Statistics - math word problems

Number of problems found: 303

  • Center
    triangle_axis Calculate the coordinates of the center of gravity T [x, y] of triangle ABC; A[11,4] B[13,-7] C[-17,-18].
  • Insert 5
    sequence_geo_1 Insert five harmonic means between 1/2 and 1/26
  • Family
    family_32 94 boys are born per 100 girls. Determine the probability that there are two boys in a randomly selected family with three children.
  • Harmonic series
    mean_normal Insert four members between 5/3 and 5/11 to form harmonic series (means).
  • The midpoint
    lines The midpoint of (2, 5) and (8, y) is (5, -1). Find the line equation in slope-intercept form.
  • Flowerbed
    flowers_9 Ondra digs the bed in 20 minutes. Cuba in 30 minutes. For how long do they dig together?
  • Convalescent homes
    hotel-montfort-tatry-2 In 270 convalescent homes, 94,270 vacationers spent part of the holiday a year. On average, how many vacationers per convalescent home?
  • MG=7x-15,
    segment_6 MG=7x-15, FG=33, x=? Point M is the midpoint of FG. Find unknown x.
  • AVG of INT
    seq_moon What is the average of the integers from 9 throuht 52 inclusive?
  • Working together
    workers_49 One worker performs work in 3 days, the second in 5 days. How much do they work together?
  • Distance of numbers
    numbers2_17 Which number has the same distance from the numbers -5.65 and 7.25 on the numerical axis?
  • Records
    binomial_1 Records indicate 90% error-free. If 8 records are randomly selected, what is the probability that at least 2 records have no errors?
  • MPG
    mpg 252 miles a week fills up twice a week. Each fill is 38 gallons. What is gas mileage of the car?
  • Seeds
    mrkva2 The germination of seeds of a certain species of carrot is 96%. What is the probability that at least 25 seeds out of 30 will germinate?
  • The sum
    seq_sum The sum of the first 10 members of the arithmetic sequence is 120. What will be the sum if the difference is reduced by 2?
  • Playing cards
    binomial_1 From 32 playing cards containing 8 red cards, we choose 4 cards. What is the probability that just 2 will be red?
  • 5 people
    penize_49 Five people have $122000 each, and one person has $539000. How much should each person (equally) pay?
  • Find midpoint
    midpoint FM=5y+13, MG=5-3y, FG=? M is the midpoint of FG. Use the given information to find the missing measure or value.
  • Statistics quiz
    normal_d_1 Fill in the missing word 1. in a data set, the mean, median and mode are measured of ________________ 2. "The manipulation of variables under controlled conditions"is the data collection method known as______________ 3. in a normal distribution, the area
  • Harmonic mean
    means_math If x, y, z form a harmonic progression, then y is the harmonic mean of x and z. Find the harmonic mean of the numbers 6 and 5.

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