Concept explainers
To Find: The percentage of students that have finger span more than 10 inches.
Answer to Problem 41RE
The percentage of students having finger span more than 10 inches is
Explanation of Solution
Given information: Use a large sample as much possible.
Lets take X as Finger Span (span of fully stretched hand from the tip of the pinky finger to the tip of the thumb), measured in the unit of inches.
Based on a sample of size (n) 50 , sample Mean =8.5 inches and Sample standard deviation =0.65 inches
Since
Approximate the distribution of X by a
The probability that a randomly selected person’s finger span is more than 10 inches.
(Stat Crunch Steps :
to find
STAT > Calculators > Normal )
Hence the percentage of students who have finger span more than 10 inches
1.050813 % of students have finger span more than 10 inches .
Chapter 8 Solutions
Calculus 2012 Student Edition (by Finney/Demana/Waits/Kennedy)
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