Problem 43E

An article in Nuclear Engineering International (February 1988, p. 33) describes several characteristics of fuel rods used in a reactor owned by an electric utility in Norway. Measurements on the percentage of enrichment of 12 rods were reported as follows:

(a) Use a normal probability plot to check the normality assumption.

(b) Find a 99% two-sided confidence interval on the mean percentage of enrichment. Are you comfortable with the statement that the mean percentage of enrichment is 2.95%? Why?

Lecture6 - MoreBuilt-inMATLABFunctionsPractice Tuesday,September 27,212:04PM More Built-in MATLAB Functions These functions operatefirst by columnso to apply to an entire matrix the function must be applied 2x • any( ) = returns true if ANY element of the vector is true • all( ) = returns true if only ALL elements of the vector are true • min( ) and max( ) = find the smallest or largest elements of a vector ○ They return 2 things: the value & the index • sort(matrix, 'ascend' or 'descend') = sorts the vector in ascending or descending order ○ Returns 2 things: newly sorted vector & vector of indices sorted • Find( ) = it's just like indexing; it's finding where something is; specifically it converts a logical index into a regula