A manufacturer claims that his television will have an average lifetime of at least 5 years....
- A manufacturer claims that his television will have an average lifetime of at least 5 years. The standard deviation is 8 months. 64 sets were selected at random and their average lifetime was found to be 59 months. Is the manufacturer correct? Use = 0:025.
Homework Answers
Add Answer to:
A manufacturer claims that his television will have an average
lifetime of at least 5 years....
A manufacturer claims that the mean lifetime, it, of its light bulbs is 44 months. The...
A manufacturer claims that the mean lifetime, it, of its light bulbs is 44 months. The standard deviation of these lifetimes is 5 months. Fifty bulbs are selected at random, and their mean lifetime is found to be 45 months. Can we conclude, at the 0.05 level of significance, that the mean lifetime of light bulbs made by this manufacturer differs from 44 months? Perform a two-tailed test. Then fill in the table below Carry your intermediate computations to at...
A manufacturer claims that the mean lifetime, u, of its light bulbs is 52 months. The...
A manufacturer claims that the mean lifetime, u, of its light bulbs is 52 months. The standard deviation of these lifetimes is 6 months. Fifty bulbs are selected at random, and their mean lifetime is found to be 50 months. Can we conclude, at the 0.05 level of significance, that the mean lifetime of light bulbs made by this manufacturer differs from 52 months? Perform a two-tailed test. Then fill in the table below. Carry your intermediate computations to at...
A manufacturer claims that the mean lifetime, H, of its light bulbs is 48 months. The...
A manufacturer claims that the mean lifetime, H, of its light bulbs is 48 months. The standard deviation of these lifetimes is 6 months. Fifty bulbs are selected at random, and their mean lifetime is found to be 49 months. Can we conclude, at the 0.1 level.of signficance, that the mean lifetime of light bulbs made by this manufacturer differs from 48 months? Perform a two-tailed test. Then fill in the table below. Carry your intermediate computations to at least...
The average lifetime of smoke detectors that a company manufactures is 5 years, or 60 months,...
The average lifetime of smoke detectors that a company manufactures is 5 years, or 60 months, and the standard deviation is 6 months. Find the probability that a random sample of 35 smoke detectors will have a mean lifetime between 59 and 62 months. Assume that the sample is taken from a large population and the correction factor can be ignored. Round the final answer to four decimal places and intermediate z-value calculations to two decimal places P (59 <...
imited A manufacturer claims that the mean lifetime, H, of its light bulbs is 52 months....
imited A manufacturer claims that the mean lifetime, H, of its light bulbs is 52 months. The standard deviation of these lifetimes is 6 months. Nine bulbs are selected at random, and their mean lifetime is found to be 51 months. Assume that the population is normally distributed. Can we conclude, at the 0.05 level of significance, that the mean lifetime of light bulbs made by this manufacturer differs from 52 months? Perform a two-tailed test. Then fill in the...
The manufacturer of the ColorSmart-5000 television set claims 95 percent of its sets last at least...
The manufacturer of the ColorSmart-5000 television set claims 95 percent of its sets last at least five years without needing a single repair. In order to test this claim, a consumer group randomly selects 352 consumers who have owned a ColorSmart-5000 television set for five years. Of these 352 consumers, 310 say their ColorSmart-5000 television sets did not need a repair, whereas 42 say their ColorSmart-5000 television sets did need at least one repair. Determine the sample size needed in...
The manufacturer of the ColorSmart-5000 television set claims that 95 percent of its television sets last...
The manufacturer of the ColorSmart-5000 television set claims that 95 percent of its television sets last at least five years without needing a single repair. In order to test this claim, a consumer group randomly selects 400 consumers who have owned a ColourSmart-5000 television set for five years. Of these 400 consumers, 316 say that their ColourSmart-5000 television sets did not need repair, while 84 say that their ColourSmart-5000 television sets did need at least one repair. Conduct an appropriate...
The manufacturer of the ColorSmart-5000 television set claims 95 percent of its sets last at least...
The manufacturer of the ColorSmart-5000 television set claims 95 percent of its sets last at least five years without needing a single repair. In order to test this claim, a consumer group randomly selects 403 consumers who have owned a ColorSmart-5000 television set for five years. Of these 403 consumers, 330 say their ColorSmart-5000 television sets did not need a repair, whereas 73 say their ColorSmart-5000 television sets did need at least one repair. Determine the sample size needed in...
A manufacturer daims that the mean lifetime, H, of its light bulbs is 43 months. The...
A manufacturer daims that the mean lifetime, H, of its light bulbs is 43 months. The standard deviation of these lifetimes is 8 months. Seventy bulbs are selected at random, and their mean lifetime is found to be 44 months. Can we conclude, at the 0.01 level of significance, that the mean lifetime of light bulbs made by this manufacturer differs from 43 months? Perform a two-tailed test. Then fill in the table below. Carry your intermediate computations to at...
3. value: 10.00 points The manufacturer of the ColorSmart-5000 television set claims 95 percent of its...
