C.W. Churchman once said that "Mathematics...tends to lull the unsuspecting that he who thinks elaborately thinks well." Do you think that the best QA Models are the ones that are most elaborate and complex Mathematically? Why?

Hi, I need help solving this OM problem. Thank you! Table E.3 is shown in the blue box onscreen.

How would I go about answering this maths question

Research has shown that losing even one night's sleep can have a significant effect on performance of complex tasks, such as problem solving (Linde & Begrstroem, 1992). To demonstrate this phenomenon, one sample of n=25 college students was given a problem-solving task at noon on one day and again at noon on the following day. The students were not permitted any sleep between the two tests. For each student, the difference between the first and second scores was recorded. For this sample, the students averaged MD=4.7 points better on the first test with a variance of s^2=64 for the different scores. 1. State the hypotheses both experimental and statistical. 2. Do the data indicate a significant decline in problem-solving ability? Use a one-tailed test with a=.01. Please show work and state your decision regarding the H0. 3. Compute a 90% Confidence Interval (upper and lower values). 4. State your conclusion in APA format.