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suppose that the service life, in years, of the LOUD WHISPER a hearing aid battery is...
suppose that the service life, in years, of the LOUD WHISPER a hearing aid battery is a random variable have a weibull distrubtuion with scale parameter =.7 and the shape parameter = 2.1 what is the probability that the battery will fail between the first and third year
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suppose that the service life, in years, of the LOUD WHISPER a hearing aid battery is...
suppose that the service life, in years, of the LOUD WHISPER a
hearing aid battery is a random variable have a weibull
distrubtuion with scale parameter =.7 and the shape parameter =
2.1
A- what is the probability that the battery will fail between
the first and third year
B- at what point in time, 30% of the batteries died?
The life span of a battery is the amount of time the battery will last. The...
The life span of a battery is the amount of time the battery
will last. The distribution of life span for a certain type of
battery is approximately normal with mean 2.5 hours and standard
deviation 0.25 hour. Suppose one battery will be selected at
random. Which of the following is closest to the probability that
the selected battery will have a life span of at most 2.1
hours?
A:0.055
B: 0.110
C: 0.445
D: 0.890
E: 0.945
Suppose the life of a particular brand of calculator battery is approximately normally distributed with a...
Suppose the life of a particular brand of calculator battery is
approximately normally distributed with a mean of 85 hours and a
standard deviation of 11 hours. Complete parts a through c.
a. What is the probability that a single battery randomly
selected from the population will have a life between 80
and 90 hours?
P(80≤ overbar x≤90)= (Round to four decimal places as
needed.)
b. What is the probability that 4 randomly sampled batteries
from the population will have...
Suppose the life of a particular brand of calculator battery is approximately normally distributed with a...
Suppose the life of a particular brand of calculator battery is
approximately normally distributed with a mean of
80 hours and a standard deviation of 11 hours. Complete parts a
through c.
a. What is the probability that a single battery randomly selected
from the population will have a life between
and hours?
75
85
P(75 ≤ x ≤ 85) = (Round to four decimal places as needed.)
b. What is the probability that randomly sampled batteries from the
population...
Suppose the life of a particular brand of calculator battery is approximately normally distributed with a...
Suppose the life of a particular brand of calculator battery is
approximately normally distributed with a mean of 75 hours and a
standard deviation of 9 hours. Complete parts a through c.
a. What is the probability that a single battery randomly
selected from the population will have a life between 70 and 80
hours? P(70 < or = x overbar < or = 80) = 0.4246 (Round
to four decimal places as needed.)
b. What is the probability that...
Suppose the life of a particular brand of calculator battery is approximately normally distributed with a...
Suppose the life of a particular brand of calculator battery is
approximately normally distributed with a mean of 75 hours and a
standard deviation of 9 hours.
a. What is the probability that a single battery randomly
selected from the population will have a life between 70 and 80
hours? P(70less than or equalsx overbarless than or
equals80)equals nothing (Round to four decimal places as
needed.)
2.Suppose the life of a particular brand of calculator battery is approximately normally distributed with a...
2.Suppose the life of a particular brand of calculator battery
is approximately normally distributed with a mean of 75 hours and a
standard deviation of 9 hours. Complete parts a through c.
a. What is the probability that a single battery randomly
selected from the population will have a life between 65 and
85hours?
P(65≤ overbar x≤85)=
(Round to four decimal places as needed.)
An expensive watch is powered by a 3-volt lithium battery expected to last four years. Suppose...
An expensive watch is powered by a 3-volt lithium battery
expected to last
four years. Suppose the life of the battery has a standard
deviation of 0.7 year and is normally distributed.
a. Determine the probability that the watch's battery will last
longer than 4.8 years.
b. Calculate the probability that the watch's battery will last
more than 3.45 years.
c. Compute the length-of-life value for which 55% of the
watch's batteries last longer.
Round to 4 decimal places as...
2. An expensive watch is powered by a 3volt lithium battery expected to last years. Suppose...
2. An expensive watch is powered by a 3volt lithium battery
expected to last years. Suppose the life of the battery has a
standard deviation of year and is normally distributed. four 0.3 a.
Determine the probability that the watch's battery will last longer
than 4.8 years. b. Calculate the probability that the watch's
battery will last more than 3.45 years. c. Compute the lengthoflife
value for which 20 % of the watch's batteries last longer. a. The
probability that...
1) A car manufacturer knows that the service life (in months) of the emission sensors in...
1) A car manufacturer knows that the service life (in months) of
the emission sensors in its cars is normally distributed with a
mean of 72 and standard deviation of 9.
(5 points) What is the probability that the sensors will fail
within 5 years in a randomly selected car?
(12 points) What should be the warranty period of these sensors
so that 1% of them fail before the warranty is over.
(3 points) Suppose 3 cars are picked at...
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