A study found that 89.4% of patients who had a new procedure 1 point experienced significant relief from back pain. This study is considered accurate within plus or minus 3.2%, 99 times out of 100. * There is a 99% probability that between 86.2% and 92.6% of patients would O experience significant relief from back pain. O There is a 95% probability that between 86.2% and 92.6% of patients would experience significant relief from back pain. O There is a 09% probability that between 88.4% and 90.4% of patients would experience significant relief from back pain. O There is a 90% probability that between 89.4% and 92.6% of patients would experience significant relief from back pain