MeadWestVaCo.collected data from a sample of 1000 trees and recorded the “pounds of pulp” per tree...
MeadWestVaCo.collected data from a sample of 1000 trees and recorded the “pounds of pulp” per tree and determined that the sample was normally distributed with a mean of 200 pounds and a standard deviation of 25 pounds.
The probability of a pulp weighing less than 250 pounds is
|
a. |
0.9772 |
|
b. |
0.4772 |
|
c. |
0.0528 |
|
d. |
0.5000 |
e. None of the above answers is correct.
Homework Answers
Add Answer to:
MeadWestVaCo.collected data from a sample of
1000 trees and recorded the “pounds of pulp” per tree...
A Christmas tree farmer planted 100 acres of trees five years ago. These trees now have...
A Christmas tree farmer planted 100 acres of trees five years ago. These trees now have a mean height of 80 inches with a standard deviation of 5 inches and follows a normal distribution. a) Suppose one tree is picked at random. What is the probability that it will be less than 75 inches? Shade the region in the graph below that corresponds to the probability. Label the mean on the horizontal axis. b) Suppose a random sample of 25...
Suppose it is known that heights of 8 year old Unrisunas trees are approximately normally distributed...
Suppose it is known that heights of 8 year old Unrisunas trees are approximately normally distributed with a mean of 75.5" and standard deviation or = 8.3". [5 pts) What is the probability that a randomly selected tree is taller than 74”? [2 pts] If we sample 14 of those trees, what is the standard deviation of the distribution of sample means for this sample? [4 pts] If you sample 14 trees, what is the probability that the mean height...
The weights of college football players are normally distributed with a mean of 200 pounds and...
The weights of college football players are normally distributed with a mean of 200 pounds and a standard deviation of 50 pounds. b. What is the standard score of the sample mean of 170 pounds? c. What is the probability that the mean of a sample of size 15 will be more than 170 pounds? d. What is the standard score of a sample mean of 220 pounds? e. What is the probability that the mean of a sample of size...
support #BLM! 7. Suppose it is known that heights of 8 year old Christmas trees are...
support #BLM! 7. Suppose it is known that heights of 8 year old Christmas trees are approximately normally distributed with a mean of 75.5" and standard deviation o = 8.3". a) [5 pts] What is the probability that a randomly selected tree is taller than 74”? b) [2 pts) If we sample 14 of those trees, what is the standard deviation of the distribution of sample means (ox) for this sample? c) [4 pts) If you sample 14 trees, what...
The heights of pecan trees are normally distributed with a mean of 10 feet and a...
The heights of pecan trees are normally distributed with a mean of 10 feet and a standard deviation of 2 feet. Show all work. Just the answer, without supporting work, will receive no credit. (a) What is the probability that a randomly selected pecan tree is between 9 and 12 feet tall? (Round the answer to 4 decimal places) (b) Find the 80th percentile of the pecan tree height distribution. (Round the answer to 2 decimal places) (a) For a...
Tree heights: Cherry trees in a certain orchard have heights that are normally distributed with mean...
Tree heights: Cherry trees in a certain orchard have heights that are normally distributed with mean = 117 inches and standard deviation o = 14 inches. Use the TI-84 PLUS calculator to answer the following. Round the answers to at least four decimal places. (a) What proportion of trees are more than 129 inches tall? (b) What proportion of trees are less than 100 inches tall? (c) What is the probability that a randomly chosen tree is between 85 and...
Select the correct answer below: A sample mean of 20 miles per gallon and a sample...
Select the correct answer below: A sample mean of 20 miles per gallon and a sample standard deviation of 2 miles per gallon are obtained usin a simple random sample of 16 vehicles from a large group of vehicles, which have approximately normally distributed fuel consumption rates. A simple random sample of 23 dogs is taken from the dogs within a county with approximately normally distributed weights. The sample mean is 33 pounds, the sample standard deviation is 4 pounds,...
Newborn elephant calves usually weigh between 200 and 250 pounds-ntil October 2006, when an Asian elephant...
Newborn elephant calves usually weigh between 200 and 250 pounds-ntil October 2006, when an Asian elephant at the Houston (Texas) Zoo gave birth to a male calf weighing in at a whopping 384 pounds! Mack (like the truck) is believed to be the heaviest elephant calf ever born at a facility accredited by the Association of Zoos and Aquariums. If, indeed, the mean weight for newborn elephant calves is 236 pounds with a standard deviation of 45 pounds, what is...
1) The weights of bowling balls are normally distributed with mean 11.5 pounds and standard deviation...
