Mathematics - 1 October 2006

Trying to conduct an eigenvector decompsition on a correlation matrix that contains categorical, continuous and binary variables. I am trying to reduce the number of varibles I use for a regression, and am trying to identify the principle components.

2006-10-01 17:09:36 · 1 answers · asked by Ben M 2

Five pirates raid the ship of a wealthy bureaucrat and steal his trunk of gold pieces. By the time they get the trunk aboard, dusk has fallen, so they agree to split the gold the next morning.
But the pirates are all very greedy. During the night one of the pirates decides to take some of the gold pieces for himself. He sneaks to the trunk and divides the gold pieces into five equal piles, with one gold piece left over. He puts the gold piece in his pile, hides it, puts the other four piles back in the trunk, and sneaks back to bed.One by one, the remaining pirates do the same. They sneak to the trunk, divide the coins into five piles, with always one coin left over. Each pirate puts the gold coin in his own pile, hides it, and puts the remaining four piles back in the trunk.

Please simplify and show work.

2006-10-01 17:09:33 · 2 answers · asked by Jeffrey Z 1

Java

2006-10-01 17:02:23 · 3 answers · asked by randollas 1

A motorboat goes 8 miles upstream in the same amount of time it is able to go 12 miles downstream. The river flows at 3 miles per hour, what is the speed of the boat in still water.

2006-10-01 16:53:37 · 4 answers · asked by Denise L 1

82% of items are regular and 77% of regular items are of the top quality. What is the probability that a randomly picked regular item is of the top quality?

Please show all work!

2006-10-01 16:48:29 · 4 answers · asked by Anonymous

Take a square with side length x. Connect the midpoints of each side to their non adjacent verticies so that an octagon forms inside the square. What is the area of the octagon in relation to the original square?

2006-10-01 16:38:36 · 3 answers · asked by DougieWang 1

which of these is a proper Fraction?
15/2 6/6 4/17 11/10

2006-10-01 16:38:11 · 2 answers · asked by craig s 1

Find an equation of a line that passes through the point (4,2) and is perpendicular to the line with the equation

5X-4Y=8

My teacher marked it wrong on my test, can someone answer so i can see if I actually got it right?

2006-10-01 16:22:46 · 7 answers · asked by beast 1

Find the sum and product of the roots of 6x^3 - 9x^2 + x = 0

Please help by showing work.

2006-10-01 16:19:44 · 6 answers · asked by elguapo_marco_2008@sbcglobal.net 3

2006-10-01 16:19:26 · 7 answers · asked by ELVIA 2

2006-10-01 16:11:41 · 8 answers · asked by craig s 1

A multiple-choice test has 7 questions each with 5 responses, one of which is correct. The lowest number of correct answers a student must obtain in order to receive a grade of A is 5. Find the probability of receiving an A by randomly and independently guessing at the correct answer.

2006-10-01 16:05:08 · 1 answers · asked by RunsLikeElijah 3

In testing a new drug, researchers found that 3% of all patients using it will have a mild side effect. A random sample of 14 patients using the drug is selected. Find the probability that:

a. none will have this mild side effect.
b. at least one will have this mild side effect.
Select your answer below. Possible answers appear in the form [ answer to a., answer to b.].

2006-10-01 16:02:55 · 2 answers · asked by RunsLikeElijah 3

Which statement is not true for a binomial distribution with n = 10 and p = 1/20 ?



1. The mean equals .50000

2. The probability that x equals 1 is .31512

3. The number of trials is equal to 10

4. The highest probability occurs when x equals .50000

5. The standard deviation is .68920

2006-10-01 16:01:39 · 3 answers · asked by RunsLikeElijah 3

x-5/8=7/8

m/6-7=2/3

2/3+3k/4=71/12

4+m/8=3/4

a/2+1/5=17

1/2+7x/10=13/20

9y/14+3/7=9/14

1/5+3w/15=4/5

2006-10-01 15:59:03 · 4 answers · asked by No Name 1

2006-10-01 15:46:08 · 8 answers · asked by Anonymous

y = x^4(x^2+4)
y=-x^4+6
y=-x^5+4x^2

2006-10-01 15:43:08 · 3 answers · asked by Anonymous

2006-10-01 15:31:03 · 4 answers · asked by tabbie 1

i got a question about algebra II, you don't need to do the problem i just need to know if it's linear...?
if this is the table:
_____________________

Distance
30
55
89
112
134
189
201



Force
12.60
17.06
21.70
24.34
26.62
31.62
32.61
________________

then what would the kind of function represented be?

linear, exponintional, square root, ect.

