A random sample of n1 = 14 winter days in Denver gave a sample mean pollution index x1 = 43. Previous studies show that ?1 = 13. For Englewood (a suburb of Denver), a random sample of n2 = 10 winter days gave a sample mean pollution index of x2 = 35. Previous studies show that ?2 = 11. Assume the pollution index is normally distributed in both Englewood and Denver. Do these data indicate that the mean population pollution index of Englewood is different (either way) from that of Denver in the winter? Use a 1% level of significance. what is the sample test statistic find or estimate p value
A random sample of n1 = 14 winter days in Denver gave a sample
what is the sample test statistic
find or estimate p value
We have given that
Sample sizes n1=14 , n2= 10
Sample means xbar1=43, xbar2=35
And standard deviation s1=13 ,s2=11
level of significance =alpha = 0.01
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