Question
In: Statistics and Probability
The quality control manager at a light bulb factory needs to determine whether the mean life...
| The quality control manager at a light bulb factory needs to determine whether the mean life of a shipment of light bulbs is equal to 375 hours. The population standard deviation is 100 hours. A random sample of 64 light bulbs indicate a sample mean life of 350 hours. | ||||||||||||||||||
| a. State the null and alternative hypothesis. You can use the symbols tab (after Q5) to copy the symbols you need. | ||||||||||||||||||
| H0: | ||||||||||||||||||
| HA: | ||||||||||||||||||
| b. At the 0.05 level of significance, is there evidence that the mean life is different from 375 hours? Show all the steps! | ||||||||||||||||||
| c. What does a p-value mean for this test? Explain. | ||||||||||||||||||
can you please help me to solve this question on excel ??
Solutions
orchestra answered 2 years agoRelated Solutions
The quality control manager at a light bulb factory needs to determine whether the mean life...
The quality control manager at a light bulb factory needs to
determine whether the mean life of a shipment of light bulbs is
equal to 375 hours. The population standard deviation is 100 hours.
A random sample of 64 light bulbs indicate a sample mean life of
350 hours.
a. State
the null and alternative hypothesis. You can use the symbols tab
(after Q5) to copy the symbols you need.
H0:
HA:
b. At the
0.05 level of significance, is...
The quality control manager at a light bulb factory needs to estimate the mean life of...
The quality control manager at a light bulb factory needs to
estimate the mean life of a large shipment of light bulbs. The
standard deviation is 126 hours. A random sample of
81 light bulbs indicated a sample mean life of 500 hours.
Complete parts? (a) through? (d) below.
a. Construct a 95?% confidence interval
estimate for the population mean life of light bulbs in this
shipment.
The 95?% confidence interval estimate is from a lower limit of
___ hours...
The quality control manager at a light bulb factory needs to estimate the mean life of...
The quality control manager at a light bulb factory needs to
estimate the mean life of a large shipment of light bulbs. The
process standard deviation is known to be 100 hours. A random
sample of 64 light bulbs indicated a sample mean life of 350 hours.
Set up a 95% confidence interval estimate of the true population
mean life of light bulbs in this shipment. Interpret your
confidence interval.
The quality control manager at a light bulb factory needs to estimate the mean life of...
The quality control manager at a light bulb factory needs to
estimate the mean life of a large shipment of light bulbs. The
standard deviation is 91 hours. A random sample of 49 light bulbs
indicated a sample mean life of 340 hours. Complete parts (a)
through (d) below. a. Construct a 99% confidence interval
estimate for the population mean life of light bulbs in this
shipment. The 99% confidence interval estimate is from a lower
limit of nothing hours...
The quality control manager at a light bulb factory needs to estimate the mean life of...
The quality control manager at a light bulb factory needs to
estimate the mean life of a large shipment of light bulbs. The
standard deviation is 108 hours. A random sample of 64 light bulbs
indicated a sample mean life of 410 hours. Complete parts (a)
through (d) below.
a. Construct a 95% confidence interval estimate for the
population mean life of light bulbs in this shipment.
The 95% confidence interval estimate is from a lower limit of
___ hours...
TThe quality control manager at a light bulb factory needs to estimate the mean life of...
TThe quality control manager at a light bulb factory needs to
estimate the mean life of a large shipment of light bulbs. The
standard deviation is 108 hours. A random sample of 81 light bulbs
indicated a sample mean life of 410 hours . a. Construct a 99%
confidence interval estimate for the population mean life of light
bulbs in this shipment. b. Do you think that the manufacturer has
the right to state that the light bulbs have a...
the quality control manager at a compact fluorecent light bulb factory needs to determine whether the...
the quality control manager at a compact fluorecent light bulb
factory needs to determine whether the mean life of a large
shipment of CFL is equal to 7500 hours .the population sdtandard
deviation is 1000 hours . A random sample of 64 CFL indicate a
sample mean life of 7250 hours
The quality-control manager at a compact fluorescent light bulb (CFL) factory needs to determine whether the...
The quality-control manager at a compact fluorescent light
bulb (CFL) factory needs to determine whether the mean life of a
large shipment of CFLs is equal to 7,527 hours. The population
standard deviation is 840 hours. A random sample of 49 light bulbs
indicates a sample mean life of7,347 hours.
a. At the 0.05 level of significance, is there evidence that
the mean life is different from 7,527 hours?
b. Compute the p-value and interpret its meaning.
c. Construct a...
The quality-control manager at a compact fluorescent light bulb (CFL) factory needs to determine whether the...
The quality-control manager at a compact fluorescent light
bulb (CFL) factory needs to determine whether the mean life of a
large shipment of CFLs is equal to 7,531 hours. The population
standard deviation is 1,080 hours. A random sample of 8181 light
bulbs indicates a sample mean life of 7,231 hours.
a. At the 0.05 level of significance, is there evidence that
the mean life is different from 7,531 hours?
b. Compute the p-value and interpret its meaning.
c. Construct...
The quality-control manager at a compact fluorescent light bulb (CFL) factory needs to determine whether the...
The quality-control manager at a compact fluorescent light
bulb (CFL) factory needs to determine whether the mean life of a
large shipment of CFLs is equal to
7544 hours. The population standard deviation is 1080 hours A
random sample of 81 light bulbs indicates a sample mean life of
7244 hours.
a. At the 0.05 level of significance, is there evidence that
the mean life is different from 7544 hours?
b. Compute the p-value and interpret its meaning.
c. Construct...
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- identify one intrapersonal relationship and evaluate its component.
- Using Python in vs code: The distribution of letters in a document has a distinctive and...
- Why is De Beers exploring the diamond reselling market? How does the creation of IIDV affect...
- programming in Python The body mass index (BMI) is calculated as a person’s weight (in lb)...
- 1. Show the steps in merging A and B into C where A= 8, 12, 19,...
- 1. Given the following information, determine the beta coefficient for Stock L that is consistent with...
- Generate the first ten rows of Pascal triangle using MATLAB. Post code in the response
ADVERTISEMENT