Which of the expressions are equivalent to the one below? Check all that apply.
(8+2) x 4 + 2

(Multiple choice !!)

A. (8 x 4) + (2 • 4) + 2
B. 8 + (2 x 4) + 2
C. (8 + 2) x (4 + 2)
D. 8 x 4 + 2 + 2

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