The lifetime of a AAA battery is normally distributed with mean µ= 26.5 hours and standard eviation o = 4.2 hours. a) For a battery selected at random, what is the probability that the lifetime will be at least 29 Lours? %3D a. (b) For a battery selected at random, what is the probability that the lifetime will be between 25 and 29 hours? b. (c) What is the probability that the mean lifetime of batteries from a package of 13 will be greater than 26 hours? с.
The lifetime of a AAA battery is normally distributed with mean µ= 26.5 hours and standard eviation o = 4.2 hours. a) For a battery selected at random, what is the probability that the lifetime will be at least 29 Lours? %3D a. (b) For a battery selected at random, what is the probability that the lifetime will be between 25 and 29 hours? b. (c) What is the probability that the mean lifetime of batteries from a package of 13 will be greater than 26 hours? с.
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
Related questions
Question
So for the first one I found the z score then used the normal distribution table. How to solve ?
Transcribed Image Text:4. The lifetime of a AAA battery is normally distributed with mean µ = 26.5 hours and standard
deviation o = 4.2 hours.
(a) For a battery selected at random, what is the probability that the lifetime will be at least 29
hours?
а.
(b) For a battery selected at random, what is the probability that the lifetime will be between 25
and 29 hours?
b.
(c) What is the probability that the mean lifetime i of batteries from a package of 13 will be
greater than 26 hours?
e for Estimating
X - X
70,889
MAY
11
w
MacBook Air
80
888
DII
DD
F3
F4
F5
FB
F9
F10
F12
*
$
&
3
4
7
de
}
E
T
Y
D
F
H
J
L
>
?
C V
N
M
日
.. ..
* CO
8 :
B
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.Recommended textbooks for you