Question

(A) The weight of cans of vegetables is normally distributed with a mean of 1000 grams and a standard deviation of 50 grams. What is the probability that the sample mean of weight for 10 randomly selected cans is more than 1040? (B) The age of vehicles registered in a certain European country is normally distributed with a mean of 98 months and a standard deviation of 15 months. What is the probability that the sample mean of age for a sample of 36 vehicles is between 100 and 102 months?

Answer #1

QUESTION 1
The weight of cans of Salmon is normally distributed with mean μ
9.92 and the standard deviation is σ0.285. We draw a random sample
of n= 64 cans. What is the sample Error?
Tip: sample error = σ/sqrt(n) and answer with 4 decimals.
QUESTION 2
The weigh of cans of salmon is randomly distributed with mean
=13 and standard deviation = 1.826. sample size is 38. What is the
z-value if we want to have the sample mean...

1 The weight of cans of fruit is normally distributed with a
mean of 1,000 grams and a standard deviation of 25 grams. What
percent of the cans weigh 1075 grams or more?
1B. What percentage weighs between 925 and 1075 grams?
2. The weekly mean income of a group of executives is $1000 and
the standard deviation of this group is $75. The distribution is
normal. What percent of the executives have an income of $925 or
less?
2B....

QUESTION 4 The weigh of cans of salmon is randomly distributed
with mean =6.05 and standard deviation = .18. The sample size is
36. What is the probability that the mean weight of the sample is
more than 6.02? 4 decimals
QUESTION 5 The weigh of cans of salmon is randomly distributed
with mean =6.05 and standard deviation = .18. The sample size is
36. What is the probability that the mean weight of the sample is
between 5.99 and...

Assume that the weight of marbles are normally distributed with
mean 172 grams and standard deviation 29 grams. a) If 4 marbles are
selected, find the probability that its mean weight is less than
167 grams. b) If 25 marbles are selected, find the probability that
they have a mean weight more than 167 grams. c) If 100 marbles are
selected, find the probability that they have a mean weight between
167 grams and 180 grams.

The weight of the large bag of M&M’s is approximately
normally distributed with mean of ? = 1176 grams and a standard
deviation of ? = 11.3 grams. Suppose 12 of these bags are randomly
selected.
(a) What is the mean and the standard deviation of the sampling
distribution (SDSM)? Use the correct symbols.
(b) What is the probability that 12 randomly sampled large bags
will have a sample mean weight less than 1170 grams? Round to 4
decimals.
(c)...

The
weight of oranges are normally distributed with a mean weight of
150 grams and a standard deviation of 10 grams. in a sample of 100
oranges, how many will weigh between 130 and 170 grams?

The weights of ice cream cartons are normally distributed with a
mean weight of 8 ounces and a standard deviation of 0.5 ounce. (a)
What is the probability that a randomly selected carton has a
weight greater than 8.12 ounces? (b) A sample of 36 cartons is
randomly selected. What is the probability that their mean weight
is greater than 8.12 ounces? (a) The probability is nothing.
(Round to four decimal places as needed.)

The lifetime of a certain type of battery is normally
distributed with a mean of 1000 hours and a standard deviation of
100 hours. Find the probability that a randomly selected battery
will last between 950 and 1050 hours

a certain tropical fruit has weights that are normally
distributed, with a mean of 521 grams and a standard deviation of
12 grams. If you pick 15 fruits at random, what is the probability
that the mean weight of the sample will be between 520 grams and
521 grams? Round your answer to three decimal places.

The weight of 1000 students in a local university are normally
distributed with a mean of 68.5kg and a standard deviation of
2.7kg.
What is the probability that their weight is less than 63.0kg?
What is the probability that their weight is greater than
74.0kg?
What is the probability that their weight is less than
69.0kg?
What is the probability that their weight is between 67.5kg and
71.0kg?

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