Length of Confidence Interval

What is the right-tailed area if the confidence interval is 75%?

• 0.005

• 0.05

• 0.10

• 0.25

It pertains to a small width in relation to the length of the confidence interval.

• sample size

• confidence interval

• population

• narrowness of the interval

What is the absolute difference between the upper confidence limit and lower confidence limit?

• confidence interval

• degree of freedom

• expected value

• length of confidence interval

Find the length of confidence interval: UCL = 0.996, LCL = 0.436.

• 0.560  

• 0.872

• 1.432

• 1.992

What is the LCI when 0.205 < p < 0.650?

• 0.205

• 0.445

• 0.650

• 0.855

What is a/2  when the confidence level is 90% ?

• 0.05

• 0.10

• 0.20

• 0.50

Find the length of confidence interval given the ff. data: σ=0.5, 𝑛=50, confidence level=95%

• 0.5000

• 0.0707

• 0.2772

• 1.9600

What is the confidence level if  a/2 = 0.05 ?

• 90%

• 95%

• 99%

• 99.95%

Confidence intervals measure the degree of uncertainty or certainty in a _________ method.

• Confidence

• Lottery

• Sampling

• z-score

Find the length of confidence interval, given the ff. data: s = 4.2, n= 10, confidence level = 99%

• 17.64

• 8.633

• 6.500

• 1.328