Question

(a) This
sample of 46 has a mean value of x, which
belongs to a sampling distribution. Find the shape of this sampling
distribution.

(b) Find the mean of this sampling distribution. (Give your answer correct to nearest whole number.)

grams

(c) Find the standard error of this sampling distribution. (Give your answer correct to two decimal places.)

(d) What is the probability that this sample mean will be between 599and 603? (Give your answer correct to four decimal places.)

(e) What is the probability that the sample mean will have a value less than 595? (Give your answer correct to four decimal places.)

(f) What is the probability that the sample mean will be within 2 grams of the mean? (Give your answer correct to four decimal places.)

skewed
rightapproximately
normal skewed
leftchi-square

(b) Find the mean of this sampling distribution. (Give your answer correct to nearest whole number.)

grams

(c) Find the standard error of this sampling distribution. (Give your answer correct to two decimal places.)

(d) What is the probability that this sample mean will be between 599and 603? (Give your answer correct to four decimal places.)

(e) What is the probability that the sample mean will have a value less than 595? (Give your answer correct to four decimal places.)

(f) What is the probability that the sample mean will be within 2 grams of the mean? (Give your answer correct to four decimal places.)

Answer #1

The local bakery bakes more than a thousand 1-pound loaves of
bread daily, and the weights of these loaves varies. The mean
weight is 1.2 lb. and 2 oz., or 601 grams. Assume the standard
deviation of the weights is 25 grams and a sample of 46 loaves is
to be randomly selected.
(a) This sample of 46 has a mean value of x, which belongs to
a sampling distribution. Find the shape of this sampling
distribution.
skewed right
approximately...

The local bakery bakes more than a thousand 1-pound loaves of
bread daily, and the weights of these loaves varies. The mean
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deviation of the weights is 26 grams and a sample of 50 loaves is
to be randomly selected.
(a) This sample of 50 has a mean value of x, which
belongs to a sampling distribution. Find the shape of this sampling
distribution.
skewed right
approximately...

The local bakery bakes more than a thousand standard loaves of
bread daily, and the weights of these loaves follow a normal
distribution. The long term mean weight is 482 grams and the
standard deviation of the weights is 18 grams.
a) An individual loaf is measured and weighs 478 grams. What is the
probability that an individual loaf will weigh less than
478grams.
b) What is the sampling distribution of the mean weight of loaves
if samples of size...

The amount of fill (weight of contents) put into a glass jar of
spaghetti sauce is normally distributed with mean μ = 841
grams and standard deviation of σ = 14 grams.
(a) Describe the distribution of x, the amount of fill
per jar.
skewed right normal skewed left
chi-square
(b) Find the probability that one jar selected at random contains
between 836 and 856 grams. (Give your answer correct to four
decimal places.)
(c) Describe the distribution of x,...

The amount of fill (weight of contents) put into a glass jar
of spaghetti sauce is normally distributed with mean μ = 855 grams
and standard deviation of σ = 15 grams.
(a) Describe the distribution of x, the amount of fill per
jar.
skewed right
normal
skewed left
chi-square
(b) Find the probability that one jar selected at random
contains between 841 and 862 grams. (Give your answer correct to
four decimal places.)
(c) Describe the distribution of...

4.39 Weights of pennies: The distribution of weights of United
States pennies is approximately normal with a mean of 2.5 grams and
a standard deviation of 0.03 grams. Use Normalcdf as needed. (a)
What is the probability that a randomly chosen penny weighs less
than 2.4 grams? 0.0004 Correct (please round to four decimal
places) (b) Describe the sampling distribution of the mean weight
of 10 randomly chosen pennies. Mean: 2.5 Correct grams (please
round to one decimal place) Standard...

1/ A particular fruit's weights are normally distributed, with a
mean of 352 grams and a standard deviation of 28 grams.
If you pick 9 fruits at random, then 9% of the time, their mean
weight will be greater than how many grams?
Give your answer to the nearest gram.
2/A manufacturer knows that their items have a lengths that are
skewed right, with a mean of 7.5 inches, and standard deviation of
0.9 inches.
If 50 items are chosen...

The weights of newborn baby boys born at a local hospital are
believed to have a normal distribution with a mean weight of 3951
grams and a variance of 60,025 . If a newborn baby boy born at the
local hospital is randomly selected, find the probability that the
weight will be between 3485 and 4147 grams. Round your answer to
four decimal places.

A random sample of size n = 40 is selected from a binomial
distribution with population proportion p = 0.25. (a) What will be
the approximate shape of the sampling distribution of p̂?
approximately normal skewed symmetric Correct: Your answer is
correct. (b) What will be the mean and standard deviation (or
standard error) of the sampling distribution of p̂? (Round your
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correct. standard deviation 0.0685 Correct: Your answer...

A manufacturer produces 25-pound lifting weights. The lowest
actual weight is 24 pounds, and the highest is 26 pounds. Each
weight is equally likely so the distribution of weights is uniform.
A sample of 100 weights is taken.
Find the probability that the mean actual weight for the 100
weights is greater than 24.9. (Round your answer to four decimal
places.)

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