Question
A company that produces snack foods uses a machine to package 454 grams bags of potato...
- A company that produces snack foods uses a machine to package 454 grams bags of potato chips. A random sample of 75 bags of potato chips has a mean of 450 grams and standard deviation of 8.48 grams. Perform a hypothesis test at the 1% significance level to determine if the machine is working properly.
Homework Answers
Answer #1
Solution :
Givan that ;
= 454
= 450
= 8.48
n = 75
This is the two tailed test .
The null and alternative hypothesis is ,
H0 :
= 454
Ha :
454
Test statistic = z
= (
- 
) /
/ 
n
= ( 450 - 454 ) / 8.48 /
75
= -4.09
The test statistic = -4.09
Not the answer you're looking for?
Similar Questions
A local company makes snack-size bags of potato chips. The company produces batches of 400 snack-size...
A local company makes snack-size bags of potato chips. The
company produces batches of 400 snack-size bags using a process
designed to fill each bag with an average of 2 ounces of potato
chips. However, due to imperfect technology, the actual amount
placed in a given bag varies. Assume the population of filling
weights is normally distributed with a standard deviation of 0.1
ounce. The company periodically weighs samples of 10 bags to ensure
the proper filling process. The last...
Crispy-Snax is a popular brand of potato chip. The company sells a Halloween sized snack bag...
Crispy-Snax is a popular brand of potato chip. The company sells
a Halloween sized snack bag of chips. These snack bags are intended
to contain 24g of potato chips. The company want to verify that the
packaging and labelling is correct and that the bags do not contain
less than 24g. Company scientists take a sample of 12 bags and find
the sample mean to be 23.1g. Assuming that the standard deviation
of the bag filling is 0.5g, do a...
A manufacturer of potato chips would like to know whether its bag filling machine works correctly...
A manufacturer of potato chips would like to know whether its
bag filling machine works correctly at the 402 gram setting. It is
believed that the machine is underfilling or overfilling the bags.
A 13 bag sample had a mean of 409 grams with a standard deviation
of 13 Assume the population is normally distributed. A level of
significance of 0.1 will be used. Specify the type of hypothesis
test.
A manufacturer of potato chips would like to know whether its bag filling machine works correctly...
A manufacturer of potato chips would like to know whether its
bag filling machine works correctly at the 443 gram setting. It is
believed that the machine is underfilling the bags. A 15 bag sample
had a mean of 434 grams with a standard deviation of 17. A level of
significance of 0.1 will be used. Assume the population
distribution is approximately normal. Determine the decision rule
for rejecting the null hypothesis. Round your answer to three
decimal places.
A manufacturer of potato chips would like to know whether its bag filling machine works correctly...
A manufacturer of potato chips would like to know whether its
bag filling machine works correctly at the 445445 gram setting. It
is believed that the machine is underfilling the bags. A 1313 bag
sample had a mean of 444444 grams with a standard deviation of
1212. A level of significance of 0.010.01 will be used. Assume the
population distribution is approximately normal. Determine the
decision rule for rejecting the null hypothesis. Round your answer
to three decimal places.
A manufacturer of potato chips would like to know whether its bag filling machine works correctly...
A manufacturer of potato chips would like to know whether its
bag filling machine works correctly at the 424.0 gram setting. It
is believed that the machine is underfilling the bags. A 39 bag
sample had a mean of 419.0 grams. A level of significance of 0.05
will be used. Determine the decision rule. Assume the standard
deviation is known to be 13.0. Enter the decision rule.
Packaged foods sold at supermarkets are not always the weight indicated on the package. Variability always...
Packaged foods sold at supermarkets are not always the weight
indicated on the package. Variability always crops up in the
manufacturing and packaging process. Suppose that the exact weight
of a " 14-ounce" bag of potato chips is a random variable that
has an approximately normal distribution with mean μ equals = 14
ounces and standard deviation σ = 0.75 ounce. If 6000 " 14-ounce"
bags of potato chips are chosen at random, estimate the number of
bags with the...
Packaged foods sold at supermarkets are not always the weight indicated on the package. Variability always...
Packaged foods sold at supermarkets are not always the weight
indicated on the package. Variability always crops up in the
manufacturing and packaging process. Suppose that the exact weight
of a "10-ounce" bag of potato chips is a random variable that has
an approximately normal distribution with mean u=10 ounces and
standard deviation σ=0.75 ounce. If 2000 "10-ounce" bags of
potato chips are chosen at random, estimate the number of bags
with the following weights.
(a)
8.58ounces or less
(b)...
A coffee company sells bags of coffee beans with an advertised weight of 454 grams. A...
A coffee company sells bags of coffee beans with an advertised
weight of 454 grams. A random sample of 20 bags of coffee beans has
an average weight of 457 grams. Weights of coffee beans per bag are
known to follow a normal distribution with standard deviation 7
grams. (a) Construct a 95% confidence interval for the true mean
weight of all bags of coffee beans. (Instead of typing ±, simply
type +-.) (1 mark) (b) Provide an interpretation of...
A manufacturer of potato chips would like to know whether its bag filling machine works correctly...
A manufacturer of potato chips would like to know whether its
bag filling machine works correctly at the 414 gram setting. It is
believed that the machine is underfilling the bags. A 11 bag sample
had a mean of 421 grams with a standard deviation of 28. assume the
population is normally distributed. a level of signifigance of 0.02
will be used. specify the type of hypothesis test.
left tailed
right tailed
two tailed
ADVERTISEMENT
Need Online Homework Help?
Get Answers For Free
Most questions answered within 1 hours.
ADVERTISEMENT
Active Questions
asked 15 minutes ago
asked 17 minutes ago
asked 24 minutes ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 2 hours ago
asked 2 hours ago