5 2400-2600/660=-.30=z score of 34 week baby 3300-3500/470=-.43=z score of 40 week baby

7 69.6+3=72.6 75-69.6/3=1.8-z score 70-64.1/3.8=1.55-z score The man is more relatively taller.

9 2.3-3.622/.743=-1.779 z score 2.27-3.929/.775=-.-2.14 z score Hernandez had the better year.

11 185.62-186.15/.359=-1.47 112.57-112.8/.131=-1.75 Will Power had the more convincing victory.

13 200+39=239

15 a 15% of the population of males has a head circumference smaller than 41.0 cm. b 90% of the population of females 2 years of age have a waist circumference smaller thn 52.7 cm. c After age 20, men do not experience drastic changes in height.

3 a Skewed right b 0,1,3,6,16

4 a This graph is symmetric b -1,2,5,8,11

5 a 40 b 52 c y, because the 5 number summary is more spread out d Symmetric e Skewed right because the data tails out as the v values grow larger

6 a 16 b 22 c y because the 5 number summary is more spread out d Yes, the variable x has at outlier at 30. e Variable y is skewed left because the data tails out at the left.

9 a The five number summary is 42,50.5, 54.5, 57.5, 69

b

this_data <- c(42, 50, 52, 54,
                55, 57, 61, 64, 43, 
                48, 51, 52, 54, 56, 
                57, 61, 65, 46, 49, 
                51, 54, 55, 56, 57, 
                61, 68, 46, 49, 51, 
                54, 55, 56, 58, 62, 
                69, 47, 50, 51, 54, 
                55, 57, 60, 64)
             
boxplot(this_data, horizontal = T)

c The shape of this distribution is symmetric

10 a The five number summary is 7.2, 9.0, 10.0, 11.2, 16.4 b

this_data <- c(7.2, 9.0, 10.0, 10.3, 11.2, 11.5, 13.8, 7.8, 8.6, 9.1, 9.6, 10.0, 10.3, 11.2, 11.5, 14.4, 7.8, 8.6, 9.1, 9.7, 10.0, 10.3, 11.2, 11.7, 16.4, 7.9, 8.6, 9.2, 9.7, 10.1, 10.7, 11.3, 12.4, 8.1, 8.7, 9.2, 9.9, 10.2, 10.7, 11.3, 12.5, 8.3, 8.8, 9.4, 9.9, 10.3, 10.9, 11.3, 13.6)
             
boxplot(this_data, horizontal = T)

c. The distribution is skewed right