Which of the following situation uses descriptive statistics? a. From the past figures, MITIS population will reach 2000 in the year 2025. b. After tossing a coin and getting a head, it will be tail on the next toss. c. There is a relationship between smoking cigarettes and getting emphysema d. The average age of students in statistics class is 17 years. A researcher wants to determine the mean income of adults in a particular state. She decides to tak a random sample of 1525 citizens with a driver's license from the registry maintained by the Department of Motor Vehicles in that state, and record their incomes. Which one of the following statements is NOT correct? a. People who had recently moved from another state may not yet be included in the DMV registry. b. The sample would be biased since some people without a license may be too poor to own a car and others may choose to use public transportation c. Taking a bigger sample from the registry would solve any problems with possible bias d. The sample would not be representative of adults, since teenagers would be included in the sample. In which group can the whole population be used as the sample? a. All former and present students of a University b. All students in a class E. All people in a country d All grade 6 students in a region

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Compound Probability

Compound probability can be defined as the probability of the two events which are independent. It can be defined as the multiplication of the probability of two events that are not dependent. 

Tree diagram

Probability theory is a branch of mathematics that deals with the subject of probability. Although there are many different concepts of probability, probability theory expresses the definition mathematically through a series of axioms. Usually, these axioms express probability in terms of a probability space, which assigns a measure with values ranging from 0 to 1 to a set of outcomes known as the sample space. An event is a subset of these outcomes that is described. 

Conditional Probability

By definition, the term probability is expressed as a part of mathematics where the chance of an event that may either occur or not is evaluated and expressed in numerical terms. The range of the value within which probability can be expressed is between 0 and 1. The higher the chance of an event occurring, the closer is its value to be 1. If the probability of an event is 1, it means that the event will happen under all considered circumstances. Similarly, if the probability is exactly 0, then no matter the situation, the event will never occur.