Friday
May 29, 2015

# Posts by mark

Total # Posts: 1,324

statistics
Thank you so much Kuai. This helped me out
April 27, 2014

statistics
If 30% of people in an area are registered voters and 15 people are selected at random from the area: A. what is the probability that at most 3 out of the 15 people are registered voters? B. could we have used the normal approximation to the binomial in part b? Explain why or ...
April 27, 2014

statistics
A basketball scout randomly selected 144 players and timed how long each player took to perform a certain drill. The times in this sample were distributed with a mean of 8 minutes. The population standard deviation was known to be 3 minutes. A. find the critical value for a 95...
April 27, 2014

Math
That does not help calculate the standard of error.
April 25, 2014

Math
LongLast Inc. produces car batteries. The mean life of these batteries is 60 months. The distribution of the battery life closely follows the normal probability distribution with a standard deviation of 8 months. As part of its testing program, LongLast tests a sample of 25 ...
April 25, 2014

Algebra
Calculate 5670 + 3.5% = 198.45 \$198.45 + 5670 = \$5865.45 Hope this helps.
April 25, 2014

statistics
In which of the following situations would it not be appropriate to use a paired t-test to analyze the data? A. A marriage therapist believes that many couples have different perspectives regarding the state of their marriages, prior to the start of couples therapy. In order ...
April 24, 2014

statistics
The average age for licensed drivers in a county is µ= 42.6, σ= 12 and the distribution is approximately normal. A county police officer was interested in whether the average age of those receiving parking tickets in the county differed from that of the average age ...
April 19, 2014

chemistry
How many calories will 45 grams of water release when it changes fom 85c to 30c?
April 17, 2014

Algebra
x over 2x-5 - 5 over 6x-15
April 12, 2014

Math
Their are 18 green blocks in a bag.their are 3 white blocks for every 2green blocks.witch proportion can be used to find w,the total number of white blocks in the bag?
April 7, 2014

My willy bird is 6 inches and has a mass, M, of 2.1kg. During penetration, it reaches a force or 15.0 N with a coefficient of friction 0.75. Calculate its rotational velocity given no respect to time. How much work is done in a thirty second period?
April 7, 2014

Economics
Suppose Bill is on a low-carbohydrate diet. He can eat only three foods: Rice Krispies, cottage cheese, and popcorn. The marginal utilities for each food are tabulated below. Bill is allowed only 167 grams of carbohydrates daily. Rice Krispies, cottage cheese, and popcorn ...
March 24, 2014

Physics
Find the total change in the internal energy of a gas that is subjected to the following two-step process. In the first step the gas is made to go through isochoric heating until it gains 5363 J and its pressure is 2.92 105 Pa. In the second step it is subjected to isobaric ...
March 24, 2014

Math
Two angles are complementary. Twice one angle plus the other is 96. Find the measure of each angle.
March 23, 2014

Science
If the density of a steel hammer 7gm/cm on earth what would the density be on a spaceship?
March 20, 2014

Science
How many minutes are required for a radio signal to travel for Earth to a space station in Mars if the planet Mars is 7.83 x 10 to the 7th km from Earth?
March 20, 2014

Physics
A 11 kg box slides 4.2 m down a frictionless ramp and then collides with a spring whose spring constant is 250 N/m. What is the maximum compression of the spring? I got 1.35 m but it is incorrect. Any help would be great!
March 19, 2014

math
i put 4000.00 in savings. at end of 3 years the account earned 960.00 in simple interest at what simple interest rate did the account grow? please show me the work.
March 14, 2014

ECE
Flannel board stories encourage the language arts skill of __________ more than other skills. A. listening B. writing C. speaking D. reading
March 12, 2014

Chemistry
Potassium permanganate (KMnO4) solutions are used for the determination of iron in samples of unknown concentration. As a laboratory assistant, you are supposed to prepare 700. mL of a 0.200 M KMnO4 solution. What mass of KMnO4, in grams, do you need?
March 9, 2014

Physics-Kinetic Energy
Can someone help me solve this kinetic energy problem? A 2050 kg truck is traveling east through an intersection at 2.3 m/s when it is hit simultaneously from the side and the rear. (Some people have all the luck!) One car is a 1200 kg compact traveling north at 4.5 m/s. The ...
March 9, 2014

Algebra
What is the domain of this relation? Is it a function? {(2, 7), (0, 3), (-4, 3)} Select one: a. {7, 3}; yes b. {2, 0, -4}; no c. {7, 3}; no d. {2, 0, -4}; yes
February 20, 2014

