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A)lf a grown man is picked at random and his QT interval measured, what is the probability of the interval being longer than 420 ms b) If a grown man is picked at random and his QT interval measured, what is the probability of the interval being between 400 than 420 ms C.) how long needs a QT interval to be, at minumum in order to be among the 20% longest QT intervals in a grown man?

A)lf a grown man is picked at random and his QT interval measured, what is the probability of the interval being longer than 420 ms b) If a grown man is picked at random and his QT interval measured, what is the probability of the interval being between 400 than 420 ms C.) how long needs a QT interval to be, at minumum in order to be among the 20% longest QT intervals in a grown man?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 13PPS
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ECG records how electric signals are transmitted throughout the heart and cons- ists of waves called P, Q, R, S, T and U. Let's assume that the interval between Q and T waves in a grown man, so called QT-interval, is normally distributed with the mean 400 ms and standard deviation 20 ms. If a grown man is picked random and his QT interval measured, what is the probability of the interval being longer than 420 ms? b) 5% If a grown man is picked at random and his QT interval measured, what is the probability of the interval being between 400 and 420 ms? c) 5% How long needs a QT interval to be, at mininum, in order to be among the 20 % longest QT intervals in a grown man? Allf a grown man is picked at random and his QT interval measured, what is the probability of the interval being longer than 420 ms b) If a grown man is picked at random and his QT interval measured, what is the probability of the interval being between 400 than 420 ms C.) how long needs a QT interval to be, at minumum in order to be among the 20% longest QT intervals in a grown man?
Transcribed Image Text:ECG records how electric signals are transmitted throughout the heart and cons- ists of waves called P, Q, R, S, T and U. Let's assume that the interval between Q and T waves in a grown man, so called QT-interval, is normally distributed with the mean 400 ms and standard deviation 20 ms. If a grown man is picked random and his QT interval measured, what is the probability of the interval being longer than 420 ms? b) 5% If a grown man is picked at random and his QT interval measured, what is the probability of the interval being between 400 and 420 ms? c) 5% How long needs a QT interval to be, at mininum, in order to be among the 20 % longest QT intervals in a grown man? Allf a grown man is picked at random and his QT interval measured, what is the probability of the interval being longer than 420 ms b) If a grown man is picked at random and his QT interval measured, what is the probability of the interval being between 400 than 420 ms C.) how long needs a QT interval to be, at minumum in order to be among the 20% longest QT intervals in a grown man?
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