Probability Practice

Probability 
Practice worksheet preview image
Subjects
Math
Grades
7
Language
ENG
Assignments
85 classrooms used this worksheet

A bag contains blue, red, and green marbles. Paola draws a marble from the bag, records its color, and puts the marble back into the bag. Then she repeats the process. The table shows the results of her experiment. Based on the results, which is the best prediction of how many times Paola will draw a blue or red marble in 5,000 trials? about 1,400 times about 3,000 times about 4,4000 times about 3,600 times The probability of selecting a teacher is 6%. The probability of selecting a student is 85%. The probability of selecting a male student is 32%. The probability of selecting a a female student is 45%. If you spin the spinner 1,000 more times, the pointer will land on B about 280 times.If you spin the spinner 1,000 more times, the pointer will land on a vowel about 320 times. true About 16 of the next 50 drink orders will be for water. About 27 of the next 150 drink orders will be for tea. About 100 of the next 200 drink orders will be for lemonade or orange juice. false About 15 of the next 100 drink orders will be for lemonade. About 30 of the next 200 drink orders will be for orange juice About 75 of the next 100 drink orders will be for water or tea. Mr. Johnson timed his students to find out how long it took them, in seconds, to answer each problem on the math test. He randomly selected 10 students to time for two different math problems. Use the results (shown below) to determine whether each statement is true or false. True The probability that a student completes problem 1 in 30 seconds is 20%. The probability that a student completes problem 2 in less than 30 seconds is 100%. The probability that a student completes problem 1 in 27 or 28 seconds is ⅖. False The probability that a student completes problem 1 in less than 30 seconds is 90%. If Mr. Johnson teaches 125 students, approximately 12.5 of them will take 28 seconds to complete problem 1. Bella will roll a number cube, labeled 1 - 6, 300 times.About how many times could Bella expect to roll a number less than 4? 50 100 150 200 Jayla will spin the spinner below 500 times and record each result. About how many times should Jayla expect the spinner to land on a 3? 100 125 200 175

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