Algebra
Determine which point, if any, is in the solution half-plane of the two variable inequality. 3x – 2y < 6 Select one: a. (4, 1) b. (-1, -5) c. (1, 0) d. (2, -2
February 20, 2014

math
an open rectagular box with length of 6 feet, width of 4 feet and height of 2.5 feet is to be painted on all exterior sides, including the bottom, with a special waterproof coating. Each gallon of this special coating covers 12 square feet of surface area and costs \$36.00. The...
February 18, 2014

which of these sentences shows correct comma usage? A.Yes i enjoy writing poetry in my spare time.(I PICK THIS) B.After,a while,i suppose,the boy became less scared of the new girl. C.By the end of the first stanza,i had guessed that the new kid was a girl.(I PICKED THIS) D....
February 4, 2014

please check answers 7.which of these sentences shows correct comma usage? A.Yes i enjoy writing poetry in my spare time.(I PICK THIS) B.After,a while,i suppose,the boy became less scared of the new girl. C.By the end of the first stanza,i had guessed that the new kid was a ...
February 4, 2014

english(2 Qs)
please answer these 2 questions. please 7..which of these sentences shows correct comma usage? A.Yes i enjoy writing poetry in my spare time. B.After,a while,i suppose,the boy became less scared of the new girl. C.By the end of the first stanza,i had guessed that the new kid ...
February 4, 2014

Social Studies (Ms. Sue)
I only see one answer choice
February 1, 2014

Math
A carpenter has several boards of equal length. He cuts 3/5 of each board. After cutting the boards the carpenter notices that he has enough pieces left over to make up the same length as 4 of the original boards. How many boards did the carpenter start with?
January 27, 2014

College Algebra
A compound inequality uses one of the words and or or. Explain how you will determine whether to use the intersection or union when graphing the solution set
January 25, 2014

math
its about phones like att has a monthly fee of \$39.99/mo and 450 anytime minutes which are included in the plan and any additional minutes are \$0.45/min Sprint-has a monthly fee \$34.99/mo and 450 anytime minutes which are included in the plan and any additional minutes are \$0....
December 31, 2013

Mth 209
Choose the TRUE statement(s) about 2 . I) 2 is between 1 and 2 II) 2 is between 1.3 and 1.4 III) 2 is between 1.4 and 1.5
December 16, 2013

college algebra
A circular vent pipe with a diameter of 5.5 inches is place on a roof tht has a slope of 1/4. Find an equation of the ellipse that should be cut from the roof so that the pipe will fit. roound parameters to the nearest hundreth.
December 10, 2013

College Algebra
A circular vent pipe with a diameter of 5.5 inches is place on a roof tht has a slope of 1/4. Find an equation of the ellipse that should be cut from the roof so that the pipe will fit. roound parameters to the nearest hundreth.
December 10, 2013

Math
Well, first you have to find out how many are fielders. If 8 are pitchers and 5 are catchers, then the rest are fielders. Simply subtract 8 and 5 from 24. Then you take that number and subtract 5 from it. (Since difference means to subtract. And you're looking for the ...
December 9, 2013

combinatorical mathematics
At Brilli's zoo, she is trying to train a monkey to learn how to count. The monkey is given a stack of cards, numbered 1 to 30, in some random order. The cards are laid out from left to right. Each time the monkey moves the card numbered i+1 to the immediate right of the ...
December 9, 2013

algebra 1
how you get the answer for c?
December 1, 2013

algebra 1
This homework question was removed due to a copyright claim submitted by the National Network of Digital Schools Management Foundation (NNDS).
December 1, 2013

algebra 1
Which is the equation of the line that contains the points (0,3) and (-2,4)?
December 1, 2013

algebra 1
Look at the pattern that follows. Which expression represents this pattern algebraically? 8, 17, 26, 35, 44, …
November 27, 2013

algebra 2
The Butler family drives home from a vacation. The table of values that follows shows the relationship between the number of gallons, g, of gasoline their car uses and the distance in miles, d, the car is from home: Gallons of Gasoline Used (g) Distance from Home (d) 1 144 2 ...
November 26, 2013

algebra 1
A manufacturer is cutting plastic sheets to make rectangles that are 11.125 inches by 7.625 inches. Each rectangle’s length and width must be within 0.005 inches. A. Plot the acceptable range of lengths on the number line that follows: B. Write an inequality to represent ...
November 24, 2013

algebra 1
thats what he had for an answer but he thinks a reasonable answer is w= -3 why though? and why is it incorrect?
November 23, 2013

algebra 1
for |4-3w|>8
November 23, 2013

algebra 1
This homework question was removed due to a copyright claim submitted by the National Network of Digital Schools Management Foundation (NNDS).
November 23, 2013

