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I want to Compare two 10-year periods In California for the number of high Smog day’s, The two periods are 1975 to 1985 and 2005 to 2015. 1975 to 1985 the day are as follows 230, 2 25, 235, 2 25, 235, 235, 1 85, 186, 225 and 200 days. 2005 to 2015 the days are 130, 125, 120, 135, 130, 120, 140, 120 140, 120, 125 and lisix days per year. I want to find out which 10-year period has a lower mean of smog days. //1 = mean high smos days 1975 to 1985 12 = nean high smos day 2005 to 2015 HO: /1 – 12 = 0 Is my hypothesis set up correct?

I want to Compare two 10-year periods
In California for the number of high
Smog day’s, The two periods are
1975 to 1985 and 2005 to 2015.
1975 to 1985 the day are as follows
230, 2 25, 235, 2 25, 235, 235, 1 85, 186, 225
and 200 days. 2005 to 2015 the days
are 130, 125, 120, 135, 130, 120, 140, 120
140, 120, 125 and lisix days per year.
I want to find out which 10-year
period has a lower mean of smog days.
//1 = mean high smos days 1975 to 1985
12 = nean high smos day 2005 to 2015
HO: /1 – 12 = 0
Is my hypothesis set up correct?

 
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