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Tutors Answer Your Questions about Evaluation Word Problems (FREE)
Question 465438: For borrowers with good credit scores, the mean debt for revolving and installment accounts is $15,015 (BusinessWeek, March 20, 2006). Assume the standard deviation is $3,380 and that debt amounts are normally distributed.
What is the probability that the debt for a randomly selected borrower with good credit is more than $18,000 (to 4 decimals)?
What is the probability that the debt for a randomly selected borrower with good credit is less than $10,000 (to 4 decimals)?
What is the probability that the debt for a randomly selected borrower with good credit is between $12,000 and $18,000 (to 4 decimals)?
What is the probability that the debt for a randomly selected borrower with good credit is no more than $14,000 (to 4 decimals)?
Click here to see answer by edjones(7569)   |
Question 465513: For borrowers with good credit scores, the mean debt for revolving and installment accounts is $15,015 (BusinessWeek, March 20, 2006). Assume the standard deviation is $3,650 and that debt amounts are normally distributed.
What is the probability that the debt for a randomly selected borrower with good credit is more than $18,000 (to 4 decimals)?
What is the probability that the debt for a randomly selected borrower with good credit is less than $10,000 (to 4 decimals)?
What is the probability that the debt for a randomly selected borrower with good credit is between $12,000 and $18,000 (to 4 decimals)?
What is the probability that the debt for a randomly selected borrower with good credit is no more than $14,000 (to 4 decimals)?
Click here to see answer by edjones(7569) |
Question 465598: Ninety percent of the population in Woodville has carpet in their home. A marketer of carpet cleaner learned that, last year, 10% of the population with carpet purchased Foamy carpet cleaner. He also knows that 9.5% of the total population purchased it. What percentage of the population without carpet in their home purchased Foamy last year?
Click here to see answer by ewatrrr(10682)  |
Question 466052: Tracy's dog eats 8 ounces of dog food every day. How many pounds of dog food will her dog eat in 40 days?
So my math teacher said 320 pounds but i know that 16 ounces equal a pound and my teacher said that if the dog eats 8 ounces everday then in 40 days he will eat 40 times the amount the dog eats every day (this is true) but once my teacher did 8 times 40 he got 320 ounces and in the answer space wrote 320 pounds. I was wondering why he never converted the 320 ounces to pounds which would be 320/16 (i think)
please help... :)
Click here to see answer by solver91311(16897)  |
Question 466212: Many drugs used to treat cancer are expensive. BusinessWeek reported on the cost per treatment of Herceptin, a drug used to treat breast cancer (BusinessWeek, January 30, 2006). Typical treatment costs (in dollars) for Herceptin are provided by a simple random sample of 10 patients.
4,357 5,564 2,698 4,906 4,482
4,804 6,449 4,108 4,229 3,809
Develop a point estimate of the standard deviation of the cost per treatment with Herceptin (to 1 decimal).
Click here to see answer by Ryan O'Hara(46) |
Question 466213: If a taxicab driver charges $0.60 for the first 1/3 mile and $0.40 for each 2/5 mile, or part thereof, after that, a ride costing $3.80 could be at most how many miles long?
My problem intrinsically is how to tackle questions like these. If you would also show me a common methodology that would solve most, if not all of these types of problems, I will be eternally grateful.
Thank you.
Click here to see answer by Ryan O'Hara(46) |
Question 466211: The Democrat and Chronicle reported that 25% of the flights arriving at the San Diego airport during the first five months of 2001 were late (Democrat and Chronicle, July 23, 2001). Assume the population proportion is p = .25.
Calculate () with a sample size of 800 flights (to 4 decimals).
What is the probability that the sample proportion will be within +/- .03 of the population proportion if a sample of size 800 is selected (to 4 decimals)?
What is the probability that the sample proportion will be within +/- .03 of the population proportion if a sample of size 400 is selected (to 4 decimals)?
Click here to see answer by Ryan O'Hara(46) |
Question 466210: Business Week conducted a survey of graduates from 30 top MBA programs (Business Week, September 22, 2003). The survey found that the average annual salary for male and female graduates 10 years after graduation was $168,000 and $117,000, respectively. Assume the population standard deviation for the male graduates is $45,000, and for the female graduates it is $30,000.
What is the probability that a simple random sample of 40 male graduates will provide a sample mean within $10,000 of the population mean, $168,000 (to 4 decimals)?
