Statistics - math word problems
Number of problems found: 303
The sum of all deviations from the arithmetic mean of the numerical sequence 4, 6, 51, 77, 90, 93, 95, 109, 113, 117 is:
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
Harmonic means of 4 and 8.
- Harmonic 4
Harmonic mean of -6 and 5.
Find number on thenumber line that has same distance from this numbers:
- Harmonic mean
Harmonic means of 6 and 12
Average of 5 numbers is 108. What is its sum?
We throw five times the dice. What is the probability that six fits exactly twice?
- Insert 7
Insert five harmonic means between 3 and 18
- Insert AP member
Insert arithmetic means between 75 and 180.
- HP - harmonic progression
Determine the 10th term of the harmonic progression 6,4,3,…
The arithmetic mean of the two numbers is 71.7. One number is 5. Calculate the second number.
- Find the mean
Find the number between 13 and 29.
We throw 10 times a play dice, what is the probability that the six will fall exactly 4 times?
The drug successfully treats 90% of cases. Calculate the probability that he will cure at least 18 patients out of 20?
What is the reciprocal of the sum of the reciprocals of 4 and 9?
- In center
What number lies in the center between a quarter of a fifth and a half of a third on the number axis?
- Insert 6
Insert four harmonic means between 3/7 and 3/19
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
FM=8a+1, FG=42, a=? Point M is the midpoint of FG. Find unknown a.
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