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.
Question 36
![### Finding the Measure of Arc \( \overset{\frown}{CD} \)
Given a circle with points \( A \), \( B \), \( C \), and \( D \) on its circumference and the following angles:
- \( \angle AMB = 78^\circ \)
- \( \angle CMD = 106^\circ \)
We are asked to find the measure of arc \( \overset{\frown}{CD} \).
#### Diagram Explanation:
- The circle is marked with points \( A \), \( B \), \( C \), and \( D \).
- \( M \) is the intersection of the lines \( \overline{AB} \) and \( \overline{CD} \) inside the circle.
- The angle formed at \( M \) by arc \( \overset{\frown}{AB} \) is \( 78^\circ \).
- The angle formed at \( M \) by arc \( \overset{\frown}{CD} \) is \( 106^\circ \).
#### Multiple Choice Options:
- A. \( 92^\circ \)
- B. \( 106^\circ \)
- C. \( 134^\circ \)
- D. \( 1184^\circ \)
To find the correct measure of \( \overset{\frown}{CD} \), we observe the given angles and apply them appropriately to find the relationship between the angles and arcs in the circle.
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### Explanation Steps:
Using theorem properties of inscribed angles and their intercepted arcs, we can derive the required information to answer the question. Note that the sum of the measures of angles formed by intersecting chords is half the sum of the measures of the arcs they intercept.
Now, let's proceed with solving the problem using appropriate circle theorems to arrive at the measure for arc \( \overset{\frown}{CD} \).
In this case, since \( \angle CMD \) intercepts \( \overset{\frown}{CD} \):
\[
m \angle CMD = \frac{1}{2}( \overset{\frown}{CD} + \overset{\frown}{AB})
\]
Given \( m\angle CMD = 106^\circ \) and assuming \( \overset{\frown}{AB} = 78^\circ \)
So we put these values in formula to find \( \overs](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc14456c8-c349-46c2-a794-2f6de4965e41%2F2c64073f-e42c-444c-a8db-79cd284df48d%2Fxd9dzd_processed.png&w=3840&q=75)
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