1.3.3. Week 5 Attendance Quiz Hints

AQ04_8:

  1. See Sampling and Confidence Intervals. From Table 4.2, Z_{\alpha/2} for C = 0.85 is 1.44. Use the equation above Figure 4.15 to find the interval.

  2. See Statistical Significance. Remember that the null hypothesis states that the groups of interest are the same, while the alternate hypothesis state that the groups perform differently in some way.