Length of research papers is uniformly distributed

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Reference no: EM132171718

1. Suppose that the length of research papers is uniformly distributed from 10 to 23 pages. We survey a class in which 55 research papers were turned in to a professor. The 55 research papers are considered a random collection of all papers. We are interested in the average length of the research papers.

A. Enter an exact number as an integer, fraction, or decimal.

μX =

B. Round your answer to four decimal places.

σX = 

2. Some statistics students estimated that the amount of change daytime statistics students carry is exponentially distributed with a mean of $0.72. Suppose that we randomly pick 25 daytime statistics students. 

A. Give the distribution of X

X ~ __ (_____)

B. Give the distribution of X. (Round your standard deviation to three decimal places.) 

X ~ ___ (__ , __)

C. Find the probability that an individual had between $0.66 and $0.90. (Round your answer to four decimal places.) 

D. Find the probability that the average of the 25 students was between $0.66 and $0.90. (Round your answer to four decimal places.)

Reference no: EM132171718

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