I have 11 days left to finish this class otherwise I can't graduate with my class, and move out of state to see my mom. thank yo
u in advance.
I can only post so many screenshots, I will repost the other half after this. I even asked my Study Hall teacher and she couldnt remember how to do these.
I can only post so many screenshots, I will repost the other half after this. I even asked my Study Hall teacher and she couldnt remember how to do these.
1 answer:
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Answer:
Step-by-step explanation:
Downtown Store North Mall Store
Sample size n 25 20
Sample mean $9 $8
Sample standard deviation s $2 $1
Standard error of difference of means =
Standard error of difference of means =
Standard error of difference of means =
Degree of freedom =
Degree of freedom =
Degree of freedom =36
So, z value at 95% confidence interval and 36 degree of freedom = 2.0280
Confidence interval =
Confidence interval =
Confidence interval =
Hence Option A is true
Confidence interval is