Facts
In a Normal Model, 50% of the data falls below this.
What is the mean?
The percentile of z = 1.15
What is .8749?
A normal model has a mean = 230 and a standard deviation = 15. Find the following: P(x < 210): the percent chance a data value is less than 210.
What is .0918?
A normal distribution has a mean = 17.1 and a standard deviation = 4. This x value represents cutoff for the bottom 10%.
What is 11.98?
The shape of the Normal Model is this.
What is a bell-curve. OR Symmetric and Unimodal.
The percent of data above z=0.32
What is .3745?
A normal model has a mean = 135 and a standard deviation = 10.4. Find the following : P(x > 146): the percent chance a data value is greater than 146.
What is 0.1446?
A normal model has a mean = 11.4 and a standard deviation = 3. This x value represents the values above the top 10%.
What is 15.24?
These percentages roughly represent the percent of the data values that fall within one, two, and three standard deviations from the mean of a normal distribution.
What is 68% - 95% - 99.7%?
The percent of data above z = -2.81
What is .9975?
A normal model has a mean = 86 and a standard deviation = 5. Find the following: P(85 < x < 95): the percent chance a data value is between 85 and 95.
What is 0.5434?
The total area under the curve of a normal distribution represents this percent of the data.
What is 100%?
The percent of data between z = -1.00 and z = 0.50.
What is .5328?
The mean number of Coney Island hot dogs that Mike can eat in one sitting is 5.8 with a standard deviation of 1.1, and follows a normal model. This is the probability he eats more than 8 hot dogs.
What is .0228?
The mean in the Standard Normal Model is always equal to ____, and the standard deviation is always equal to ____.
What is 0 and 1?
The percent of data within 1.25 standard deviations of data.
What is .2113?
In 2015, the mean math SAT score was a 511 with a SD of 120, and follows a normal model. This is the probability of scoring between a 720 and a 780.
What is .0283?