ruth

This page lists questions and answers that were posted by visitors named ruth.

Questions

The following questions were asked by visitors named ruth.

Suppose X1;X2;...;X5 is a random sample from a n(0; variance) distribution. define U = X1+X2+X3+X4; V = (X2)^2+(X3)^2+(X4)^2+(X5)^2 and W = U/sqrtV. (a) Name the distribution of U/4 and V/(variance) and give the values of their parameters. (b) (i) Compute...

A normal population has an expected value of 60 and a variance of 30. Use the central limit theorem to determine what the sample size should be such that the mean has a probability of 90% to fall between the values 58 and 62. One concept of the Central Li...

Let X1;X2;X3;...;X6 be a random sample from a distribution with the following probability desity function: Fx(x) = (1+4x)/3 for 0<x<1 = 0 for x=<0; x>=1. (a) Determine the joint p.d.f of Y1 and Y6 where Y1<Y2<...Y6 are the order statistics. (b) Let R= Y6-...

ogranelle that modifies,packages and transport material out of the cell describes an organism that can exist onlly as a group of cells one of the structures a cell uses t o live ,grow and reproduce Ruth, Shondra, Jimmy -- We do not do your homework for yo...

ogranelle that modifies,packages and transport material out of the cell describes an organism that can exist onlly as a group of cells one of the structures a cell uses t o live ,grow and reproduce Why have you posted all these questions under different n...

where is the setting of charollet web

1285 hrs to manufacture first unit - expects to achieve a 92% unit learning curve - how many hours would be required to manufacture units 51-100

c be the curve of the equation y=3x^5+10x^4-10x^3+60x^2+25x-5. among all points on the curve over the interval [-1,3], find the coordinates of the highest slope and lowest slope

why was italy the forst to use indo arabic numerals?

.A ______________ _ is a signal to which an organism responds

Selena received a $42 commission for selling a computer for $1400. What percent is her commission?

translate into an algebraic expression 34 multiplied by d I don't understand this

Determine the probability of rolling a sum of 9 or an odd number with two number cubes.

Application Practice Answer the following questions. If appropriate, use Equation Editor to show your work. First, save this file to your hard drive by selecting Save As from the File menu. Click the white space below each question to maintain proper form...

t squared plus 10t plus 16

what is 2 meters long or 2 meters high that you can find in a home

how do computer viruses work?

list the integers between -5 and 2, inclusive.

{y < -4/3} interval notation this is what I got... (-∞, -4/3)

8-4( 2-3)^2 ÷ √4

(-1/6 + √4/9 )^2

write the opposite, reciprocal, and absolute value of each number . A: -1/2 #: 4 C: 0

simplify : 1/2( 2x-1)-(3x-3/2)

x=9/10 4x+y=3 4(9/10) +y= 3

1. "bedside terror" is a play on the common phrase "beside manner", which is used to describe how well doctors relate to their patients. what is the effect of replacing the word manner with terror?

When scoring the MMPI 2, how can you intrepret it and what is the diagnosis according to Axis II. The scores are as follow: ?= 13 L = 3 F=19 k=8 hS=14 d=30 hY=32 pD=24 Mf=37 Pa=12 Pt=25 Sc=21 Ma=22 Si=32 Pleae forward results/intrepretation

if apr is 7.3% daily and haad $400 1st 10 days, 1500 next 10 and 600 next 10 how much intrest was earned at end of month

My algebra question is; The ordered pair (3,0) is found? I don't have a clue. Can you help please? Thank you, Ruth

lyf style of hiv and aids

which has more number of particles, 3g of acetone or 3g of acetic acid

If a random sample of size n = 65 is drawn, find ¦Ìx, ¦Ò x and P(24 ¡Ü x ¡Ü 26). (Round ¦Ò x to two decimal places and the probability to four decimal places.) ¦Ìx = Correct: Your answer is correct.

what is the money value of 0.098

if h(x)=sinπ/x then find hderivative(4)

what is the 3rd derivative of f(x)=x^2 e^x^2

what is the potential energy of 4 point charges each of value Q at the corners of a square of side length a.

