Statistics - math problems
Number of problems found: 326
- Find the mean
Find the number between 13 and 29.
- AVG of INT
What is the average of the integers from 9 throuht 52 inclusive?
- Insert 6
Insert four harmonic means between 3/7 and 3/19
- Insert AP member
Insert arithmetic means between 75 and 180.
- In center
What number lies in the center between a quarter of a fifth and a half of a third on the number axis?
- Find 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.
- Insert 7
Insert five harmonic means between 3 and 18
- Arithmetic average
The arithmetic mean of the five numbers is exactly 8. The sum of these four numbers is 30. What is the fifth number?
We throw five times the dice. What is the probability that six fits exactly twice?
- Coordinates of a centroind
Let’s A = [3, 2, 0], B = [1, -2, 4] and C = [1, 1, 1] be 3 points in space. Calculate the coordinates of the centroid of △ABC (the intersection of the medians).
- Harmonic series
Insert four members between 5/3 and 5/11 to form harmonic series (means).
- Five numbers in ratio
Five integers are in the ratio 1: 2: 3: 4: 5. Their arithmetic mean is 12. Determine the smallest of these numbers.
- Father and sons
Father is 27 and his sons 2 and one year. In how many years will his sons sum up to half his age?
The drug successfully treats 90% of cases. Calculate the probability that he will cure at least 18 patients out of 20?
Ondra digs the bed in 20 minutes. Cuba in 30 minutes. For how long do they dig together?
252 miles a week fills up twice a week. Each fill is 38 gallons. What is the gas mileage of the car?
- The midpoint
The midpoint of (2, 5) and (8, y) is (5, -1). Find the line equation in slope-intercept form.
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?
- Working together
One worker performs work in 3 days, the second in 5 days. How much do they work together?
Calculate the coordinates of the center of gravity T [x, y] of triangle ABC; A[11,4] B[13,-7] C[-17,-18].
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