[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-473287-105":59,"doc-detail-473287-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","math-30-2-probability-lesson-4-practice-questions","Math 30-2 Probability Lesson 4 - Practice Questions","","Practice questions for a Grade 30-2 Probability Lesson 4 set, focusing on sequential probability with and without replacement, conditional probability, probability trees, and basic event algebra. Problems include drawing chocolates from categories, selecting colored balls from an urn, computing multi-draw card probabilities, combining survey-based proportions, and using a two-stage goalie/team scenario. Additional tasks cover passing two exams with conditional changes and probability with sets of whole numbers and divisibility/evenness constraints.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":20,"@type":76,"position":81},"https://docshare.wps.com/document/exam/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/math-30-2-probability-lesson-4-practice-questions/473287/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/math-30-2-probability-lesson-4-practice-questions/473287.png","ImageObject",300,407,{"name":92,"@type":93},"Oliver","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-08","2026-09-30",true,{"@type":102,"interactionType":103,"userInteractionCount":29},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"How do you calculate the probability for selecting 1 Snickers and then 1 Twix without replacement?","Question",{"text":112,"@type":113},"Compute the probability of the first draw (Snickers), then multiply by the probability of the second draw (Twix) after the remaining total count decreases.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"For the green then non-green balls problem, why do you multiply two probabilities?",{"text":117,"@type":113},"Because the draws are sequential without replacement: you find the probability of drawing green first, then multiply by the probability that the second draw is non-green given the updated urn size.",{"name":119,"@type":110,"acceptedAnswer":120},"How is conditional probability used in the events A and B question?",{"text":121,"@type":113},"Use P(B|A) = P(A and B) / P(A), applying the given values for P(A) and the joint probability.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},473287,1790826530,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":19,"category_name":20,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":29,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":144,"read_time":145},8796095461610,"https://ap-avatar.wpscdn.com/davatar_276721f389ce27ea32af1340a28f341c","Math 30-2 Probability Lesson 4 Practice Questions [Solutions at the end] Use the following information to answer the first question.  \nSam and Betty keep a bag of mini-chocolate bars around the house to give to their visiting grandchildren. At the moment, there are three varieties; 16 Snickers, 12 Twix and 9 Mars Bars. Since Jake, their grandson, cannot decide which type he would like, he reaches in the bag and pulls out a treat one at a time.  \n1. The probability that Jake selects 1 Snickers and then 1 Twix, to the nearest thousandth, is  \nA) 0.144 B) 0.140 C) 0.766 D) 0.757  \nUse the following information to answer the next question.  \nA box contains 5 red balls, 4 green balls, 2 blue balls and 1 purple ball. Jaxon randomly selects 2 balls one after the other, without replacement.  \n2. The probability that Jaxon selects a green ball, and then a ball that is not green is  \n 32   32   8   8   \nA) B) C) D)  \n144 120 14 33  \n3. The probability of drawing 3 red cards in a row, without replacement, from a standard deck of cards, to the nearest thousandth, is    \n4. According to a survey, 73% of Albertans own a home. Of these people, it is estimated that 78% have a garage. Determine, to the nearest percent, the probability that any Albertan you met during the month in which the survey was conducted would have a garage.  \nUse the Probability Tree Diagram to answer the next question.  \nSuppose there are a number of red and blue balls in a bag. The fractions on the diagram indicate probabilities of particular events. There are two draws.  \n5. a) The number of red balls in the bag is    \nb) How many balls are in the bag on the second draw?    \nc) Are the balls replaced after the first draw?    \nd) To the nearest hundredth, the probability of drawing 2 blue balls is   Use the following information to answer the next question.  \nYou are one of two goalies on a hockey team. The team has two co-head coaches, Sam and Alex. There is a big game today.  \n􀁸 With coach Sam being in charge, you have a 0.5 chance of being in net.  \n􀁸 With coach Alex being in charge, you have a 0.3 chance of being in net.  \n􀁸 Sam is coach more often; about 6 out of every 10 games (probability of 0 .6)  \nThe first part of the probability tree diagram is shown below.  \n6. Determine the probability that you will not be the goalie today.  \nA) 0.30 B) 0.50 C) 0.58 D) 0.72  \nUse the following information to answer the next question.  \nSuppose that when you write your first Math exam, the probability of passing is 0.7.  \n􀁸 If you pass the first test, the probability of passing the second test is 0.8.  \n􀁸 If you fail the first test, the probability of passing the second test is 0.6.  \n7. You passed the second test. The probability you passed the first test, to the nearest hundredth, is    \nUse the following information to answer the next question.  \nThe diagram shows the set whole numbers 1-20 inclusive. Each number will be written on a ball and all of the balls will be placed in a box.  \n􀁸 Let D = numbers divisible by 3  \n􀁸 Let E = even numbers  \n8. You are asked to choose one ball at random from the box. P((D 􀀛 E)’) can be written in the form K20 . The value of K is ____ .  \n3   3   \n9. Events A and B are conditional. If P(A) = and P(A and B) = , determine  \n5 10  \nP(B│A) .  \n10. Based on previous performance, the probability of a particular volleyball team winning any match is 25 . What is the probability that the team will win one game and lose one game out of the next two games? Explain.  \nMath 30-2 Probability Lesson 4 Practice QuestionsSolutions Use the following information to answer the first question.  \nSam and Betty keep a bag of mini-chocolate bars around the house to give to their visiting grandchildren. At the moment, there are three varieties; 16 Snickers, 12 Twix and 9 Mars Bars. Since Jake, their grandson, cannot decide which type he would like, he reaches in the bag and pulls out a treat one at a time.  \n1. The probability that Jake selects 1 Snickers and","cbCaiiYhtJ6yqRE8","https://ap.wps.com/l/cbCaiiYhtJ6yqRE8","pdf",398055,13,"English","# Question 1\n# Question 2\n# Question 3\n# Question 4\n# Question 5\n# Question 6\n# Question 7\n# Question 8\n# Question 9\n# Question 10\n# Solutions","[{\"question\":\"How do you calculate the probability for selecting 1 Snickers and then 1 Twix without replacement?\",\"answer\":\"Compute the probability of the first draw (Snickers), then multiply by the probability of the second draw (Twix) after the remaining total count decreases.\"},{\"question\":\"For the green then non-green balls problem, why do you multiply two probabilities?\",\"answer\":\"Because the draws are sequential without replacement: you find the probability of drawing green first, then multiply by the probability that the second draw is non-green given the updated urn size.\"},{\"question\":\"How is conditional probability used in the events A and B question?\",\"answer\":\"Use P(B|A) = P(A and B) / P(A), applying the given values for P(A) and the joint probability.\"}]","Math 30-2 Probability Lesson 4 - Practice Questions | PDF",1790782213,33]