1) (6+3)/(4+7+10+20+6+3)
2) What do you mean by "each of the other two students?" Other than what? According to your table, no student takes longer than 30 minutes to walk to school.
Time taken in mins for student to walk to school.
1-5 mins (4 students)
6-10 mins (7 students)
11-15 mins (10 students)
16-20 mins (20 students)
21-25 mins (6 students)
26-30 mins (3 students)
1)Estimate the probability that a student selected at random will take at least 21 mins to walk to school
2)The time to nearest minute taken by each of 2 other students to walk to school in 33 mins and state the interval in which this would lie
1 answer
1 answer