Given a population mean of 41.8 with a standard deviation of 5.2 and a sample size of 9. What is the standard deviation of the sampling distribution of X

What does the sample size need to be if you want the standard deviation of the sampling distribution of x to be 2.6

Answercounterclockwise rotation about the origin by 180 degrees followed by reflection about the y-axisexplanationthe given figure has verticesrecall that for counterclockwise rotation about the origin, when we rotate figure pqrs counterclockwise through an angle of 180° about the origin, the coordinates will becomenext, we reflect in the y-axis by negating the x-coordinates of the resulting figure to obtain,therefore the correct answer is c