Write a quadratic equation with 7 and " ( as its roots. Write the equation in the

form a�" + bx + c = 0, where a, b, and c are integers.
A 5�" – 37x + 14 = 0 C 5�" + 37x + 14 = 0
B 2�" + 9x - 35 = 0 D 2�" – 9x – 35 = 0

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