Lauren is working two summer jobs, lifeguarding and washing cars. She can work no more than 9 hours altogether between both jobs in a given week. Write an inequality that would represent the possible values for the number of hours lifeguarding, l, and the number of hours washing cars, w, that Lauren can work in a given week.

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calcul…