3. value: 10.00 points The manufacturer of the ColorSmart-5000 television set claims 95 percent of its sets last at least five years without needing a single repair. In order to test this claim, a consumer group randomly selects 352 consumers who have owned a ColorSmart-5000 television set for five years. Of these 352 consumers, 310 say their ColorSmart-5000 television sets did not need a repair, whereas 42 say their ColorSmart-5000 television sets did need at least one repair. (a) Find...
A manufacturer claims that the mean lifetime, it, of its light bulbs is 44 months. The standard deviation of these lifetimes is 5 months. Fifty bulbs are selected at random, and their mean lifetime is found to be 45 months. Can we conclude, at the 0.05 level of significance, that the mean lifetime of light bulbs made by this manufacturer differs from 44 months? Perform a two-tailed test. Then fill in the table below Carry your intermediate computations to at...
A manufacturer claims that the mean lifetime, u, of its light bulbs is 52 months. The standard deviation of these lifetimes is 6 months. Fifty bulbs are selected at random, and their mean lifetime is found to be 50 months. Can we conclude, at the 0.05 level of significance, that the mean lifetime of light bulbs made by this manufacturer differs from 52 months? Perform a two-tailed test. Then fill in the table below. Carry your intermediate computations to at...
A manufacturer claims that the mean lifetime, H, of its light bulbs is 48 months. The standard deviation of these lifetimes is 6 months. Fifty bulbs are selected at random, and their mean lifetime is found to be 49 months. Can we conclude, at the 0.1 level.of signficance, that the mean lifetime of light bulbs made by this manufacturer differs from 48 months? Perform a two-tailed test. Then fill in the table below. Carry your intermediate computations to at least...
The average lifetime of smoke detectors that a company manufactures is 5 years, or 60 months, and the standard deviation is 6 months. Find the probability that a random sample of 35 smoke detectors will have a mean lifetime between 59 and 62 months. Assume that the sample is taken from a large population and the correction factor can be ignored. Round the final answer to four decimal places and intermediate z-value calculations to two decimal places P (59 <...
imited A manufacturer claims that the mean lifetime, H, of its light bulbs is 52 months. The standard deviation of these lifetimes is 6 months. Nine bulbs are selected at random, and their mean lifetime is found to be 51 months. Assume that the population is normally distributed. Can we conclude, at the 0.05 level of significance, that the mean lifetime of light bulbs made by this manufacturer differs from 52 months? Perform a two-tailed test. Then fill in the...
The manufacturer of the ColorSmart-5000 television set claims 95 percent of its sets last at least five years without needing a single repair. In order to test this claim, a consumer group randomly selects 352 consumers who have owned a ColorSmart-5000 television set for five years. Of these 352 consumers, 310 say their ColorSmart-5000 television sets did not need a repair, whereas 42 say their ColorSmart-5000 television sets did need at least one repair. Determine the sample size needed in...
A manufacturer daims that the mean lifetime, H, of its light bulbs is 43 months. The standard deviation of these lifetimes is 8 months. Seventy bulbs are selected at random, and their mean lifetime is found to be 44 months. Can we conclude, at the 0.01 level of significance, that the mean lifetime of light bulbs made by this manufacturer differs from 43 months? Perform a two-tailed test. Then fill in the table below. Carry your intermediate computations to at...
3. value: 10.00 points The manufacturer of the ColorSmart-5000 television set claims 95 percent of its sets last at least five years without needing a single repair. In order to test this claim, a consumer group randomly selects 352 consumers who have owned a ColorSmart-5000 television set for five years. Of these 352 consumers, 310 say their ColorSmart-5000 television sets did not need a repair, whereas 42 say their ColorSmart-5000 television sets did need at least one repair. (a) Find...
Most questions answered within 3 hours.
-
The random variable X is exponentially distributed, where X
represents the time it takes for a...
asked 12 minutes ago -
a) Write a verilog module for 1:4 Demultiplexer using verilog
primitives.
b) Design 1-to-4 DEMUX using...
asked 7 minutes ago -
MATLAB
write a MATLAB function (1) output a third-order polynomial
function with the coefficients as the...
asked 19 minutes ago -
A z-score
communicates a raw score’s "relative standing"
under the normal curve in relation to:
asked 28 minutes ago -
An object is vibrating on a spring with the following equation
of motion:
?=(30 ??)cos((2?)/(160)?)
a)...
asked 27 minutes ago -
Vulcan Flyovers offers scenic overflights of Mount St. Helens,
the volcano in Washington State that explosively...
asked 30 minutes ago -
If organizations do not adapt fast enough and move incrementally
from the twentieth-century model to the...
asked 31 minutes ago -
A helium balloon with 2.5L of gas has a gauge pressure of 10,000
Pa. The balloon...
asked 35 minutes ago -
What is responsible for Jupiter's enormous magnetic field?
asked 50 minutes ago -
At the end of the year, a company offered to buy 5,000 units of
a product...
asked 52 minutes ago -
Implement C++ program for each of the following.
Let D = [-48, -14, -8, 0, 1,...
asked 1 hour ago -
Consider a labor market in which LD = 400 – 4W and LS = 250 +...
asked 1 hour ago