Define Normal
The mean of the standard normal distribution is...
What is 0
Given a mean of 86 and a standard deviation of 5, find the indicated probability: P(x>75)
0.9861 or 98.61%
Find the z-score that corresponds to the cumulative area of 0.0918
-1.33
What z-score is considered unusual?
More than 2
What color rose represents friendship?
Yellow
Name three characteristics of a Normal Distribution
1.It is symmetrical about the mean
2. The mean, median and mode are equal
3. The total area under the curve is equal to 1
4. it is bell-shaped
5. It approaches but never touches the X axis
Given a mean of 219 and a standard deviation of 41.6, find the following probability: p(200<x<239)
0.3616 or 36.16%
Find the z-score that has 11.9% of the distribution's area to its right
1.18
Find the z-score that corresponds to the 2nd percentile
-2.05
Cupid
Find the area under the standard normal curve to the left of z = 1.36
0.9131
The number of corgi puppies on a corgi puppy farm are normally distributed with a mean of 69.6 corgis and a standard deviation of 3.0 corgis. Find the probability that a corgi farm will have more than 72 corgis.
0.2119 or 21.19%
Find the z-score for which 5% of the distribution's area lies between -z and z
0.06 and -0.06
The mean height of women is 64.2 with a standard deviation of 2.9. What height corresponds to a z-score of 2.4?
71.16
Who receives the most Valentines? Kids, Moms, Teachers, or wives?
Teachers
Fine the area under the Normal curve between z = -2.33 and z = 2.33
0.9802
The amount of wood that a woodchuck chucks if a wood chuck could chuck wood is normally distributed with a mean of 25 woods and a standard deviation of 3 woods. Find the probability that the woodchuck would chuck between 23 and 25 woods.
0.2486 or 24.86% chance that a woodchuck would chuck 23 to 25 woods if a woodchuck could chuck wood
In a survey of men in the United States, the mean height was 69.6 inches with a standard deviation of 3.0 inches. What height represents the 90th percentile
73.44 inches
The number of eggs a female platypus lays during its lifetime is normally distributed, with a mean of 800 eggs and a standard deviation of 100 eggs. What percentage of platypii lay less than 650 eggs in it's life?
6.7 percent
What is the most popular gift on Valentines Day?
Candy
Find the area under the normal curve to the left of z = -1.96 or to the right of z = 1.96
0.05
The number of shells that Sally's sell by the sea shore is normally distributed with a mean of 100 sea shells sold by the sea shore and an standard deviation of 12 sea shells sold by the sea shore. What percent of Sally's sell more than 125 sea shells by the sea shore?
1.88% of Sally's sell more than 125 sea shells by the sea shore.
The weights of the contents of a cereal box are normally distributed with a mean weight of 20 ounces and a standard deviation of 0.07 ounces. Boxes in the lower 5% do not meet the minimum weight requirements and must be repackaged. What is the minimum weight requirement for a cereal box?
19.88 ounces
The mean height of little green men on Pluto (They still think it's a planet) is 69.6 cm with a standard deviation of 3.0 cm. What is the height of men with a z-score of -3?
60.6
What does an "x" stand for on a Valentines Day card?
Kisses