Learn A bag contains 1 blue marble, 2 red marbles, and 7 yellow marbles. The probability of drawing a blue marble out of the bag is 1 or 10%. How many of what color of 10 marbles must be added to the bag so that the probability of a blue marble being drawn at random from the bag is 90%? Select the correct answer below and fill in the answer box within your choice. (Type a whole number.) O A. There must be yellow marbles added to the bag. O B. There must be blue marbles added to the bag. O C. There must be red marbles added to the bag Click to select and enter your answer(s) and then click Check Answer, Help Me Solve This View an Example Get More Help - Clear All Check Answer v Question T9 (1) v Question 2U (11) 2 dtv 2450 D MacBoo Pro
Addition Rule of Probability
It simply refers to the likelihood of an event taking place whenever the occurrence of an event is uncertain. The probability of a single event can be calculated by dividing the number of successful trials of that event by the total number of trials.
Expected Value
When a large number of trials are performed for any random variable ‘X’, the predicted result is most likely the mean of all the outcomes for the random variable and it is known as expected value also known as expectation. The expected value, also known as the expectation, is denoted by: E(X).
Probability Distributions
Understanding probability is necessary to know the probability distributions. In statistics, probability is how the uncertainty of an event is measured. This event can be anything. The most common examples include tossing a coin, rolling a die, or choosing a card. Each of these events has multiple possibilities. Every such possibility is measured with the help of probability. To be more precise, the probability is used for calculating the occurrence of events that may or may not happen. Probability does not give sure results. Unless the probability of any event is 1, the different outcomes may or may not happen in real life, regardless of how less or how more their probability is.
Basic Probability
The simple definition of probability it is a chance of the occurrence of an event. It is defined in numerical form and the probability value is between 0 to 1. The probability value 0 indicates that there is no chance of that event occurring and the probability value 1 indicates that the event will occur. Sum of the probability value must be 1. The probability value is never a negative number. If it happens, then recheck the calculation.
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