Confidence interval research paper
Second, for clarity, APA Style recommends that confidence intervals be reported with brackets around the upper and lower limits (as outlined on page 117):
A confidence interval is a statistical tool that estimates the range of values with a given probability of including the unknown, true value of a population parameter
HOW TO WRITE A RESEARCH PAPER. Will G Hopkins PhD. Department of Physiology and School of Physical Education, University of Otago, Dunedin 9001, New Zealand.