The following graph shows an incomplete probability model for who will win any given race. There are no other racers, and exactly one racer wins each race (no ties allowed!). What is the best prediction for the number of times Chen will listen to a classical song?Ĭhoose 1 answer: Close to 160 times but probably not exactly 160 times Manny, Rachelle, and Peg race each other in carts. Chen's Jumble has 4 classical songs, 3 rock songs, and 2 rap songs on it. The Jumble randomly selects a song for the user to listen to.

The table shows the number of feathers Patsy the Peacock sold at each of the 8 festivals this year.īased on this data, what is a reasonable estimate of the probability that Patsy sells fewer than 5 feathers next festival?Ĭhoose 1 answer: 75% Chen has an MP3 player called the Jumble.

The probability of Enzo passing the test is 1/4.Ĭhoose 1 answer: Enzo passes the test. The probability of Felipe passing the test is 0.19. 0.07Ġ.66 Both Felipe and Enzo forgot to study for their science test. Input your answers as fractions or as decimals rounded to the nearest hundredth. Use the observed frequencies to create a probability model for Dalia randomly selecting one rock from her gravel pit. She took a random sample of rocks and counted 58 sedimentary rocks, 213 metamorphic rocks, and 522 igneous rocks.

Khan academy statistics and probability