WGU C431 Healthcare Research & Statistics Quiz | Questions with 100% Correct Answers | Verified | Latest Update

A p-value of 0.023 is ___ standard deviation(s) above or below the mean. A. less than one B. close to two C. more than three D. exactly four E. five - B. close to two A power analysis is calculated to A. Determine the sample size at the beginning of the study B. Take into consideration a 20% drop out rate C. Ensure the sample size was large enough to detect differences in the treatment and comparison group after data collection D. A and B E. All of the above - C. Ensure the sample size was large enough to detect differences in the treatment and comparison group after data collection A procedure for combining items in a survey instrument to represent a single concept (called a construct or domain). A survey is broken down into domains (also called subscales) that include multiple questions. A certain number of items needs should to be included in each domain in