C. Solve the following problems. 11. In a group presentation, the average geometric reasoning of Grade 10 students in a Mathematics camp was observed to be 80 with s standard deviation of 4. A...

Extracted text: C. Solve the following problems. 11. In a group presentation, the average geometric reasoning of Grade 10 students in a Mathematics camp was observed to be 80 with s standard deviation of 4. A researcher wants to replicate the study to estimate the true population mean u to within 0.5 maximum error. If the 98% level of confidence is adopted, how many respondents are needed?