Spanish
Are my answers correct? If I am wrong please don't give me the answer. Just ask me to try again. My choice marked by *** 1. Yo ______ en Chile y él ______ en Argentina. ***estoy . . . está estamos . . . estoy está . . . está estoy . . . est&...
November 14, 2013

science
Any topic (writer's choice) Research paper Science 3 pages / 825 words Discipline: Science Type of service: Writing from scratch Format or citation style: APA
November 5, 2013

medicine
A physician performed an aspiration via thoracentesis on a patient in observation status in the hospital. The patient has advanced lung cancer with malignant pleural effusion. Later the same day, due to continued accumulation of fluid, the patient was returned to the procedure...
November 5, 2013

Statistics
A camera store sells 40 pairs of binoculars per week on average with a standard deviation of 6. What is the probability that the store will sell more than 52 pairs binoculars in any week?
October 21, 2013

If I divided 1.23x10^-10 and 1.4x10^-8, would my answer be 0.88x10^-18?
October 17, 2013

Math
If I divided 1.23x10^-10 and 1.4x10^-8, would my answer be 0.88x10^-18?
October 17, 2013

Science
What condition is needed for an experiment to have useful data?
October 17, 2013

Science
What condition is needed for an experiment to have useful data?
October 17, 2013

Science
What condition is needed for an experiment to have useful data
October 17, 2013

History
Well say you were applying into a college but you had 15 choices to choice from. However, you had to limit the choices to 5 due to expenses and how far it was from home. So you apply into all 5 colleges and you only get into 1 of those 5 colleges. You go to the college but ...
October 17, 2013

Science
What condition is needed for an experiment to have useful data?
October 17, 2013

Beginner French Work check
Hello! Just wondering if someone could check my work as there were a few areas that i'm not completely confident about. Thank you so much! Complete the sentence with the correct form of the verb in the future. Elle ___sera venu_____ (venir) chez moi ce soir. Nous ...
October 11, 2013

Intro to ethics 120
he outlawing of slavery and extending voting rights to women seem to indicate that ethics can have beneficial results. Give an example from the past that indicates a similar result or a current social policy that might be regarded as wrong, which therefore needs to be changed...
October 10, 2013

physics
Consider an ideal spring that has an unstretched length l0 = 3.9 m. Assume the spring has a constant k = 20 N/m. Suppose the spring is attached to a mass m = 6 kg that lies on a horizontal frictionless surface. The spring-mass system is compressed a distance of x0 = 1.7 m from...
October 10, 2013

biology
D. control
October 8, 2013

economics
Speculate as to why price leadership is legal in the U.S. whereas price fixing is not?
October 7, 2013

French
Thank you for the quick response! I have a PC with Windows. Also, i am having a hard time understanding what Direct and In Direct Pronouns i should use when they are in the same sentence. Elle demande le menu au serveur. Elle ___(1)___ ___(2)___ demande 1. le 2. lui Could you ...
September 26, 2013

French
Hello, I am taking a French course online and i just want someone to check some of my work from time to time to make sure i am doing it correctly and to give me any tips they may have. What i have copy and pasted below took me awhile to get so i just wanted a second opinion on...
September 26, 2013

Quantum physics
September 8, 2013

Quantum physics
Anon: 3rd choice foê Q3
September 8, 2013

Quantum physics
Someone know answers for 7th and 10th? Attempts are finishing :(
September 8, 2013

Literature
I'm not sure how to write it. I've learned about irony, foreshadowing, symbolism, etc.
September 6, 2013

Literature
HELP PLEASE!!! Can you state the aspect of style revealed in this quote so I can write a paper? "Clyde if I could only die. That would solve all this. And I have prayed and prayed that I would lately, yes I have. For life does not mean as much to me now as when I first ...
September 6, 2013

literature
HELP PLEASE!!! Can you state the aspect of style revealed in this quote so I can write a paper? "Clyde if I could only die. That would solve all this. And I have prayed and prayed that I would lately, yes I have. For life does not mean as much to me now as when I first ...
September 6, 2013

English
The flames slowly grow stronger. Is the word "stronger" used as an adverb modifying the verb "grow."
September 3, 2013

English
Except for a dog he is traveling completely alone. How many adverbs are there? I know "completely " is one . Does it modify is traveling?
September 3, 2013

English
In this sentence -- In this story, a nameless character goes outdoors on a terrible cold day in the Yukon. How many adverbs are there and what do they modify? Is it just "outdoors" and it modifies "goes"
September 3, 2013

Literature
I really need HELP!!! I need a quote for personal connection in American Tragedy by Theodore Dreiser and an explanation of the quote.
August 31, 2013

