University:
High School
Course:
High School Algebra
Academic year:

2020
Views:

272

Pages:

2
Author:

Ana Berg

Two-Way ТаЫеs А two-way tаЫе displays the same information as а Venn diagram. One category is represented Ьу the rows and the other category is represented Ьу the columns. The Venn diagram shows the results of а survey in which 80 students were asked whether they play а musical instrument and whether they speak а foreign language. Use the Venn diagram to complete the two-way tаЫе. Then use the two-way tаЬ!е to answer each question \� Play an lnstrument Do Not Play an lnstrument 1 (о '2.() ., ·2-'5 � Speak а Foreign Language Do Not Speak а Foreign Language о? е-1 СсО Ь. How many students speak а foreign language? а. Huw many students play an instrument? . ,/\:,, >lL-•.· /,../! ;_.,, ',·· .. -1\ ,.- , t:? , ( (jfl/� � • .- ,.:.·. ir- ._:( 1,:-,.,,;i'+· ,-, '':.'··,' (, 1 ',' d. How many students do not play an instrument and do с. How many students play an instrument and not speak а foreign language? speak а foreign language? 1Ь чь --у� L-,\ 1 Total Total ( d() rJo4 h") е. How many students play an instrument and do not speak а foreign language? 2,,,-5· Now, let's say one student is selected at random from the 80 students who took the survey. Find the probabllity that the student g. speaks а foreign language. f. plays an iпstгшпе 1t. ert ( , 1 с, '· (1 r' Ч 1 - .' с:. ·;r- / - - • 1 1 1 � 1 ( :) / -�....J i. does not play an instrument and does поt speak а foreign language. h. plays ап instrumeпt and speaks а foreigп language. { ;с, q /;i[ '/;:; ! j j. plays an instrument and does not speak а foreign language, / с; Conditional Probabllity: 1 � е_ i· '\. # : .' , \ ( ' �"\ "! r'\ ( ( .J_)' \ (ь (; / (,, � 1 '.' f\' А / g) � Р (А 1 Д.иl'll'f 13 5;,,,,,,,;,, б - {с Common erroг: M,.,l11?l ; I ,\ 'i "") ( : ,. ( Or I