Cases 1 9 Lyme Disease Lyme disease is caused by a bacteria called Borrelia burgdorferi and is spread through the bite of an infected black legged tick generally found in woods and grassy areas There were 213 515 confirmed cases reported to the Centers for Disease Control CDC between 2001 and 2010 and these are bro ken down by age and sex in Figure 1 9 25 000 20 000 15 000 10 000 5 000 0 Confirmed Lyme disease cases by age and sex United States 2001 10 Male Female 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 Age years Reported cases of Lyme disease are most common among boys aged 5 9 Here is how Figure 1 9 relates to what we have been studying The indi viduals are the 213 515 people with confirmed cases and two of the variables measured on each individual are sex and age Considering males and females separately we could draw a histogram of the variable age using class intervals 0 to 5 years old 5 to 10 years old and so forth Look at the leftmost two pars in Figure 1 9 The light blue bar shows that approximately 9000 of the nales were between 0 and 5 years old and the dark blue bar shows slightly fewer emales were in this age range If we were to take all the light blue bars and put hem side by side we would have the histogram of age for males using the class ntervals stated Similarly the dark blue bars show females Because we are try ng to display both histograms in the same graph the bars for males and females ithin each class interval have been placed alongside each other for ease of omparison with the bars for different class intervals separated by small spaces Describe the main features of the distribution of age for males Why would describing this distribution in terms of only the center and vari ability be misleading Suppose that different age groups of males spend differing amounts of time outdoors How could this fact be used to explain the pattern that you found in part a Be