Statistics - math word problems

Number of problems found: 303

  • Statistics
    lines_globe The sum of all deviations from the arithmetic mean of the numerical sequence 4, 6, 51, 77, 90, 93, 95, 109, 113, 117 is:
  • Sales
    tesco From statistics of sales goods, item A buy 51% of people and item B buys 59% of people. What is the probability that from 10 people buy 2 item A and 8 item B?
  • Harmonic HM example
    mean_normal_1 Harmonic means of 4 and 8.
  • Harmonic 4
    mean_normal_1 Harmonic mean of -6 and 5.
  • Numbers
    number_line Find number on thenumber line that has same distance from this numbers:
  • Harmonic mean
    sequence_geo Harmonic means of 6 and 12
  • Average
    gaussian Average of 5 numbers is 108. What is its sum?
  • Dice
    dices2_4 We throw five times the dice. What is the probability that six fits exactly twice?
  • Insert 7
    seq_1 Insert five harmonic means between 3 and 18
  • Insert AP member
    mean_normal Insert arithmetic means between 75 and 180.
  • HP - harmonic progression
    exp_growth_1 Determine the 10th term of the harmonic progression 6,4,3,…
  • Average
    avg The arithmetic mean of the two numbers is 71.7. One number is 5. Calculate the second number.
  • Find the mean
    mean_normal Find the number between 13 and 29.
  • Dice
    dices2_5 We throw 10 times a play dice, what is the probability that the six will fall exactly 4 times?
  • Doctors
    doktori The drug successfully treats 90% of cases. Calculate the probability that he will cure at least 18 patients out of 20?
  • Reciprocal
    rec_gamma What is the reciprocal of the sum of the reciprocals of 4 and 9?
  • In center
    number_line What number lies in the center between a quarter of a fifth and a half of a third on the number axis?
  • Insert 6
    seq Insert four harmonic means between 3/7 and 3/19
  • Holidaymakers
    chata A total of 94270 holidaymakers spent part of their holiday in 50 hotels a year. On average, how many vacationers are there for one hotel?
  • Midpoint 6
    segment_5 FM=8a+1, FG=42, a=? Point M is the midpoint of FG. Find unknown a.

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