The percent of data within one standard deviation of the mean
What is 68%
200
How many different 4 person groups can be formed from 12 students?
What is 12 n C r 4 or 495
200
log base 9 (x) = 3/2
What is 27
200
What is range of -x^2 +2
What is ( negative infinity, 2]
200
I invest $35,000 for 10 years at 4.6%. I have _______ money after 10 years
What is $55442.59
200
In a normal distribution, 68% of the scores fall between 72 and 86, and the mean is 79. The standard deviation is?
What is 7
300
The expression 10! / (3!4!) is equilant to?
What is 25200
300
log (base 3) (x) = 4
What is 81
300
the solution set of (x^2)-5x = 0?
What is {0, 5}
300
I invest $10,000 at 4.75%. When will account double?
What is 42.1 years?
300
On a standardized test, the mean is 68 and the standard deviation is 4.5. What is the best approximation of the percentage of scores that will fall in the range 59-77
What is 95%
400
What is the mean between (20x + 3) and (6x+15)?
What is 13x + 9
400
The solution of 3 ^(x+1) = 12
What is ((log12)/(log3))-1
400
f(x) = (x+3)/(x-1), then f(y+1) is equals?
What is (y+4)/(y)
400
Solve for the positive value of x: (x^2) - 64 = 0
What is 8
400
Rick scores 122, 138, 130, 98, 102, and 124. His mean score is
What is 119
500
The scores 18, 20, 25, 11, and x have a mean of 19, what is the value of x?
What is 21
500
log (base x) 4 + log (base x) 9 = 2, x is ?
What is 6
500
f(x) = [(16x)^0] + x ^(2/3), find f(65)
What is 17.17
500
What is the y-intercept of the parabola whose equation is y = (x^2) + 6x +7
What is 7
500
On a stndardizd test, Bill scores a 84, exactly one standard deviation above the mean. If the standard deviation is 9, what is the mean?