Find the value! Will mark brainliest

What is the perimeter of square abcd? units units 28 units 37 units

Create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1.

Aproduction manager test 10 toothbrushes and finds that their mean lifetime is 450 hours. she then design sales package of this type of toothbrush. it states that the customers can expect the toothbrush to last approximately 460 hours. this is an example of what phase of inferential statistics