Q2. The formula for finding the perimeter of a rectangle is shown below. P=2l+2w

What is that same formula rewritten for w in terms of the other variables?

A w=−P/2−l

B w=P/2−l

C w=−P/2+l

D w=P/2+l

answer: john is 20, mary is 15

step-by-step explanation:

hat do significance levels and p values mean in hypothesis tests? what  is  statistical significance anyway? in this post, i’ll continue to focus on concepts and graphs to you gain a more intuitive understanding of how hypothesis tests work in statistics.

to bring it to life, i’ll add the significance level and p value to the graph in my previous post in order to perform a graphical version of the 1 sample t-test. it’s easier to understand when you can see what statistical significance truly means!

here’s where we left off in  my last post. we want to determine whether our sample mean (330.6) indicates that this year's average energy cost is significantly different from last year’s average energy cost of $260.