Presentation on theme: "1. What’s the probability that the spinner will land on blue? 2. Samuel has a bowl of fruit containing 3 apples, 2 oranges and 5 pears. If he randomly."— Presentation transcript:
1. What’s the probability that the spinner will land on blue? 2. Samuel has a bowl of fruit containing 3 apples, 2 oranges and 5 pears. If he randomly picks 1 piece of fruit from the bowl, what is the probability it will be a pear or an apple?
Theoretical Probability: - It is how a probability of an event “should” happen. Experimental Probability: - Experimental probability refers to the probability of an event occurring when an experiment was conducted.
There is a bag of blue, green and red chips. There is a 12% possibility of randomly picking a blue chip and a 25% chance of randomly picking a red chip. What is the probability of picking a green chip? Hint: Your three options are green, blue and red. Their probability will add up to 100% Answer: 63%
P(event) = number of times event occurs total number of trials total number of trials You tossed a coin 10 times and recorded heads 3 times and tails 7 times. P(head)= 3/10, 0.3 or 30% A head shows up 3 times out of 10 trials, P(tail) = 7/10, 0.7 or 70% A tail shows up 7 times out of 10 trials HEADS TAIL S
Both probabilities are ratios that compare the number of favorable outcomes to the total number of possible outcomes P(head)= 3/10 or 30% P(tail) = 7/10 or 70% P(head) = 1/2 or 50% P(tail) = 1/2 or 50% All results will add up to 100% every time!
Rick, is concerned about his diet. On any given day, he eats,,,, or servings of fruit and vegetables. The probabilities are given in the table below. On a given day, find the probability that Rick eats: a.Two servings of fruit and vegetables. b. More than two servings of fruit and vegetables. c. At least two servings of fruit and vegetables. Number of Servings Probability 0.28 0.39 + 0.12 = 0.28 + 0.39 + 0.12 = 0.51 0.79
Jon spins the spinner below 20 times and gets the following results: 1. What is the theoretical probability of spinning each letter? 2. What is the experimental probability of spinning each letter? 3. According to the results, which section is closest to it’s theoretical probability ? A C B B A Letter# A7 B9 C4 Spinning a “C” A- 2/5 B- 2/5 C- 1/5 A- 7/20 B- 9/20 C- 4/20