Assume a previous study found the standard deviation to be 1.6. She thinks the mean is 6.2 computer games per year. What is the minimum sample size required to ensure that the estimate has an error of at most 0.11 at the 99%

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.

Graph the system of inequalities presented here on your own paper, then use your graph to answer the following questions: y > 2x + 3y is less than negative 3 over 2 times x minus 4part a: describe the graph of the system, including shading and the types of lines graphed. provide a description of the solution area. (6 points)part b: is the point (â’4, 6) included in the solution area for the system? justify your answer mathematically. (4 points)

Choose the correct translation for the following statement. it is at most ten. x< 10 x< 10 x> 10 x> 10