stats

posted by .

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

  • stats -

    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.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math

    Mandy runs 4km in 18min. She plans to run in a 15km race. How long will it take her to complete the race?
  2. Math

    Having trouble knowing where to start with this one: A maker of tools claims the average amount of time it takes to assemble a table saw is 50 mins with a standard deviation of 40 mins. What is the probability that the sample mean …
  3. Math

    Lawrence records the number of minutes he reads each day show below Day 1: 75 mins Day 2: 30 mins Day 3: 25 mins Day 4: 50 mins Day 5: 80 mins How many minutes must Lawrence read on the sixth dat of have mean of 55 minutes read for …
  4. Math

    A ferris wheel makes one rotation in 15 minutes. Find your car's location and the angle of rotation after: 3 mins., 5 mins., 9 mins., 12 mins. The diameter of the wheel is 328 ft. and the height, with the base, is 369 ft.
  5. physics

    A ferris wheel makes one rotation in 15 minutes. Find your car's location and the angle of rotation after: 3 mins., 5 mins., 9 mins., 12 mins. The diameter of the wheel is 328 ft. and the height, with the base, is 369 ft.
  6. Physics

    Here's the question again that I am trying to get help with because I can't figure it out and I got one answer, but I really couldn't understand it. Help please! A ferris wheel makes one rotation in 15 minutes. Find your car's location …
  7. chemistry

    a radioactive material is undergoin nuclear decay. After 40 minutes, 25% of the sample remains. What is the half life of the sample?
  8. math

    Chase spends 20 mins reading,30mins practicing Piano 15mins cleaning and 40 mins doing his Homework chase is busy for 105 mins what fraction of the time does he spend cleaning?
  9. Algebra

    An artist paints t shirts. It takes 15 mins to set up and 40 mins to clean up. Once it is set up it takes the artist 12 mins to paint the shirt. What would an equation be for how many shirts he makes in 127 mins?
  10. Math

    School is 2 miles from home along a straight road. The table shows your distance from home as you walk home at a constant rate. Time(mins): 10-20-30 Distnce(mi)1.5-1-0.5 1)Is the relationship in the table proportional?

More Similar Questions