lnx monotonicity

Solutioin A is sodiun hydroxide prepared by dissolving 2.0g in 250cm what is molar concentration of sodium hydroxide

a parallel plate capacitor has an area of 5cm^2 and a capacitance of 3.5PF. the capacitor is connected to a 12v battery .after the capacitor is completely charge up the battery is removed. a)what must be the separation of the plates and the charge density...

a manufacturer wants to design an open box that has a square base and a surface area of 48sq units what dimension will produce a box with a maximum volume?

find the drift velocity of the electrons in the copper wire (there are 8.5*10^28 free electrons per m^3 in copper)

the radius r of a sphere is increasing at a rate of 3cm/min. find the rate of change of the area when r=3cm

find dy/dx assuming that y is differentiable with respect to x and x is also differentiable with respect to y. a)xy+x^2y^2=x^3y^3 b)xsiny+ycosx=xy

the radius r of a right circular cone is increasing at a rate of 2cm/min.the height h of the cone is related to the radius by h=3r.find the rate of change of the volume when r=6cm

a spherical ballon is inflated with gas at the rate 20cm^3 min. how fast is the radius of the ballon changing at the instant when the radius is 2cm

calculate the value of the resistor that will give a total resistance of 4 ohms if it is connected in parallel with a 12 ohm resistor.

calculate the maximum working current of an appliance rated at 2.4kw with an operating voltage of 240v

1)a galvanometer has a resistance of 40 ohm and is of 3 mA full-scale deflection.how would you modify it to act as a 0-5 A ammeter? 2)the galvanometer described in question 1 is to be converted into a 0-5 V voltmeter. a)when the voltmeter is connected to...

how many electrons drift past a point on for 10 minutes current is 0.2 A.the charge on one electrons 1.6*10^-1

the reaction A+3B->2C+D is first order with respect to reactant A and second order with respect to reactant B if the concentration of A is doubled the concentration of B is halfed and the rate of the reaction would -------by a factor of --------

classical conditioning , develop analogy for industry

conflict has always been a part of our lives, especially in the decision making processes. write down a case of multiple approach-avoidance conflict that you have experienced personally. how did you react? do not forget to include all the variance of this...

how the organization of your choice goes about changing attitudes of their employees?

a galvanometer has a resistance 60 ohm and is of 5mA full scale deflection.how would you modify it so as to get 0-10V voltmeter

a student connects the ends of a pencil lead to a 6.0V supply and measures the current to be 8.6A.the lead is rod of graphite of length 7.5 cm and diameter 1.4mm. a)calculate the resistance of the pencil b)use this data to calculate the resistivity of gra...

an electron moves in the plane of paper toward the top of the page .a magnetic field is also in the plane of the page and directed toward the right .what is the direction of the magnetic force on the electron ?

a)find the charge to mass ratio for an electron accelerated through 600v in a magnetic field of strength 45mT where the speed of the electrons is 1.4*10^7m/s b)what is the percentage difference b/n your result and the accepted ratio with the value q=1.6*1...

acetic acid has a pka of 4.8 how many ml of 0.1M acetic acid and 0.1M sodium acetate are required to prepare 1L of 0.1M buffer with a PH of 5.8? solve

what kind of reactions require oxidizing agent(reduced or oxidized) for example SO3->SO4 does it require oxidizing or reducing agent why?

a conducting loop consisting of a half circle of radius r=0.2m and three straight sections the half circle lies in a uniform magnetic field B that is directed out of the page the field magnitude is given by B=(4t^2 + 2t + 3)T .w/r t is in second. an ideal...

prove that I=square root of (I^2avarage). using I=Iosin(wt)

consider a series R-C circuit consisting of a 30 ohm resistor and 20*10^-6F capacitor connected to a 100V,50Hz power supply.find the magnitude of the current and the angle by which the current leads the voltage.