Stats
A study found that for adults the general self-efficacy scale mean score was 35 and standard deviation was 12. A group of clients (n=14) was measured for their general self-efficacy with the same measure and found having 40 with standard deviation of 20. A group of therapist ...
August 17, 2013

programming Visual Command Prompt
This is the question that I have to do can someone please help?! QUESTION 2 - MANDATORY The file savings.txt contains the names and savings of 3 Bank customers in the last four months. Month1 Month2 Month3 Month4 Dennis Daly 480 620 57 73 Brid Jones 82 61 550 65 Mary Henry 49 ...
August 14, 2013

Psychology
A!! thank you!
July 26, 2013

Psychology
Phyllis is anxious to ride the parachute drop at the park. Her friend, Betsy, feels faint at the thought and does not enjoy watching others ride. These different reactions demonstrate that _______________.   A. perception of stress varies among individuals&#...
July 26, 2013

Psychology
Ralph was the third child born to a family of seven. At times his mother confused his name with those of his five brothers. His was never the tallest, the strongest, the fastest, or the smartest in school. He was also too little to do something or too old to be "acting ...
July 26, 2013

Math
In the Capital Asset Pricing Model, the market risk premium is estimated over a long period of time because: A. more data is always better than less. B. a longer holding period gives a more reliable estimate because it is, in effect, a larger sample size. C. almost all ...
July 21, 2013

Math
In the Capital Asset Pricing Model, the market risk premium is estimated over a long period of time because: more data is always better than less. a longer holding period gives a more reliable estimate because it is, in effect, a larger sample size. almost all investors hold ...
July 21, 2013

General Math
A. rx is the return for a market index such as the S&P 500 Index. B. rx is the return for the stock being analyzed for example, IBM s return if we are estimating IBM s beta. C. the slope measures the average return for the market portfolio for each percentage change in the ...
July 21, 2013

Finance
I think that it is B the risk rate of return plus a risk premium
July 21, 2013

Finance
A. as the highest return a risk-averse investor wants from an investment. B. as the risk-free rate of return plus a risk premium. C. as the historical rate of return plus a risk premium. D. as a comparison between the expected and historical rates of return
July 21, 2013

Maths
this question is incomplete.
July 20, 2013

Math
Brilli the ant has a block of cheese that is in the shape of an equilateral triangle. She is hosting a party, and has invited her two-legged house mates. She insists that all of her guests get a piece of cheese that is in the shape of an isosceles triangle. What is the maximal...
July 16, 2013

Math
In triangle ABC, D is the midpoint of BC. E is the foot of the perpendicular from C to AD. If CD=7√,DE=3√, what is the measure (in degrees) of ∠BED?
July 15, 2013

Math
Brilli the ant has a block of cheese that is in the shape of an equilateral triangle. She is hosting a party, and has invited her two-legged house mates. She insists that all of her guests get a piece of cheese that is in the shape of an isosceles triangle. What is the maximal...
July 15, 2013

Math
Let ABCDEF be an equiangular hexagon with perimeter 98 such that EF=2CD=4AB and BC=2FA. What is the length of EF?
July 15, 2013

Math
How many {(1,1),(1,−1),(2,0)}-lattice paths are there from the point (0,0) to the line x=8? Details and assumptions A lattice path is a path in the Cartesian plane between points with integer coordinates. A step in a lattice path is a single move from one point with ...
July 15, 2013

Physics
You bounce on a huge trampoline and start oscillating up and down with a period of 3 s. After a long while, you come to rest but the trampoline below you is displaced below its natural height. How much is the trampoline bent in m? Model the trampoline as a spring.
July 15, 2013

Math (algebra)
Let x and y be real numbers satisfying 4x^2+5y^2=1. Over all such pairs, let the maximum and minimum values of 2x^2+3xy+2y^2 be M and N respectively. If M+N+MN=a/b, where a and b are coprime positive integers, what is the value of a+b?
July 15, 2013

Essay
Can someone help me please I have to write a essay on if you won a million dollars and cannot spend it on yourself or family what would you do with it. I need help to start it just the opening line please
July 12, 2013

The squares of a 3×3 grid are filled with non-negative integers such that the sum of each row and the sum of each column is 7. How many different ways can the squares be filled? The numbers in each grid square does not need to be distinct. Rotations and reflections are ...
July 8, 2013

Physics (help steve)
no, it's wrong
July 8, 2013

Physics (help steve)
A boy is spinning on a chair and holding a paper bag so that it is horizontal, and perpendicular to the axis of the rotation. What should be the angular velocity of the boy in radians/second so that the bottom of the bag breaks? Details and assumptions Assume paper breaks at ...
July 8, 2013