What is the z-score that divides the bottom 90% from the top 10% in a standard normal distribution?

To find the z-score that separates the bottom 90% from the top 10% in a standard normal distribution, we need to locate the value that corresponds to the cumulative probability of 0.90. The standard normal distribution is characterized by a mean of 0 and a standard deviation of 1. The z-score is a statistical measurement … Read more

Which quadrilaterals are classified as types of parallelograms?

Understanding Parallelograms and Their Types In geometry, a parallelogram is a four-sided figure (a quadrilateral) where both pairs of opposite sides are parallel. Because of this property, parallelograms share various characteristics, such as opposite angles being equal and adjacent angles being supplementary. Types of Parallelograms Several quadrilaterals fall under the classification of parallelograms. Here are … Read more