As the angle between a sling leg and the horizontal decreases, sling tension is increased

This is a example of a double eye synthetic fibre web sling

This image is a 

This is a example of a 

The part indicated in the circle is primarily  used for ______________ 

To be scientific, a hypothesis needs to be[blank] and [blank] .

Is the following a good scientific hypothesis?: “The number of siblings a child has is related to the number of friends they make in school.” Explain why or why not. If not, then rewrite and improve it.

Science is an [blank]  and [blank]  process.

A one-sample z-test is used to determine whether the mean of one sample differs from a known population mean.

What is the main purpose of a one-sample z-test?