Answer:
Step-by-step explanation:
For this case we have the following data:
represent the random sample 1 selected
represent the proportion of success for the sample 1 selected
represent the random sample 2 selected
represent the proportion of success for the sample 2 selected
We know for this case that we can use the normal approximation since for both cases we have:
We have the randomization condition and we assume that the two samples are <10% of the entire population size.
So then we can use the following distribution for the proportions:
For this case we want to find the distribution for the difference of these two proportions and we have this:
So then the dtandard deviation would be given by:
Answer: it gets smaller, 13 times smaller
Step-by-step explanation:
Size of the figure/13
Answer:
4 2/3 units cubed
Step-by-step explanation:
Since they didn't give the 3rd side length, but they gave us one side's area we can just do 3 1/3 times 1 2/5 which gives us 14/3 which then is reduced to 4 2/3 units cubed.
Oh and btw I see that's a khan academy question.
Answer:
32
Step-by-step explanation:
5(4)-2(-6) = 20 plus 12 = 32