interval? Decrease the confidence level from 99% to 95%: A. The interval will get wider B. The interval will get narrower C. The interval will stay the same
If all other quantities remain the same, how does the indicated change affect the width of a confidence interval? Decrease the sample size from 120 to 90:
How will increasing the sample size without changing the level of confidence affect the width of a confidence interval for a population mean? Assume that the population standard deviation is unknown and the population distribution is approximately normal. Select your answer from the choices below. The margin of error will increase because the critical value will increase and the sample size, n, is located in the denominator of the formula for margin of error. The increased margin of error will...
In the construction of confidence intervals, if all other quantities are unchanged, an increase in the sample size will lead to a ______________ interval. A) narrower B) wider C) less significant D) biased
Which one is the right one?
Keeping all the other things the same, if there is an increase in the sample size the confidence interval would become O No change Wider 0 Change from a 99% to a 95% level of confidence Narrower
QUESTION 1 Suppose we have a sample size of 100 and calculate a confidence interval. What will happen to that interval if we then get a sample size of 200 (all else equal). It will become narrower It will become wider. It will remain the same, because the mean is not changing It will get closer to 1.96.
QUESTION 1 Suppose we have a sample size of 100 and calculate a confidence interval. What will happen to that interval if...
Does a confidence interval get wider or narrower if: (a) the percent of desired confidence decreases from 95% to 90%? (b) the size of the sample used to produce the confidence interval is decreased?
In a sample of n=3,600 students, the average GPA was x⎯⎯=3.5 with a sample variance of s2=0.25. Calculate the 98% confidence interval for the population GPA μ Holding everything constant, how would your confidence interval change if you wanted to have only 90% confidence in the population mean? Question 6 options: It would stay the same It would get wider It would get narrower This answer cannot be answered without additional information.
Answer and explain. If all other quantities remain the same, what will happen to the width of a confidence interval if there is an increase in the:confidence level;sample size; andstandard deviation
4. During April 5-12, 2010, A CBS News/New York Times poll surveyed a sample of 1,580 adult Americans. 40% of those surveyed believed current gun control laws should be made more strict. a. Construct a 95% confidence interval for the proportion of all adult Americans who believe gun control laws should be made more strict. State the width and the margin of error for this confidence interval. [6] b. What would happen to the margin of error if the confidence...