68% of statistics Mean 99 st 95% of statistics Mean 1 st. 1 st. 2 st. dev below 2 st dev above 3 st. dev below dev dev below above Suppose that water usages in American showers are normally distributed, using 15.3 gallons, and a standard deviation of 2.3 gallons. Estimate the pe used (a) % of showers use between 13 and 17.6 gallons. (b) % of showers use more than 22.2 gallons. (c) % of showers use less than 13 gallons. (d) According to the 2 Standard Deviation Rule, data values that are more deviations away from the mean of the distribution are considered to be "u "unusually low." According to this rule, it would be unusual for an America
68% of statistics Mean 99 st 95% of statistics Mean 1 st. 1 st. 2 st. dev below 2 st dev above 3 st. dev below dev dev below above Suppose that water usages in American showers are normally distributed, using 15.3 gallons, and a standard deviation of 2.3 gallons. Estimate the pe used (a) % of showers use between 13 and 17.6 gallons. (b) % of showers use more than 22.2 gallons. (c) % of showers use less than 13 gallons. (d) According to the 2 Standard Deviation Rule, data values that are more deviations away from the mean of the distribution are considered to be "u "unusually low." According to this rule, it would be unusual for an America
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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hi
Transcribed Image Text:68% of
statistics
Mean
95% of
statistics
99.7% of
statistics
+
Mean
Mean
1 st.
2 st dev
3 st dev
1 st.
dev
2 st. dev
below
3 st. dev
below
dev
above
above
below
above
Suppose that water usages in American showers are normally distributed, with an average shower
using 15.3 gallons, and a standard deviation of 2.3 gallons. Estimate the percentage of showers that
used
(a)
% of showers use between 13 and 17.6 gallons.
(b)
% of showers use more than 22.2 gallons.
(c)
% of showers use less than 13 gallons.
(d) According to the 2 Standard Deviation Rule, data values that are more than 2 standard
deviations away from the mean of the distribution are considered to be "unusually high" or
"unusually low." According to this rule, it would be unusual for an American shower to last more
than gallons.
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