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

Before simplifying, how many terms are there in the expression 2x - 5y + 3 + x?

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

Angle xyz is formed by segments xy and yz on the coordinate grid below: a coordinate plane is shown. angle xyz has endpoints at 3 comma negative 1 and 6 negative 2 and 3 comma negative 3 and measures 36.87 degrees. angle xyz is rotated 270 degrees counterclockwise about the origin to form angle x′y′z′. which statement shows the measure of angle x′y′z′?