Binomial Dist.
26 students are taking a test. From previous years it is known that the probablity of a given student passing the test is 79%. The probability of exactly 20 students passing the test is this number to the nearest percent.
What is 18%?
A normal distribution has a mean of 8 and a standard deviation of 2. The value that is 2 positive standard deviations away from the mean is this.
What is 12?
The formula for converting raw scores to z-scores is this.
What is z = (x - m)/sd?
p(x<3.2) = .50, the mean of this distribution is this number.
What is 3.2?
26 students are taking a test. From previous years it is known that the probablity of a given student passing the test is 79%. The probability of at least 20 students passing the test is this number to the nearest percent.
What is 70%?
A normal distribution has a mean of 7 and a standard deviation of 2.5. The z–score that corresponds to a raw score of 10 for this distribution is this.
What is 1.2?
p(x < 3.2) = .478. The standard deviation of this distribution is .5. The mean of this distribution is this number to the nearest hundredth.
What is 3.23?
26 students are taking a test. From previous years it is known that the probablity of a given student passing the test is 79%. The probability of between 15 and 20 students, inclusive, passing the test is this number to the nearest percent.
What is 47%?
In a standard normal distribution, we use z-scores to find percentages of the data that fall within a certain range. One z-score represents this amount of standard deviations from the mean.
What is one?
A normal distribution has a mean of 84 and a standard deviation of 4.52. The percentage of the data of this distribution that falls below 75 is this number to the nearest hundredth of a percent.
What is 2.32%?
p(x < 3.2) = .03 and p(x > 5.7) = .77. The mean and standard deviation of this distribution are these numbers to the nearest hundredth.
What is m = 7.32 and sd = 2.19
(2x + 3^2)^9. The coefficient of x^12 is this number.
What is 145152?
A normal distribution has a mean of 24 and a standard deviation of 6. 68% of the values of this distribution fall between what two data values?
What is 18 and 30?
A data value that is an element of a non-standard distribution is called this.
What is a raw score?
The socres on a recent math test were normally distributed with a mean of 84% with a standard deviation of 4.52%. The percent of the students who scored between 70% and 90% is this number to the nearest percent.
What is 91%?
p(x < 12) = .345 and p(x > 27) = .321. The mean and standard deviation of this distribution is this number to the nearest hundredth.
What is m =18.93 and sd = 17.37?
(3/x^2 - 2x^3) ^8. The term in x^9 is this.
What is -48384 x ^9?
A normal distribution has a mean of 100 and a standard deviation of 10. The percentage of data values that fall between the values of 70 and 90 is this.
What is 15.85?
The reason that we use the standard normal curve by converting raw scores to z-scores is this.
What is "So that we can easily determine what percentage of our data falls within a specific range that is not exactly 1, 2, or 3 standard deviations away from the mean"?
The socres on a recent math test were normally distributed with a mean of 84% with a standard deviation of 4.52%. The percent of the students who scored below 70% and above 90% is this number to the nearest hundredth percent.
What is 9.32%?
A math student correctly found the zeros of a quadratic equation like this: 6x^2 +x - 1 = 0
x^2 + x - 6 = 0
(x + 3) (x - 2) = 0
(x + 3/6) (x - 2/6) = 0
x = -1/2 , x = 1/3
This method of solving will only work when this occurs.
What is the value of c must equal +/- 1?