Ahmad earns 43 dollars per week working part-time at a book store. He makes one dollar more for each book that he sells. The amount, A (in dollars),
that Ahmad earns in a week if he sells o books is given by the following.
A=43+3
How much does Ahmad earn in a week if he sells 23 books?
Idollars
Х
?

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