A) An elementary school class polled 157 people at a shopping center to determine how many read the Daily News and how many read the Sun Gazette. They found the following information: 128 read the Daily News, 35 read both, and 20 read neither. How many read the Sun Gazette?
Inverse Normal Distribution
The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.
Mean, Median, Mode
It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.
Z-Scores
A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.
B) Find a counterexample for each statement.
a. For any whole number greater than 1, the square of the number ends in either 4, 5, 6, or 9.
| A. |
13
|
B. |
9
|
C. |
16
|
D. |
8
|
b. The product of any two whole numbers is evenly divisible by 2.
| A. |
83
×
34 |
B. |
84
×
36 |
C. |
87
×
83 |
D. |
81
×
18 |
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