(a) Find the standard error of the mean for each sampling situation (assuming a normal population). (Round your answers to 2 decimal places.)
Standard
Ercor.
(a) o = 42, n = 9
(b) 0 - 42, n - 36
(c) 0 - 42, n - 144
(b) What happens to the standard error each time you quadruple the sample size?
The standard error is (Click to select) by half.

30

step-by-step explanation:

times by times

p ÷ r = tan(x)

step-by-step explanation:

given that there is a figure below shows a right triangle: a right triangle is shown with hypotenuse equal to q units and the length of the legs equal to p units and r units.

graph is missing so i will create the graph as per given information.

the angle between the legs having lengths p units and q units is y degrees. the angle between the legs having lengths r units and q units is x degrees.

now we need to find about what is p ÷ r equal to.

so we can use trigonometric ratio tan(x)=[altitude]/[base] to find the value of p ÷ r, because p is the altitude and r is the base.

p ÷ r=tan(x)

hence final answer is p ÷ r=tan(x).