In constructing a 99% confidence level estimate of the mean when the population
ID: 3075421 • Letter: I
Question
In constructing a 99% confidence level estimate of the mean when the population standard deviation () is unknown and the sample size is 35, what will be your t score used in the formula? In constructing a 90% confidence level estimate of the mean when the population standard deviation () is unknown and the sample size is 30, what will be your t score used in the formula? In constructing a 98% confidence level estimate of the mean when the population standard deviation () is unknown and the sample size is 33, what will be your t score used in the formula?
Explanation / Answer
a) df = 35 - 1 = 34
T score for 99% confidence interval = t0.005,34 = 2.728
b) df = 30 - 1 = 29
T score for 90% confidnece interval = t0.05,29 = 1.699
c) df = 33 - 1 = 32
T score for 98% confidnece interval = t0.01,32 = 2.449
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.