Aresearcher is planning to construct a one-sample z? confidence interval for a population mean ? . select the statements that would lead to a smaller margin of error, assuming the other factors remain the same.

a) the population standard deviation turns out to be higher than expected.

b) the researcher increases the sample size.

c) the researcher lowers the confidence level.

d) the researcher decreases the sample size.

e) the population standard deviation turns out to be lower than expected.

f) the researcher raises the confidence level.

i think it's ф or x=6,-6

step-by-step explanation:

-x^2=-36

x^2=-36

ф

or

if you mean by : -(x^2)=-36

it'll be: x^2=36

x=6,x=-6

hope it'll ! have a good day!

you for asking!

answer: if you weigh 60 pounds on earth, on the moon you will weigh about 10 pounds. if you weigh 120 pounds on earth, you will weigh about 20 pounds on the moon. since weight is caused by the mass of two objects that are near each other, the bigger the objects, the more the force of gravity.

step-by-step explanation: if you weigh 60 pounds on earth, on the moon you will weigh about 10 pounds. if you weigh 120 pounds on earth, you will weigh about 20 pounds on the moon. since weight is caused by the mass of two objects that are near each other, the bigger the objects, the more the force of gravity.

squares, rhombus, rectangles

the answer would be 0.54