According to the Official Stage Magician Handbook, magic rabbit weight (Ibs.) is normally distributed with u = 6.2 and o = 1.5. Consider obtaining a random sample of 17 magic rabbits. Would it be unusual for the sample mean to be at least 6.5? Why or why not? O Yes because the z-score corresponding to a sample mean of 6.5 would be z = 0.82. O No because the z-score corresponding to a sample mean of 6.5 would be z = 0.20. %3D O Yes because the z-score corresponding to a sample mean of 6.5 would be z = 0.2O. O No because the z-score corresponding to a sample mean of 6.5 would be z = 0.82.
According to the Official Stage Magician Handbook, magic rabbit weight (Ibs.) is normally distributed with u = 6.2 and o = 1.5. Consider obtaining a random sample of 17 magic rabbits. Would it be unusual for the sample mean to be at least 6.5? Why or why not? O Yes because the z-score corresponding to a sample mean of 6.5 would be z = 0.82. O No because the z-score corresponding to a sample mean of 6.5 would be z = 0.20. %3D O Yes because the z-score corresponding to a sample mean of 6.5 would be z = 0.2O. O No because the z-score corresponding to a sample mean of 6.5 would be z = 0.82.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question
![**Consider the Following Scenario:**
According to the Official Stage Magician Handbook, magic rabbit weight (lbs.) is normally distributed with a mean (μ) of 6.2 and a standard deviation (σ) of 1.5.
**Problem Statement:**
Consider obtaining a random sample of 17 magic rabbits.
Would it be unusual for the sample mean to be at least 6.5? Why or why not?
**Answer Choices:**
1. ○ Yes, because the z-score corresponding to a sample mean of 6.5 would be z = 0.82.
2. ○ No, because the z-score corresponding to a sample mean of 6.5 would be z = 0.20.
3. ○ Yes, because the z-score corresponding to a sample mean of 6.5 would be z = 0.20.
4. ○ No, because the z-score corresponding to a sample mean of 6.5 would be z = 0.82.
**Explanation of the Problem:**
To determine whether it is unusual for the sample mean to be at least 6.5, we need to find the z-score for the sample mean.
The z-score can be calculated using the formula for the z-score of a sample mean:
\[ z = \frac{\bar{x} - \mu}{\sigma / \sqrt{n}} \]
Where:
- \(\bar{x}\) is the sample mean (6.5 in this case)
- \(\mu\) is the population mean (6.2)
- \(\sigma\) is the population standard deviation (1.5)
- \(n\) is the sample size (17)
The z-score tells us how many standard errors the sample mean is away from the population mean.
Knowing the z-score, we can determine how unusual it is for the sample mean to be at least 6.5.
**Calculation Example:**
1. Plug in the values to calculate the z-score.
2. Interpret the z-score based on standard normal distribution values to determine if the result is unusual.
Ultimately, check the given answer choices, where the correct understanding of the z-score will help you identify if having a sample mean of 6.5 is unusual or not based on how far it lies from the mu in terms of standard deviations (z-scores).](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F899c9d7f-c405-4c72-8a00-0f711d96c18e%2F5b3239e3-86a5-4eee-9eba-9e92f196e219%2F08n28d_processed.jpeg&w=3840&q=75)
Transcribed Image Text:**Consider the Following Scenario:**
According to the Official Stage Magician Handbook, magic rabbit weight (lbs.) is normally distributed with a mean (μ) of 6.2 and a standard deviation (σ) of 1.5.
**Problem Statement:**
Consider obtaining a random sample of 17 magic rabbits.
Would it be unusual for the sample mean to be at least 6.5? Why or why not?
**Answer Choices:**
1. ○ Yes, because the z-score corresponding to a sample mean of 6.5 would be z = 0.82.
2. ○ No, because the z-score corresponding to a sample mean of 6.5 would be z = 0.20.
3. ○ Yes, because the z-score corresponding to a sample mean of 6.5 would be z = 0.20.
4. ○ No, because the z-score corresponding to a sample mean of 6.5 would be z = 0.82.
**Explanation of the Problem:**
To determine whether it is unusual for the sample mean to be at least 6.5, we need to find the z-score for the sample mean.
The z-score can be calculated using the formula for the z-score of a sample mean:
\[ z = \frac{\bar{x} - \mu}{\sigma / \sqrt{n}} \]
Where:
- \(\bar{x}\) is the sample mean (6.5 in this case)
- \(\mu\) is the population mean (6.2)
- \(\sigma\) is the population standard deviation (1.5)
- \(n\) is the sample size (17)
The z-score tells us how many standard errors the sample mean is away from the population mean.
Knowing the z-score, we can determine how unusual it is for the sample mean to be at least 6.5.
**Calculation Example:**
1. Plug in the values to calculate the z-score.
2. Interpret the z-score based on standard normal distribution values to determine if the result is unusual.
Ultimately, check the given answer choices, where the correct understanding of the z-score will help you identify if having a sample mean of 6.5 is unusual or not based on how far it lies from the mu in terms of standard deviations (z-scores).
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