A manufacturer of salad dressings uses machines to dispense
liquid ingredients into bottles that move along...
A manufacturer of salad dressings uses machines to dispense
liquid ingredients into bottles that move along a filling
line. The machine that dispenses dressings is working
properly when the mean amount dispensed is 8 ounces. The
population standard deviation of the amount dispensed is 0.15
ounce. A sample of 50 bottles is selected periodically,
and the filling line is stopped if there is evidence that the mean
amount dispensed is different from 8 ounces. Suppose
that the mean amount dispensed in a particular sample of 50 bottles
is 7.983 ounces.
Is there evidence that the population mean amount is different
from 8 ounces? (Use a 0.05 level of significance.)
Compute the p-value and interpret its meaning.
What is your answer in (a) if the standard deviation is 0.05
ounce?
What is your answer in (a) if the sample mean is 7.9525 ounces
and the standard deviation is 0.15 ounce?
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A manufacturer of salad dressings uses machines to dispense
liquid ingredients into bottles that move along a filling line. The
machine that dispenses dressings is working properly when the mean
amount dispensed is 8 ounces. The population standard deviation of
the amount dispensed is 0.15 ounce. A sample of 50 bottles is
selected periodically, and the filling line is stopped if there is
evidence that the mean amount dispensed is different from 8 ounces.
Suppose that the mean amount dispensed...
A manufacturer of chocolate candies uses machines to package
candies as they move along a filling line. Although the packages
are labeled as 8 ounces, the company wants the pack-ages to contain
a mean of 8.17 ounces so that virtually none of the packages
contain less than 8 ounces. A sample of 50 packages is selected
periodically, and the packaging process is stopped if there is
evidence that the mean amount packaged is different from 8.17
ounces. Suppose that in...
2. A manufacturer of chocolate candies uses machines to package
candies as they (4 pts) move along a filling line. The company
wants the packages to contain 8.1730 ounces of candy. A sample of
50 packages is randomly selected periodically and the packaging
process is stopped if there is evidence to show that the mean
amount is different from 8.1730 ounces tested at a 95.00%
confidence interval/level. In one particular sample of 50 packages,
the MEAN.S is equal to 8.1590...
A weapons manufacturer uses a liquid propellant that can get
mixed with another liquid to produce a contaminated cartridge. A
statistician found that 24% of the cartridges in the particular
lot were contaminated. Suppose you randomly sample (without
replacement) gun cartridges from this lot until you find a
contaminated one. Let x be the number of cartridges sampled until a
contaminated one is found. It is known that the probability
distribution for x is given by the formula shown below....
A manufacturer uses two machines to drill holes in pieces of
sheet metal used in engine construction. The workers who attach the
sheet metal to the engine become inspectors in that they reject
sheets so poorly drilled that they cannot be attached. The
production manager is interested in knowing whether one machine is
produces more defective drillings than the other machine. As an
experiment, employee mark the sheets so that the manager can
determine which machine was used to drill...