What is the probability that a simple random sample of 40 female graduates will provide a sample mean within $10,000 of the population mean, $117,000 (to 4 decimals)?
In which of the preceding two cases, part (a) or part (b), do we have a higher probability of obtaining a sample estimate within $10,000 of the population mean?
What is the probability that a simple random sample of 100 male graduates will provide a sample mean more than $4,000 below the population mean (to 4 decimals)?
Click here to see answer by Ryan O'Hara(46) |
Question 466267: Polygons ABCD and AFGE are similar. AD = 12 and AE = 6. If AF = 7 what is the length of AB?
http://4.bp.blogspot.com/-ZrLpKpV4BZE/Tg0VwfZz1PI/AAAAAAAAAAM/cE0AV9wqtG8/s320/IMG_20110630_145004.jpg
There is a picture of my problem. Thank you!
-Dimitri
Click here to see answer by Love math(28) |
Question 466436: i really would appreciate some help with this problem. trains A and B are traveling in the same direction on parallel tracks. train A is traveling at 40 mph and train B is traveling at 50 mph. train A passes a station at 2:25 a.m. if train B passes the same station at 2:37 a.m.,at what time will train B catch up to train A?
Click here to see answer by mananth(12270)  |
Question 466436: i really would appreciate some help with this problem. trains A and B are traveling in the same direction on parallel tracks. train A is traveling at 40 mph and train B is traveling at 50 mph. train A passes a station at 2:25 a.m. if train B passes the same station at 2:37 a.m.,at what time will train B catch up to train A?
Click here to see answer by ccs2011(207)  |
Question 466528: Hi there!:)
I would like to ask some help with my word problem solving...If one could please help me with it..
The problem is:
The measure of an angle and its complement differ by 22. Find the angle and its complement.
I would like to thank the one who would help me in advance!:D
Click here to see answer by Theo(3464)  |
Question 466534: Good day!:)
I would like to ask some help regarding this word problem...If someone could help me ASAP...
Here's the problem:
The measure of an angle and its complement differ by 22. Find the angle and its complement.
Thank you in advance!:)
Click here to see answer by stanbon(57387) |
Question 466527: Good day!:)
I would like to ask for some help regarding my math homework..It is about Word Problems..
Here's the problem:
Find two rational numbers such that the second number if five more than three times the first number. The sum of numbers is 19.
Can someone please help me?:D
Thank you so much for your help in advance!:)
Click here to see answer by Earlsdon(6287) |
Question 466432: i seriously need some help with this problem! in 1993, the life expectancy of males in a certain country was 66.8 years. in 2000, it was 70.4 years. let E represent the life expectancy in year t and let t represent the number of years since 1993.
the linear function that fits the data is E(t) = ?t + ?
use the function to predict the life expectancy of males in 2003.
E(10) = ?
Click here to see answer by ankor@dixie-net.com(15660)  |
Question 466657: Here is my problem: Imagine you are in the market for a new home and are interested in a new housing community under construction in a different city.
The sales representative informs you that there are 56 houses for sale with two floor plans still available. Use x to represent floor plan one and y to represent floor plan two. Write an equation that illustrates the situation. This is what I come up with:
x=56/2 y=56/2
But it doesn't look right to me. Thank you in advance for your help.
Click here to see answer by stanbon(57387) |
Question 466635:
If Robert has a pack of matches that has 35 packs, and each pack has 113 matches. If he gives 13 packs away and 355 matches to his friends. How many matches does he had at first, and how many did he had left after giving some to his friends?
Click here to see answer by rrr2001(7) |
Question 466743: Please help me on this one. I get confused with Word Problems!!! Please help me :) Thanks so much!!!
J.Bond and E.Blofeld are driving speedboats in opposite directions after a failed attempt by the latter to blow up the world with a nuclear bomb. Mr.Bonds boat is going 25 MPH faster than Mr.Blofelds. After 3 hours they are 500 miles apart. How fast was each of them going?
Click here to see answer by rfer(12670) |
Question 466772: A dehydrated patient needs a 3.24% saline IV. Unfortunately, the hospital only has bags of 1% and 9% saline solutions. How many liters of each of these solutions should be mixed together to yield 5 liters of the desired concentration? Please show all your work.
Click here to see answer by Theo(3464) |
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