2006-10-01 15:16:22 · 3 answers · asked by Anonymous

Microsoft founder Bill Gates will be the first person in history to be worth $100 billion.

According to the U.S Bureau of Engraving and Printing, each currency note is 2.61 inches wide, 6.14 inches long, and 0.0043 inches thick. Each note weighs about 0.0043 troy ounces (12 troy ounces equals one pound.) The $100 bill has been the largest denomination of United States currency in circulation sonce 1969.

2006-10-01 15:09:11 · 8 answers · asked by puppylover4254 1

GAS OIL WATER

HOUSE HOUSE HOUSE

each utility to each house and lines cannot cross or touch. I have been tring to figure this out since 1981.

2006-10-01 15:03:04 · 5 answers · asked by dharmamonster72 2

Compute the smallest real x for which
(3^2x+2)+1= (3^x+2)+3^x

[ 3 to the 2x+2 power +1 is equal to 3 to the x+2 power+3 to the x power] i hope my question is understandable. thank you again for the help.

2006-10-01 14:56:03 · 5 answers · asked by Carpe Diem (Seize The Day) 6

Determine two geometric sequences whose first three terms are 18x-9, 2x+8, and x-1.

2006-10-01 14:36:33 · 4 answers · asked by gg 4

Five pirates raid the ship of a wealthy bureaucrat and steal his trunk of
gold pieces. By the time they get the trunk aboard, dusk has fallen, so they
agree to split the gold the next morning.
But the pirates are all very greedy. During the night one of the pirates
decides to take some of the gold pieces for himself. He sneaks to the trunk
and divides the gold pieces into five equal piles, with one gold piece left
over. He puts the gold piece in his pile, hides it, puts the other four
piles back in the trunk, and sneaks back to bed.
One by one, the remaining pirates do the same. They sneak to the trunk,
divide the coins into five piles, with always one coin left over. Each
pirate puts the gold coin in his own pile, hides it, and puts the remaining
four piles back in the trunk.

Please show work?

2006-10-01 14:31:48 · 3 answers · asked by Jeffrey Z 1

A survey of college students was conducted during final exam week to find out how many cups of offee studends consume each day. The mean of the distribution was 4 and the standard deviation was 1.5 assume its normally distributed.

1) What percentage drank more then 7 cups of coffee?
2) What percentage of students drank between 2 and 7 cups of coffee?
3) What percentage of students drank more than 2 cups of coffee?4) If someone is at the 70th perecentile how many cups of coffee did they drink?
5)What is the percentile rank of someone who drank 4 cups of coffee?
6)What percentage of students drank between 1 and 2 cups of coffee?
7)How many students drank 8 cups or fewer? suppose N=100
8)What %age of students drank fewer than 2.5 cups of coffee?

Show the work please.

2006-10-01 14:29:24 · 3 answers · asked by Greg 2

2006-10-01 14:10:48 · 19 answers · asked by psterling11 1

You have two spinners in front of you. Spinner “A” contains two spaces each of the numbers one, two, and three. Spinner “B” contains six spaces with one deuce each. You have spun both spinners 12 times each. Which one is more likely to give you a sum of 24 under these circumstances?

2006-10-01 14:04:45 · 11 answers · asked by blooutflash 3

2006-10-01 14:04:35 · 2 answers · asked by sandman 1

2006-10-01 14:03:06 · 7 answers · asked by Anonymous

2006-10-01 13:53:47 · 14 answers · asked by twinkie 1