Two hundred adults age 18 to 29 were polled regarding their use of various social media websites, and the resulting data appears in the diagram below. Let F = the event that the person uses social media website F, and T = the event that a person uses social media website T. A person from this survey is randomly chosen. Complete parts (a) through (c) below. 124 20 47 For events A and B, with n(B) > 0, the conditional probability of A given B, denoted P(A|B), is given by which formula below? n(B) n(ANB) O A. P(A|B) = n(ANB) O B. P(A|B) = n(A) n(AUB) n(B) n(ANB) OC. P(A|B) = n(B) O D. P(A|B) = O E. P(A|B) = n(AUB) • n(B) O F. P(A|B) = n(ANB) • n(B) a. Find P(F|T). P(F|T) = (Simplify your answer.) What does this number represent? O A. This is the probability that a person uses both social media websites, F and T. O B. This is the probability that a person uses social media website F, given that the person uses social media website T. OC. This is the probability that a person uses social media website T, given that the person uses social media website F. O D. This is the probability that a person uses at least one social media website, F or T. b. Find P(T|F). P(T|F) = (Simplify your answer.) What does this number represent? O A. This is the probability that a person uses social media website T, given that the person uses social media website F. O B. This is the probability that a person uses both social media websites, F and T. O C. This is the probability that a person uses social media website F, given that the person uses social media website T. O D. This is the probability that a person uses at least one social media website, F or T.

Calculus: Early Transcendentals
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ISBN:9781285741550
Author:James Stewart
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Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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Two hundred adults age 18 to 29 were polled regarding their use of various social media​ websites, and the resulting data appears in the diagram below. Let
F=the
event that the person uses social media website​ F, and T​ = the event that a person uses social media website T. A person from this survey is randomly chosen. Complete parts​ (a) through​ (c) below.
 
 
 
 
 
 
 
 
 
 
 
 
**Find \( P(F' \mid T') \).**

\[ P(F' \mid T') = \] ☐ (Simplify your answer.)

**What does this number represent?**

- **A.** This is the probability that a person does not use either social media websites.
- **B.** This is the probability that a person does not use social media website F, given that the person does not use social media website T.
- **C.** This is the probability that a person does not use social media website T, given that the person does not use social media website F.
- **D.** This is the probability that a person uses some other social media website.
Transcribed Image Text:**Find \( P(F' \mid T') \).** \[ P(F' \mid T') = \] ☐ (Simplify your answer.) **What does this number represent?** - **A.** This is the probability that a person does not use either social media websites. - **B.** This is the probability that a person does not use social media website F, given that the person does not use social media website T. - **C.** This is the probability that a person does not use social media website T, given that the person does not use social media website F. - **D.** This is the probability that a person uses some other social media website.
**Title:** Understanding Conditional Probability through Social Media Usage

**Summary:** A survey of 200 adults aged 18 to 29 explored their use of two social media websites, F and T. The results are depicted in a Venn diagram, where F and T represent users of each website.

**Venn Diagram Explanation:**
- 124 people use only website F.
- 9 people use only website T.
- 20 people use both websites F and T.

**Tasks:**

**1. Conditional Probability Formula Selection**

For events A and B, with \( n(B) > 0 \), the formula for the conditional probability \( P(A|B) \) determines how likely A is given that B has already occurred. Identify the correct formula from the choices:
- \( \text{A. } P(A|B) = \frac{n(B)}{n(A \cap B)} \)
- \( \text{B. } P(A|B) = \frac{n(A \cap B)}{n(A)} \)
- \( \text{C. } P(A|B) = \frac{n(A \cap B)}{n(B)} \) *(Correct Answer)*
- \( \text{D. } P(A|B) = \frac{n(A \cup B)}{n(B)} \)
- \( \text{E. } P(A|B) = n(A \cup B) \cdot n(B) \)
- \( \text{F. } P(A|B) = n(A \cap B) \cdot n(B) \)

**2. Calculation and Interpretation:**

**a. Find \( P(F|T) \)**

Calculate the probability that a person uses social media website F given that they use website T.

- \( P(F|T) = \frac{n(F \cap T)}{n(T)} = \frac{20}{29} \)

*Interpretation:* 
This figure represents the probability that a person uses website F given that they already use website T.

**b. Find \( P(T|F) \)**

Calculate the probability that a person uses social media website T given that they use website F.

- \( P(T|F) = \frac{n(F \cap T)}{n(F)} = \frac{20}{144} \)

*Interpretation:*
This figure indicates the probability
Transcribed Image Text:**Title:** Understanding Conditional Probability through Social Media Usage **Summary:** A survey of 200 adults aged 18 to 29 explored their use of two social media websites, F and T. The results are depicted in a Venn diagram, where F and T represent users of each website. **Venn Diagram Explanation:** - 124 people use only website F. - 9 people use only website T. - 20 people use both websites F and T. **Tasks:** **1. Conditional Probability Formula Selection** For events A and B, with \( n(B) > 0 \), the formula for the conditional probability \( P(A|B) \) determines how likely A is given that B has already occurred. Identify the correct formula from the choices: - \( \text{A. } P(A|B) = \frac{n(B)}{n(A \cap B)} \) - \( \text{B. } P(A|B) = \frac{n(A \cap B)}{n(A)} \) - \( \text{C. } P(A|B) = \frac{n(A \cap B)}{n(B)} \) *(Correct Answer)* - \( \text{D. } P(A|B) = \frac{n(A \cup B)}{n(B)} \) - \( \text{E. } P(A|B) = n(A \cup B) \cdot n(B) \) - \( \text{F. } P(A|B) = n(A \cap B) \cdot n(B) \) **2. Calculation and Interpretation:** **a. Find \( P(F|T) \)** Calculate the probability that a person uses social media website F given that they use website T. - \( P(F|T) = \frac{n(F \cap T)}{n(T)} = \frac{20}{29} \) *Interpretation:* This figure represents the probability that a person uses website F given that they already use website T. **b. Find \( P(T|F) \)** Calculate the probability that a person uses social media website T given that they use website F. - \( P(T|F) = \frac{n(F \cap T)}{n(F)} = \frac{20}{144} \) *Interpretation:* This figure indicates the probability
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