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Lesson 1: BASIC CONCEPTS OF PROBABILITY Let's Develop Get a coin and do the coins toss experiment. Record the number of heads or tails that will occur as you toss a coin. Find the probability of a ooin toss. Coin Toss Experiment A B C Toss a coin 10 times. Toss a coin 20 times Toss a coin 30 times No. of heads: No. of heads: No. of heads: No. of tails: No. of tails: No. of tails: Write the number in Write the number in Write the number in fraction form. fraction form. fraction form. Heads: Heads: Heads: Tails: Tails: Tails: Guide Questions: 1. How many times did the heads appear? the tails? 2. Add the fractions for the outcomes of heads. 3. Add the fractions for the outcomes of tails. 4. What do the results tell you? Application 1. A couple is planning to have tree children. What is the probability that: a. all of the children will be girls. b. two of the children will be boys\"? c. at least 2 ofthe children will be girls? d. the couple will have 2 boys at the most? 2. In rolling a pair of dice once, nd the probability that the sum of the results will be: a.5 b.9 c. at least 10 d. at most4 3. A bowl contains 5 red balls, 3 green balls, and 2 white balls. If one ball is chosen at random, a. what is the probability that a red ball will be chosen? b. what is the probability that a green ball will not be chosen? c. what is the probability that a white ball will be chosen? Gabuyo, Y. et.al.. (2016). Statistics and Prababior. Paligsahan1 Quezon City. 4. Laptop buyers can pay their purchases in cash, or using a credit card, or a debit card. The manager observed that 55% of the shoppers used credit cards, 15% paid in cash, and the rest paid with their debit cards. a. Write the sample space. h. Assign the probability of each sample point e. Which approach did you use to assign probabilities lo the sample points? 5. TABIGUE Company manufactures and sells laptops. The manager is keeping track of the number of laptops sold per day and produced the following probabilities below. Based on the data, answer the question that follow. NUMBER OleiAPTOPS Probability that there will be L laptops sold the next day 0 0.15 1 0.17 2 0.20 3 0.25 4 0.15 5 0.12 6 0.06 a. Write the sample space b. What is the probability of selling 5 laptops the next day? c. What is the probability of selling at least 4 laptops the next day? cl. What is the probability of selling 10 laptops the next clay? Gabuyo. Y. et.a]., (2016). Statistics and Probability. Paligsahan1 Quezon City