Daniel is working two summer jobs, making $8 per hour babysitting and making $15
per hour lifeguarding. In a given week, he can work a maximum of 18 total hours and
must earn no less than $200. If Daniel worked 3 hours babysitting, determine the
minimum number of whole hours lifeguarding that he must work to meet his
requirements. If there are no possible solutions, submit an empty answer,

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