While hanging Christmas lights for neighbors, Lacey counted the number of broken lights on each string.

Use the data to complete the frequency chart below.

Broken lights per string

31 69 73 29 55 58 45 41 32 75 32 90 58 49 89 77 49 47 74 42 59

Fill in the missing numbers.

Broken lights per string
Number of broken lights Number of strings
21-30
31-40
41-50
51-60
61-70
71-80
81-90

Suppose that 3% of all athletes are using the endurance-enhancing hormone epo (you should be able to simply compute the percentage of all athletes that are not using epo). for our purposes, a “positive” test result is one that indicates presence of epo in an athlete’s bloodstream. the probability of a positive result, given the presence of epo is .99. the probability of a negative result, when epo is not present, is .90. what is the probability that a randomly selected athlete tests positive for epo? 0.0297

Jorge wants to determine the enlarged dimensions of a digital photo to be used as wallpaper on his computer screen. the original photo was 800 pixels wide by 600 pixels high. the new photo will be 1,260 pixels wide. what will the new height be?

Travis and paula went to lunch. travis ordered a sandwich for $7.50 and paula ordered a burger for $5.25.after lunch, they left a 15% tip for the waiter. how many money did they spend altogether?