Question
A process produces bags of refined sugar. The weights of the contents of these bags are...
A process produces bags of refined sugar. The weights of the contents of these bags are normally distributed with a standard deviation of 1.2 ounces. The contents of a random sample of twenty five bags had a mean weight of 19.8 ounces. Find a 98% confidence interval for the true mean weight for all bags of sugar produced by the process. interpret the results
Homework Answers
Answer #1
Not the answer you're looking for?
Similar Questions
A manufacturing process produces bags of cookies. The distribution of content weights of these bags is...
A manufacturing process produces bags of cookies. The
distribution of content weights of these bags is Normal with mean
15.0 oz and standard deviation 1.0 oz. We will randomly select
n bags of cookies and weigh the contents of each bag
selected.
Which of the following statements is true with respect to the
sampling distribution of the sample mean, ¯xx¯?
According to the law of large numbers, if the sample size,
n, increases, ¯xx¯ will tend to be closer to...
A sample of 15 small bags of Skittles was selected. The mean weight of the sample...
A sample of 15 small bags of Skittles was selected. The mean
weight of the sample of bags was 2 ounces and the standard
deviation was 0.12 ounces. The population standard deviation is
known to be 0.1 ounces. (Assume the population distribution of bag
weights is normal)
a) Construct a 95% confidence interval estimating the true mean
weight of the candy bags. (4 decimal places
b) What is the margin of error for this confidence interval?
c) Interpret your confidence...
Bags of a certain brand of potato chips say that the net weight of the contents...
Bags of a certain brand of potato chips say that the net weight
of the contents is 35.6 grams. Assume that the standard deviation
of the individual bag weights is 5.2 grams.
A quality control engineer selects a random sample of 100 bags.
The mean weight of these 100 bags turns out to be 33.6 grams.
Use this information to answer the questions below.
1. We can use a normal probability model to represent the
distribution of sample means for...
Potato chip bags are labeled as containing 9 ounces of potato chips. To determine the accuracy...
Potato chip bags are
labeled as containing 9 ounces of potato chips. To determine the
accuracy of this label, a simple random sample of 37 bags was
taken. The sample mean was 8.73 ounces and the sample standard
deviation was 0.18 ounces. Construct a 98 %
confidence interval for the population mean weight of bags of
potato chips.
a) Give the critical
value, ??.
b) Compute the
standard error, ?? ̅.
c) Calculate the
maximal margin of error, ?.
d)...
A sample of 18 small bags of the same brand of candies was selected. Assume that...
A sample of 18 small bags of the same brand of candies was
selected. Assume that the population distribution of bag weights is
normal. The weight of each bag was then recorded. The mean weight
was 3 ounces with a standard deviation of 0.12 ounces. The
population standard deviation is known to be 0.1 ounce.
NOTE: If you are using a Student's t-distribution, you may
assume that the underlying population is normally distributed. (In
general, you must first prove that...
An engineer has conducted an experiment on the weight of bags of sugar that come off...
An engineer has conducted an experiment on the weight of bags of
sugar that come off the filling line. A sample of size 50 is
collected, and it is found to have a sample mean of 16.147 lbs and
a standard deviation of 0.87 lbs. Calculate the 95% Confidence
Interval on the weight of the bags of flour, and use it to
determine if it is believable that the population mean for the
weight of all bags of flour produced...
Potatoes - Samples: Suppose the weights of Farmer Carl's potatoes are normally distributed with a mean...
Potatoes - Samples: Suppose the weights of
Farmer Carl's potatoes are normally distributed with a mean of 7.9
ounces and a standard deviation of 1.2 ounces.
Suppose Carl bags his potatoes in randomly selected groups of 6.
What percentage of these bags should have a mean potato weight
between 7.5 and 8.5 ounces? Enter your answer as a
percentage rounded to one decimal place.
%
The weights of bags of frozen vegetables packaged at a factory are normally distributed with a...
The weights of bags of frozen vegetables packaged at a factory
are normally distributed with a mean weight of 2.46 lbs and a
standard deviation of 0.25 lbs. For quality control purposes, a
random sample of 33 bags is chosen once per day, and weighed. Let
?⎯⎯⎯⎯⎯ be the random variable representing the mean weight of the
bags.
a. ?⎯⎯⎯⎯⎯ is normally distributed with a mean of ______ and a
standard error of the mean ______. Round your answer to...
A sample set of weights of bags of baby carrots in pounds are 1.14, 0.91, 1.05,...
A sample set of weights of bags of baby carrots in pounds are
1.14, 0.91, 1.05, 1.01, 0.84, 1.02, 1.03, 1.06, 0.98, and 1.02.
Assume the population of weights are normally distributed. Find a
95% confidence interval for the mean population weight of all bags
of baby carrots. Use only the appropriate formula and/or
statistical table in your textbook to answer this question.
Negative amounts should be indicated by a minus sign. Report your
answer to 2 decimal places, using...
A company distributing coffee produces coffee bags of whose weight is normally distributed with a mean...
A company distributing coffee produces coffee bags of
whose weight is normally distributed with a mean of 11.9 oz. and a
standard deviation of 0.2 oz.
What is the probability a bag weights less than 12
oz?
0.3085
b) 0.6915
c)
0.8413
d) 0.9987
If you fill the bag with more than 12.2 oz of coffee it
will overflow. What percentage of bags overflows?
0.13%
b) 6.68%
c)
99.87%
d) 93.32%
Current regulations of the state...
ADVERTISEMENT
Need Online Homework Help?
Get Answers For Free
Most questions answered within 1 hours.
ADVERTISEMENT
Active Questions
asked 2 minutes ago
asked 17 minutes ago
asked 19 minutes ago
asked 22 minutes ago
asked 25 minutes ago
asked 25 minutes ago
asked 53 minutes ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago