So I have already solved these problems, I would just like to check if they are correct, they are simple plug and chug, but I would just like to make sure :^) Thank you!

Question

So I have already solved these problems, I would just like to check if they are correct, they are simple plug and chug, but I would just like to make sure :^)  Thank you!

anonymous · Answer

attachment

jim_thompson5910 · Answer

question 3 looks good

jim_thompson5910 · Answer

unfortunately I don't remember how to do 4, so someone else will have to check that

but I'm now looking at 5

jim_thompson5910 · Answer

for #5, I'm getting this test statistic

(3.72-3.50)/(1.25/sqrt(8)) = 0.497803

jim_thompson5910 · Answer

for the next box on #5, I'm getting 1.64485 which I guess it's pretty close to 1.65

jim_thompson5910 · Answer

oh wait, I just noticed that the last two boxes in #3 are off. So I'd redo that one

anonymous · Answer

wait so for #3 its 95 then -2.58 yes :^)?

jim_thompson5910 · Answer

you have the -2.58 right, but it's for box 3

jim_thompson5910 · Answer

you should have 2.58 for box 2

jim_thompson5910 · Answer

because the acceptance region is from -2.58 to 2.58

anything outside this region is the rejection region

anonymous · Answer

Thank you so very much for your helpful insight!

anonymous · Answer

quick q  though how did you get "for the next box on #5, I'm getting 1.64485 which I guess it's pretty close to 1.65", don't you just look on a chart for that?

jim_thompson5910 · Answer

I used a calculator to get 1.64485 (specifically I used the program Matlab), but yes you use a table if you don't have access to a calculator.

anonymous · Answer

Oh kay cool great! Everything was correct after submission :^)