Venn Diagrams And Addition Rule Day 6

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Venn Diagrams and Addition RuleDay 6LAST SECTION OF UNIT 8!!!!!!!!!!!!WE MADE IT!!!!!!

Mutually Exclusive (disjoint)AComplement of AWe sometimes calledthe complement of ACAABSee that they don't overlap at alland cannot occur at same time

Visual difference of "and" and "or"AABBEvent A and Event BEvent A or Event Bmeans both at same timemeans one or the other (or both)A BA BSometimes called the intersectionSometimes called the union

Example 1: A survey of 100 seniors where they checked off if they were taking APEnglish or AP Biology34 seniors are not in either AP English or AP Biology5 seniors are taking both AP English and AP Biologyand 44 seniors are taking AP Englisha) Create a Venn Diagram to represent the data, andfill in the counts for each region.

b) Fill in the chart belowRegion in the Venn DiagramIn the intersection oftwo circlesInside circle A, outsideof circle BInside circle B, outsideof circle AOutside of both circlesIn WordsIn symbolsCount

c) How many students are taking AP English?d) How many students are taking AP Biology?e) How many students are taking AP Biology or AP Englishf) How many students are taking AP Biology and AP English?g) How many students are taking AP Biology but not AP English?

Why can't I just add the students taking AP Englishand the students taking AP Biology to figure out"How many students are taking AP English or AP Biology?"

Example 2: In a computer science class, a professor surveyed the86 students about which computer language they are proficient in writingprograms (C or Java).18 students were proficient with both languages16 students were not proficient with either languagesand 52 were proficient with C .a) Create a Venn Diagram and answer the questions below.

b) How many students know Java?c) How many students know C ?d) How many students know Java or C ?e) How many students know Java and C ?f) How many students know Java but not C ?

g) What is the probability that a randomly selected studentknows Java?h) What is the probability that a randomly selected studentknows C ?i) What is the probability that a randomly selected student knowsC or Java?

Example 3:Use the following information to fill in the Venn Diagram below.100 people were asked if they liked Math, Science, or Social Studies.Everyone answered that they liked at least one.56 like Math43 like Science35 like Social Studies18 like Math and Science10 like Science and Social Studies12 like Math and Social Studies6 like all three subjects1.How many people like Math only?2.How many people like Science only?3.How many people like Social Studies only?

From the examples using "or" we found we need to avoid a double-count.Addition Rule of ProbabilityP(A or B) P(A) P(B) - P(A and B)P (A B) P(A) P(B) - P(A B)

Example 4: Find the probabilityA card is pulled from a standard deck.a) P(Ace or Spade)c) P(Jack or Even Number)b) P(Red or King)

A show is selected at randoma) P( Quiz show or on Channel 8)b) P (Drama or Comedy)c) P ( on Channel 10 or drama)

Exit Ticket:Rolling a 10 sided diea) P (5 or greater than 6)c) P(10 or odd number)b) P(less than 6 or even)

Exit Ticket:In a sales effectiveness seminar, a group of sales representativestried two approaches to selling a customer a new automobile:the aggressive approach and the passive approach. For 1160customers, the following record was kept:SaleNo 864741160a) P( Sale or No Sale)b) P( No sale and Aggressive)c) P(Aggressive or Sale)d) P(Passive and No Sale)

Homework:p. 161 #7-9, 17, 18, 21, 25

English or AP Biology 34 seniors are not in either AP English or AP Biology 5 seniors are taking both AP English and AP Biology and 44 seniors are taking AP English a) Create a Venn Diagram to re

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