(d) What is the probability that the observed depth is within 1 standard deviation of the mean value? (Round your answer to four decimal places.) What is the probability that the observed depth is within 2 standard deviations of the mean value?

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(d) What is the probability that the observed depth is within 1 standard deviation of the mean value? (Round your answer to four decimal places.)

What is the probability that the observed depth is within 2 standard deviations of the mean value?

An article suggests the uniform distribution on the interval \( (8.5, 19) \) as a model for depth (cm) of the bioturbation layer in sediment in a certain region.

**(a) What are the mean and variance of depth? (Round your variance to two decimal places.)**
- Mean: 13.75 ✅
- Variance: 9.1875 ✅

**(b) What is the cdf of depth?**
\[ 
F(x) = 
\begin{cases} 
0 & x < 8.5 \\ 
\frac{x - 8.5}{10.5} & 8.5 \leq x < 19 \\ 
1 & 19 \leq x 
\end{cases} 
\] 
✅

**(c) What is the probability that observed depth is at most 10? (Round your answer to four decimal places.)**
- Probability: 0.1429 ✅

What is the probability that observed depth is between 10 and 15? (Round your answer to four decimal places.)
- Probability: 0.4762 ✅

**(d) What is the probability that the observed depth is within 1 standard deviation of the mean value? (Round your answer to four decimal places.)**

What is the probability that the observed depth is within 2 standard deviations of the mean value?
Transcribed Image Text:An article suggests the uniform distribution on the interval \( (8.5, 19) \) as a model for depth (cm) of the bioturbation layer in sediment in a certain region. **(a) What are the mean and variance of depth? (Round your variance to two decimal places.)** - Mean: 13.75 ✅ - Variance: 9.1875 ✅ **(b) What is the cdf of depth?** \[ F(x) = \begin{cases} 0 & x < 8.5 \\ \frac{x - 8.5}{10.5} & 8.5 \leq x < 19 \\ 1 & 19 \leq x \end{cases} \] ✅ **(c) What is the probability that observed depth is at most 10? (Round your answer to four decimal places.)** - Probability: 0.1429 ✅ What is the probability that observed depth is between 10 and 15? (Round your answer to four decimal places.) - Probability: 0.4762 ✅ **(d) What is the probability that the observed depth is within 1 standard deviation of the mean value? (Round your answer to four decimal places.)** What is the probability that the observed depth is within 2 standard deviations of the mean value?
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