SOMEONE help! The CORRECT answer gets brainliest! Eight trials are simulated. The results are shown in the table.

Simulation
109 105 112 110
115 106 108 109

What is the estimated margin of error, using standard deviation?

Enter your answer, rounded to two decimal places, in the box.
± ___

Apsychology student wishes to investigate differences in political opinions between business majors and political science majors at her college. she randomly selects 100 students from the 260 business majors and 100 students from the 180 political science majors. does this sampling plan result in a simple random sample? why or why not? no, because each group of 200 students in the sample does not have the same chance of being selected. yes, because each group of 200 students in the sample has the same chance of being selected. no, because each individual student does not have an equal chance of being selected. yes, because each individual student has the same chance of being selected.