1) The weights of bowling balls are normally distributed with mean 11.5 pounds and standard deviation 2.7 pounds. A sample of 36 bowling balls is selected. What is the probability that the average weight of the sample is less than 11.00 pounds? Write only a number as your answer. Round to 4 decimal places (for example 0.0048). Do not write as a percentage. 2) A survey of high school students revealed that the numbers of soft drinks consumed per month...
The heights of 1000 students are approximately normally distributed with a mean of 174.5 centimeters and...
The heights of 1000 students are approximately normally distributed with a mean of 174.5 centimeters and a standard deviation of 6.9 centimeters. Suppose 200 random samples of size 25 are drawn from this population and the means recorded to the nearest tenth of a centimeter. Determine (a) the mean and standard deviation of the sampling distribution of X; (b) the number of sample means that fall between 171 and 177 cm.
Suppose it is known that heights of 8 year old Unrisunas trees are approximately normally distributed with a mean of 75.5" and standard deviation or = 8.3". [5 pts) What is the probability that a randomly selected tree is taller than 74”? [2 pts] If we sample 14 of those trees, what is the standard deviation of the distribution of sample means for this sample? [4 pts] If you sample 14 trees, what is the probability that the mean height...
support #BLM! 7. Suppose it is known that heights of 8 year old Christmas trees are approximately normally distributed with a mean of 75.5" and standard deviation o = 8.3". a) [5 pts] What is the probability that a randomly selected tree is taller than 74”? b) [2 pts) If we sample 14 of those trees, what is the standard deviation of the distribution of sample means (ox) for this sample? c) [4 pts) If you sample 14 trees, what...
Tree heights: Cherry trees in a certain orchard have heights that are normally distributed with mean = 117 inches and standard deviation o = 14 inches. Use the TI-84 PLUS calculator to answer the following. Round the answers to at least four decimal places. (a) What proportion of trees are more than 129 inches tall? (b) What proportion of trees are less than 100 inches tall? (c) What is the probability that a randomly chosen tree is between 85 and...
Select the correct answer below: A sample mean of 20 miles per gallon and a sample standard deviation of 2 miles per gallon are obtained usin a simple random sample of 16 vehicles from a large group of vehicles, which have approximately normally distributed fuel consumption rates. A simple random sample of 23 dogs is taken from the dogs within a county with approximately normally distributed weights. The sample mean is 33 pounds, the sample standard deviation is 4 pounds,...
Newborn elephant calves usually weigh between 200 and 250 pounds-ntil October 2006, when an Asian elephant at the Houston (Texas) Zoo gave birth to a male calf weighing in at a whopping 384 pounds! Mack (like the truck) is believed to be the heaviest elephant calf ever born at a facility accredited by the Association of Zoos and Aquariums. If, indeed, the mean weight for newborn elephant calves is 236 pounds with a standard deviation of 45 pounds, what is...
The heights of 1000 students are approximately normally distributed with a mean of 174.5 centimeters and a standard deviation of 6.9 centimeters. Suppose 200 random samples of size 25 are drawn from this population and the means recorded to the nearest tenth of a centimeter. Determine (a) the mean and standard deviation of the sampling distribution of X; (b) the number of sample means that fall between 171 and 177 cm.
Most questions answered within 3 hours.
-
Industry: Telecommunications in India
Here, you need to discuss the sources of the growth pattern
and...
asked 52 minutes ago -
Hydrobromic acid
dissolves solid iron according to the followiaung reaction:
Fe(s)+2HBr(aq)→
FeBr2(aq)+ H2(g)
Part A. What...
asked 2 hours ago -
Verify the following vector identity in SPHERICAL
COORDINATES.
div(curl(A)) = 0
asked 4 hours ago -
The work function (Φ) for a metal is 7.50×10-19 J.
What is the longest wavelength (nm)...
asked 5 hours ago -
1. Would the following procedural changes cause the
calculated mass percent Ni2+ ion in Ni(NH3)nCl2 to...
asked 6 hours ago -
1. Why does the voltage of the capacitor vary with frequency?
where does this missing voltage...
asked 7 hours ago -
p p please write each step out clearly
3. A manager of a company is considering...
asked 6 hours ago -
On October 1, Ebony Ernst organized Ernst Consulting; on October
3, the owner contributed $83,540 in...
asked 7 hours ago -
A.)As an electron moves through a region of space, its speed
decreases from 9.60 × 106...
asked 7 hours ago -
In java with the netbeans program do:
Through object programming
Create a class "ContadorP", which is...
asked 8 hours ago -
Pattern Corporation acquired all of Science
Company's outstanding stock on January 1, 2016 for $600,000 cash....
asked 8 hours ago -
Here are all accounts Tyler Co. maintains.
Tax expenses $4,750
Common stocks $48,840
SG&A expenses $2,500...
asked 8 hours ago