Statistics - math word problems
Number of problems found: 303
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
Insert five harmonic means between 1/2 and 1/26
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
Insert four members between 5/3 and 5/11 to form harmonic series (means).
- The midpoint
The midpoint of (2, 5) and (8, y) is (5, -1). Find the line equation in slope-intercept form.
Ondra digs the bed in 20 minutes. Cuba in 30 minutes. For how long do they dig together?
- Convalescent homes
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, FG=33, x=? Point M is the midpoint of FG. Find unknown x.
- AVG of INT
What is the average of the integers from 9 throuht 52 inclusive?
- Working together
One worker performs work in 3 days, the second in 5 days. How much do they work together?
- Distance of numbers
Which number has the same distance from the numbers -5.65 and 7.25 on the numerical axis?
Records indicate 90% error-free. If 8 records are randomly selected, what is the probability that at least 2 records have no errors?
252 miles a week fills up twice a week. Each fill is 38 gallons. What is gas mileage of the car?
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
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
From 32 playing cards containing 8 red cards, we choose 4 cards. What is the probability that just 2 will be red?
- 5 people
Five people have $122000 each, and one person has $539000. How much should each person (equally) pay?
- 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.
- Statistics quiz
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
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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