Question
In: Statistics and Probability
A quality control expert at Glotech computers wants to test their new monitors. The production manager...
A quality control expert at Glotech computers wants to test their new monitors. The production manager claims they have a mean life of 73 months with a standard deviation of 7 months.
If the claim is true, what is the probability that the mean monitor life would be greater than 72.1 months in a sample of 109 monitors? Round your answer to four decimal places.
Solutions
Expert Solution
Solution :
Given that ,
mean = 
= 73
standard deviation = 
= 7
n = 109
=
= 73
=
/ 
n = 7 /
109 = 0.6705
P(
> 72.1 ) = 1 - P(
<72.1 )
= 1 - P[(
-
) /
< (72.1 - 73) / 0.6705]
= 1 - P(z <-1.34)
= 1 - 0.0901 = 0.9099
probability 0.9099
orchestra answered 2 years agoRelated Solutions
A quality control expert at Glotech computers wants to test their new monitors. The production manager...
A quality control expert at Glotech computers wants to test
their new monitors. The production manager claims they have a mean
life of 83 months with a variance of 81. If the claim is true, what
is the probability that the mean monitor life would be greater than
81.2 months in a sample of 146 monitors? Round your answer to four
decimal places.
A quality control expert at Glotech computers wants to test their new laptop monitors. The production...
A quality control expert at Glotech computers wants to test
their new laptop monitors. The production manager claims the
monitors have a mean life of 89 months with a population standard
deviation of 5 months. If the claim is true, what is the
probability that the mean monitor life would be greater than 87.8
months in a sample of 123 monitors? Round your answer to four
decimal places.
A. 0.5948
B. 0.0001
C. 0.9961
D. 0.5000
E. 0.0039
A quality control expert at bobcat computers want to test their new laptop monitors. The production...
A quality control expert at bobcat computers want to test their
new laptop monitors. The production manager claims the monitors
have a mean life of 89 months with a population standard deviation
of 5 months. If the claim is true, what is the probability that the
mean monitor life would be greater than 87.7 months in a sample of
123 monitors? Round answer to four decimal places.
A).0001
B).5948
C).0039
D).9961
E).5000
A quality control expert at LIFE batteries wants to test their new batteries. The design engineer...
A quality control expert at LIFE batteries wants to test their
new batteries. The design engineer claims they have a standard
deviation of 86 minutes with a mean life of 505 minutes. If the
claim is true, in a sample of 120 batteries, what is the
probability that the mean battery life would differ from the
population mean by greater than 16.6 minutes? Round your answer to
four decimal places.
A quality control expert at LIFE batteries wants to test their new batteries. The design engineer...
A quality control expert at LIFE batteries wants to test their
new batteries. The design engineer claims they have a variance of
8464 with a mean life of 886 minutes. If the claim is true, in a
sample of 145 batteries, what is the probability that the mean
battery life would be greater than 904.8 minutes? Round your answer
to four decimal places.
A production manager at a wall clock company wants to test their new wall clocks. The...
A production manager at a wall clock company wants to test their
new wall clocks. The designer claims they have a mean life of 16
years with a variance of 16. If the claim is true, in a sample of
48 wall clocks, what is the probability that the mean clock life
would differ from the population mean by greater than 0.7 years?
Round your answer to four decimal places.
A production manager at a wall clock company wants to test their new wall clocks. The...
A production manager
at a wall clock company wants to test their new wall clocks. The
designer claims they have a mean life of 1717 years with a variance
of 1616.
If the claim is true,
in a sample of 4343 wall clocks, what is the probability that the
mean clock life would be greater than 17.917.9 years? Round your
answer to four decimal places.
A production manager at a wall clock company wants to test their new wall clocks. The...
A production manager at a wall clock company wants to test their
new wall clocks. The designer claims they have a mean life of 1414
years with a variance of 1616.
If the claim is true, in a sample of 4040 wall clocks, what is
the probability that the mean clock life would differ from the
population mean by less than 0.40.4 years? Round your answer to
four decimal places.
A production manager at a wall clock company wants to test their new wall clocks. The...
A production manager at a wall clock company wants to test their
new wall clocks. The designer claims they have a mean life of 14
years with a variance of 25. If the claim is true, in a sample of
50 wall clocks, what is the probability that the mean clock life
would differ from the population mean by less than 1.5 years? Round
your answer to four decimal places.
A quality control manager at a plant wants to determine if the average width of bolts...
A quality control manager at a plant wants to determine if the
average width of bolts is different than 4 mm. A sample of 28 bolts
yields sample mean, mm and sample standard deviation,
s = 0.6. The decision with α = 0.05 would be:
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- Compare the MOSFET, JFET , and BJT and identify the reasons these devices behave differently. What...
- How would you use SAS Enterprise Miner to create a neural network model of your example?
- Explain the use of neural networking modeling in predictive analytics.
- Current Market Mix of Netflix, as detail as possible, please.
- This is all one question, thank you so much in advance! You must evaluate a proposal...
- X Company is considering the purchase of a new processor that costs $200,000. Shipping and setup...
- There are a large number of tasks involved in information technology and programming, and many of...
ADVERTISEMENT