Solve the below problem:
Q: A time study of a factory worker has revealed an average observed line of 3.40 minuses, with a standard deviation of 1.28 minutes. These figures were based on a sample of 45 observation. Assume that the firm wants to be 99% confident that line standard time is within 5% of the true value. Based on the given information and the given confidence level and accuracy level, the number of observations that would be necessary for the line study = observations Based on the findings, the conclusion would be that the current sample size of 45 is for the line study.