Question
In: Statistics and Probability
The chickens at Colonel Thompson's Ranch have a mean weight of 1850g, with a standard deviation...
The chickens at Colonel Thompson's Ranch have a mean weight of
1850g, with a standard deviation of
150g. The weights of the chickens are closely approximated by a normal curve. Find the percent of all chickens having weights more than 2066g or less than
1420g
g.
Solutions
orchestra answered 2 years agoRelated Solutions
Horses in a stable have a mean weight of 950 pounds with a standard deviation of...
Horses in a stable have a mean weight of 950 pounds with a standard
deviation of 77 pounds. Weights of horses follow the normal
distribution. One horse is selected at random.
a. What is the probability that the horse weighs less than 900
pounds?
b. What is the probability that the horse weighs more than
1,100 pounds?
c. What is the probability that the horse weighs between 900
and 1,100 pounds?
d. What weight is the 90th percentile? (round to...
Suppose cattle in a large herd have a mean weight of 1158lbs and a standard deviation...
Suppose cattle in a large herd have a mean weight of 1158lbs and
a standard deviation of 92lbs. What is the probability that the
mean weight of the sample of cows would differ from the population
mean by more than 12lbs if 55 cows are sampled at random from the
herd? Round your answer to four decimal places.
Suppose cattle in a large herd have a mean weight of 1158lbs and a standard deviation...
Suppose cattle in a large herd have a mean weight of 1158lbs and
a standard deviation of 92lbs . What is the probability that the
mean weight of the sample of cows would differ from the population
mean by less than 12lbs if 55 cows are sampled at random from the
herd? Round your answer to four decimal places.
Bags of potato chips have a mean weight of 6 ounces with a standard deviation of...
Bags of potato chips have a mean weight of 6 ounces with a
standard deviation of 0.2 ounces. There are 100 bags of potato
chips in a box.
(i) What is the probability that the total weight of the 100
bags is greater than 603 ounces?
(ii) A potato chip factory produces 1000 boxes of potato chips.
What is the probability that more than 70 of these boxes contain
more than 603 ounces of potato chips?
onuts have weight taht are normally distributed with a mean 80 grams and standard deviation of...
onuts have weight taht are normally distributed with a
mean 80 grams and standard deviation of 6 grams . they sold in
packeages containing 12 randomly selected donuts.
a) what percentage of the donuts wiegh more than 75 grams ?
b)what is the probablity that the total weigh of the donuts package
is less than 900 grams?
In a sample of 51 babies, the mean weight is 21 pounds and the standard deviation...
In a sample of 51 babies, the mean weight is 21 pounds and the
standard deviation is 4 pounds.
Calculate a 95% confidence interval for the true mean weight of
babies. Suppose we are interested in testing if the true mean
weight of babies is 19.4 vs the alternative that it is not 19.4
with an alpha level of .05. Would this test be significant? Explain
your answer.
Perform the t test and use a t-table to get the p-value
the mean weight of loads of rock is 47.0 tons with a standard deviation of 8.0...
the mean weight of loads of rock is 47.0 tons with a standard
deviation of 8.0 tons. if 24 loads are chosen at random for a
weight check, find the probability that the mean weight of those
loads is less than 46.5 tons. assume that the variable is normally
distributed.
The mean weight of a fire ant worker is 3.11 mg with a standard deviation of...
The mean weight of a fire ant worker is 3.11 mg with a
standard deviation of 0.49 mg. Let us assume that the weight of any
fire ant is independent from the weight of any other fire ant. A
typical fire ant colony contains 240,000 fire ant workers. Suppose
we look at the weight of each ant in a typical fire ant colony. Let
M be the random variable representing the mean weight of all the
worker ants in the...
The mean weight of a fire ant worker is 3.11 mg with a standard deviation of...
The mean weight of a fire ant worker is 3.11 mg with a standard
deviation of .49 mg. Suppose we randomly select 14 different fire
ant workers having weights F1, F2, , F14. Let S = F1 + F2 + ...+F14
and let M = S/14. This means S is the sample sum and M is the
sample mean of the selected ant weights. (Note: random selection
means F1 F14 are independent.). Assume the Fis are normally
distributed.
a) What...
The mean weight of students from a certain university is 70 kg with a standard deviation...
The mean weight of students from a certain university is 70 kg
with a standard deviation
of 17 kg. i.
ii. iii.
Assume that the weights of students in the university are
normally distributed.
What is the probability that the weight of a randomly chosen
student is greater than 100 kg?
What is the probability that the weight of a randomly chosen
student is between 60 kg and 80 kg?
If you were to take a sample of 16 students,...
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