hawln M SS don Problem 18 11. In a class of 40 students, there are 1½ times as many boys as girls. What fraction of the class is girls? 12,A board 80 inches long is cut into two pieces. One piece is 4 times as long as the other. Find the length of the longer piece. 13/In a coin collection, the number of quarters is 3 times the number of dimes. there are 68 coins in all, what fraction of the coins are dimes? 14. In a certain week, the Verizon store sold 84 cell phones. If the ratio of i- phones to Android phones was 4 to 3, how many i-phones were sold? 15.A math test contains 54 problems on Arithmetic and Algebra. If there are twice as many arithmetic problems as algebra problems, how many algebra problems were there? and * Gv n thire arl 1.5 times as many boyr ai gii Xt y= 40 Xtl.5X 40 Tntittort,3 of gif) lb2 thtn It y: # of louys 2.5 x 40 X - 16 *1 S0h Will pitsent in thn Ciass y-1.5x broken? 25. 11:(ch (0 Hoa ( pnoln bac bdaud a 1ol len adotslo. .0S Jedaud a 052 ol lise esiqgs 042 foe Sso yoib gel esvioos id ysnom duwod Jadaudaad bas Jodard s 8:2 ollsa esiqqs1loeweddriol05Or2 zovisos1 I SIolliae anoino to fodaud sb doum woid Jadaud Tol Ilan ooq 0 10001 adaud s 0 12 09 TO) 0341 D20 0:1 01 bii 0PX0 00S:09Xe w30i iG bror l i101 ud 0% oo eT 210 0 ddNlbu Yope 41 0VF Lave CO4

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.