Answered: A chemical engineer desiring to study…

Introduction to Chemical Engineering Thermodynamics

8th Edition

ISBN:9781259696527

Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

Chapter1: Introduction

Section: Chapter Questions

Problem 1.1P

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Question

A chemical engineer desiring to study the evaporation rate of water from brine
evaporation beds obtained data on the number of inches of evaporation in
each of 55 July days spread over 4 years. The data are given in the following
stem and leaf plot, which shows that the smallest data value was 0.02 inch, and
the largest 0.56 inch.
Stem Leaf
0.0 2, 6
0.1 1, 4
0.2 1, 1, 1, 3, 3, 4, 5, 5, 5, 6, 9
0.3 0, 0, 2, 2, 2, 3, 3, 3, 3, 4, 4, 5, 5, 5, 6, 6, 7, 8, 9
0.4 0, 1, 2, 2, 2, 3, 4, 4, 4, 5, 5, 5, 7, 8, 8, 8, 9, 9
0.5 2, 5, 6
Find the:
a) sample mean;
b) sample median;
c) sample standard deviation of these data.
d) Do the data appear to be approximately normal?
e) What percentage of data values are within 1 standard deviation of the mean?

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Introduction to Chemical Engineering Thermodynami…

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ISBN:

9781259696527

Author:

J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

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