We measured the length of two sides X and Y of a rectangular plate several times under fixed condition. We ignored the accuracy of the measurement instrument. The measurement results include the mean X = 10 in, the standard deviation of the X = 1.1 in, and the mean Y = 15 in, the standard deviation of the Y= 1.3 in, each measurement were collected 40 times. Please estimate the nearest uncertainty of the area A = XY at probability of 95%. O 12 O 24 O 10 O all solutions are not correct

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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We measured the length of two sides X and Y of a rectangular plate several times under fixed
condition. We ignored the accuracy of the measurement instrument. The measurement results
include the mean X = 10 in, the standard deviation of the X = 1.1 in, and the mean Y = 15 in, the
standard deviation of the Y= 1.3 in, each measurement were collected 40 times. Please estimate the
nearest uncertainty of the area A = XY at probability of 95%.
O 12
O 24
O 10
O all solutions are not correct
Transcribed Image Text:We measured the length of two sides X and Y of a rectangular plate several times under fixed condition. We ignored the accuracy of the measurement instrument. The measurement results include the mean X = 10 in, the standard deviation of the X = 1.1 in, and the mean Y = 15 in, the standard deviation of the Y= 1.3 in, each measurement were collected 40 times. Please estimate the nearest uncertainty of the area A = XY at probability of 95%. O 12 O 24 O 10 O all solutions are not correct
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