There is a roughly linear relationship between the latitude of major American cities and the average temperature in July. The
correlation for the 12 cities with the largest populations is r = -0.55.24 Interpret this value.

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Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables

Y= a(x-3)squared-1 what is the value of a