The president of Doerman Distributors, Inc., believes that 32% of the firm's orders come from first-time customers. A simple random sample of 100 orders will be used to estimate the proportion of first-time customers. Use z-table. a. Assume that the president is correct and p = 0.32. What is the sampling distribution of p for this study? A normal distribution because np and n(1-p) are both greater than 5 b. What is the probability that the sample proportion will be between 0.24 and 0.40 (to 4 decimals)? .9146 c. What is the probability that the sample proportion will be between 0.29 and 0.35 (to 4 decimals)?
The president of Doerman Distributors, Inc., believes that 32% of the firm's orders come from first-time customers. A simple random sample of 100 orders will be used to estimate the proportion of first-time customers. Use z-table. a. Assume that the president is correct and p = 0.32. What is the sampling distribution of p for this study? A normal distribution because np and n(1-p) are both greater than 5 b. What is the probability that the sample proportion will be between 0.24 and 0.40 (to 4 decimals)? .9146 c. What is the probability that the sample proportion will be between 0.29 and 0.35 (to 4 decimals)?
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
Transcribed Image Text:# Educational Content: Sampling Distribution of p
## Exercise 07.31 Algo (Sampling Distribution of p)
### Context
The president of Doerman Distributors, Inc., believes that 32% of the firm's orders come from first-time customers. A simple random sample of 100 orders will be used to estimate the proportion of first-time customers.
### Problem Statements
1. **Assumptions and Distribution**
- Assume the president’s belief is correct with \( p = 0.32 \).
- **Question:** What is the sampling distribution of \( \hat{p} \) for this study?
- **Answer:** It's a normal distribution because \( np \) and \( n(1-p) \) are both greater than 5. ✔️
2. **Probability Calculations**
- **Question (b):** What is the probability that the sample proportion will be between 0.24 and 0.40 (to 4 decimals)?
- **Answer:** 0.9146 ✔️
- **Question (c):** What is the probability that the sample proportion will be between 0.29 and 0.35 (to 4 decimals)?
- **Answer Section:** Incorrect attempt with a blank input. ❌
### Feedback
- **Status:** Partially Correct
- **Action:** The student may review their calculations for the latter probability question, ensuring the correct use of the z-table for precise results.
#### Note
The exercise is part of a statistical estimate on sampling distributions, emphasizing the importance of normal distribution assumptions and probability calculations using z-tables.
## Additional Resources
- Z-table lookup and application
- Concepts of normal distribution and sampling proportions
### Technical Details
- This task was performed on a MacBook Pro, using browser-based educational software (Cengage MindTap).
- Comments and progress are tracked, providing immediate student feedback and opportunities for iterative learning.
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