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Joe has some money in his bank account he deposits 45$ write an expression that represents the amount of money in joe's account

Find an bif a = {3, 6, 9, 12) and b = {2, 4, 6, 8, 10).

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