The time X (min) for a lab assistant to prepare the equipment for a certain experiment is believed to have a uniform distribution with A = 25 and B- 35. (a) Determine the pdf of X. 0.1 25 v SxS 35 X) - otherwise Sketch the corresponding density curve. 020 020 015 0.15 0.10 0.10 25 25 0.20 0.20 0.15 a.10 a.10 25 30 35 25 30 (b) What is the probability that preparation time exceeds 29 min? (c) What is the probability that preparation time is within 2 min of the mean time? [Hint: Identify a from the graph of f(x).] (d) For any a such that 25

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The time \( X \) (min) for a lab assistant to prepare the equipment for a certain experiment is believed to have a uniform distribution with \( A = 25 \) and \( B = 35 \).

(a) Determine the pdf of \( X \).

\[ 
f(x) = 
\begin{cases} 
0.1, & 25 \leq x \leq 35 \\ 
0, & \text{otherwise} 
\end{cases}
\]

Sketch the corresponding density curve.

- The graph of \( f(x) \) is a horizontal line at \( f(x) = 0.1 \) between \( x = 25 \) and \( x = 35 \).
- The line drops to \( 0 \) outside this interval.

(b) What is the probability that preparation time exceeds 29 min?

(c) What is the probability that preparation time is within 2 min of the mean time? [Hint: Identify \( \mu \) from the graph of \( f_X \).]

(d) For any \( a \) such that \( 25 < a < a + 2 < 35 \), what is the probability that preparation time is between \( a \) and \( a + 2 \) min?
Transcribed Image Text:The time \( X \) (min) for a lab assistant to prepare the equipment for a certain experiment is believed to have a uniform distribution with \( A = 25 \) and \( B = 35 \). (a) Determine the pdf of \( X \). \[ f(x) = \begin{cases} 0.1, & 25 \leq x \leq 35 \\ 0, & \text{otherwise} \end{cases} \] Sketch the corresponding density curve. - The graph of \( f(x) \) is a horizontal line at \( f(x) = 0.1 \) between \( x = 25 \) and \( x = 35 \). - The line drops to \( 0 \) outside this interval. (b) What is the probability that preparation time exceeds 29 min? (c) What is the probability that preparation time is within 2 min of the mean time? [Hint: Identify \( \mu \) from the graph of \( f_X \).] (d) For any \( a \) such that \( 25 < a < a + 2 < 35 \), what is the probability that preparation time is between \( a \) and \( a + 2 \) min?
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