Histograms (draw) Practice Questions answers Textbook answers, 158. Company A is offering 40 software products and 30 hardware products. answers; Post navigation. Linear graphs: x=a graphs Practice Questions answers Textbook answers, 194. Proof: right angle in a semi-circle Practice Questions answers Textbook answers, 65b. Histograms (find frequency) Practice Questions answers Textbook answers, 159. Triangular numbers Practice Questions answers Textbook answers, 230. Videos, worksheets, 5-a-day and much more We use a simple example to explain conditional probabilities. FDP ordering Practice Questions answers Textbook answers, 132. Two companies A and B are offering 70 and 50 products respectively. Example 2In a group of kids, if one is selected at random the probability that he/she likes oranges is 0.6, the probability that he/she likes oranges AND apples is 0.3. Independent Events Textbook Answers Click here for Answers . 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Hence\( P(H|C) = \dfrac{P(H \; and \; C)}{P(C)} = 0.5 / 0.8 = 0.625\), Example 7A group of 200 Students were asked whether they played football or basketball. Venn ... Venn Diagrams Conditional Probability Hegarty Maths keyboard_arrow_up. Probability With Answer Key - Displaying top 8 worksheets found for this concept.. Linear Programming Practice Questions answers Textbook answers, 368. Probability: basic Practice Questions answers Textbook answers, 246. Decimals: division by decimals Practice Questions answers Textbook answers, 93. Drawing using y=mx+c Practice Questions answers, 188. Scales: reading Practice Questions answers Textbook answers, 285. Probability: not happening Practice Questions answers Textbook answers, 251. GCSE. Proof: same segment Practice Questions answers Textbook answers, 65d. Perimeter: semi-circle Practice Questions answers Textbook answers, 244. Algebra: expanding three brackets Practice Questions answers Textbook answers, 16. 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Number: place value Practice Questions answers Textbook answers, 222a. Among the group, 120 said they played football, 50 said they played basketball and 20 said they played both football and basketball.a) What is the probability that a students selected at random from the group plays football given that he plays basketball?b) What is the probability that a students selected at random from the group plays basketball given that he plays football?c) What is the probability that a students selected at random from the group plays football given that he plays one game only.eval(ez_write_tag([[580,400],'analyzemath_com-large-mobile-banner-2','ezslot_9',701,'0','0']));Solution to Example 7Let event F: students who play football, event B: students who play basketballa)Let us find the following probabilities\( P(F) = 120 / 200 = 0.6 \)\( P(B) = 50/200 = 0.25 \)\( P(F \; and \; B) = 20 / 100 = 0.1 \)\( P(F|B) = \dfrac{P(F \; and \; B)}{P(B)} = 0.1 / 0.25 = 0.4 \)b)\( P(B|F) = \dfrac{P(B \; and \; F)}{P(F)} = 0.1 / 0.6 = 0.17 \)c)Let event O: students who play one game onlyThe number of students who play one game only is\( (120 - 20) + (50 - 20) = 130 \)\( P(O) = 130/200 = 0.65 \)\( P(F \; and \; O) = 100 / 200 = 0.5 \)\( P(F|O) = \dfrac{P(F \; and \; O)}{P(O)} = 0.5 / 0.65 = 0.77 \). 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There is also a formula that can be used for conditional probability: \[P(A~given~B) = \frac{P(A~and~B)}{P(B)} = \frac{\frac{27}{50}}{\frac{37}{50}} = \frac{27}{37}\] previous Gradient of a line Practice Questions answers Textbook answers, 190. Difference between two squares Practice Questions answers Textbook answers, 121. percentages to decimals Practice Questions answers Textbook answers, 122. percentages to fractions Practice Questions answers Textbook answers, 123. decimals to fractions Practice Questions answers Textbook answers, 124. decimals to fractions (calc) Practice Questions answers Textbook answers, 125. decimals to percentages Practice Questions answers Textbook answers, 126. fractions to percentages Practice Questions answers Textbook answers, 127. fractions to decimals Practice Questions answers Textbook answers, 128. fractions to decimals (calc) Practice Questions answers Textbook answers, 129. Independent events Practice Questions answers Textbook answers, 250. 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