To define the confidence level used to find out the confidence interval
Presume that the population of the scores of all high school seniors who took the SAT math (SATM) test this year follows a normal distribution with standard deviation σ = 100. You read a report that says based on a simple random sample of 100 high school seniors that took the SATM test this year, a confidence interval for µ is found to be 512.00 ± 25.76. " Compute What was the confidence level used to find out this confidence interval?
A) 90%
B) 95%
C) 99%
D) 99.9%