The North African Maghreb states, dominated by the Atlas Mountains, do not include A. Libya. B. Algeria. C. Morocco. D. Tunisia.

Three bags of wheat,two bags of corn, and one bag of oats weigh the same as one bag of wheat,one bag of corn and five bags of oats,if two bags of corn and one bag of oats weights 25 pounds and one bags of corn weights 10 pounds,How much does one bag of wh...

Helium gas occupies a volume of 0.04 m 3 at a pressure of 2 x 10 5 Pa (Nm -2 ) and temperature of 300 K. Calculate (i) the mass of the helium. (ii) the r.m.s. speed of its molecules. (iii) the r.m.s. speed at 432 K when the gas is heated at constant press...

What separatation method used to separate silver chloride (solid))and sodium trioxonitrate

Assume x and y have 5:3 profit sharing ratio respectivly and a new member enters by taking 1/5 from x and 1/3 from y.what will be the new ratio of the three people?

a candy mixture is made from two kinds of candy one kind costs twice as much per kg as the other kind.$10 worth of the less expensive candy is mixed with $8 worth of the more expensive candy to make 7kg of the mixture what is the price per kg of each kind...

Express 4.050505... as a fraction

express 7.179179... as a fraction

a contractor needs two men and 5 litres of paint to paint on a fenced wall that is 40m by 3m in 9 hours. how many men and how much paint does he need to paint a fenced wall 20m by 12m in 3 hours

Importance of reflection of sound waves

the sum of two different numbers is 40 . if the smaller number is divided by 4 and the larger number by 12 the sum of the quotients is 6.find the larger number

If (a+b)^2 = a^2 + 6b +b^2 ,what is the value of a?

the H.C.Of two numbers is 7and their L.C.M is 140.If one of the numbers is 28,find the other number

Two fractions have the same denominator,15. The difference between the fractions is 2/5,and the result of dividing one of them by the other is 4/7. What are the fractions?

describe the force board experiment to show how to obtain the resultant of two non-parallel coplanar forces acting at a point.

calculate the total vapour pressure of mixture of methanol(64g) and ethanol(92g) at 298K given that the pure vapour pressure of methanol is 90mmHg and ethanol is 45mmHg (C=12, H=1, O=16)

what are the limitations of depression of freezing point

in a class of 50 student,18 offered mathematics, 21 offered chemistry while 16 offered biology, 7 student offered mathematics and biology, 9 student offered chemistry and biology while 5 student offered the three subject combination. a) find the numbers o...

perform the indicated operation and express your result In a standard form i) (4+3i) + (6+4i) ii) 3 + 4i/6+3i

find the modulus argument and principal argument of each of the following a) i b) -√5

a plane leaves an airport P 10 degrees south,60 degrees east and flies due north at 800km/hr.find its position after 24hrs

a plane leaves an airport P 10 degrees south,60 degrees east and flies due north at 800km/hr .(a)find its position after 24hrs. (b)the plane turns and flies at the same speed due west to reach Q longitude 12 degrees west.find the distance it has travelled...

Answers

The following answers were posted by visitors named ruth.

thesis statement

okay i got it right... list three rational numbers between 1 and 2 ?

that's between 1 and 2 ?

I don't know why I got at the end -.75

i think you are wrong because my homework is online its a program and it says that you get y=-7/12 which i am really confused with this part i have done like three problems back to back and i still get this part worng

im guessing scared of the hospital room or the people in it the doctors or even the other patients in room .

find the mass percent of CuSO4 in a solution whose density is 1.30 g/ml and whose molarity is 1.36 M

2x e^x^2+x^2 ex^2

at the centre or one of corners

so it will be kq(4Q/a/2)

can you add one more step am not just sure

where did 8 come from

ohhhh ya sorry I get it

okai now I have the idea I will do myself from now on and for this 20cm^3/min=4π(2cm)^2dr/dt

if B is halved it should be 1.5 not 1/8 right

what about 2Br^- ===>Br2

A restaurant offers a new promotion of 20% off,the original price of cheese pizza,which is $12 before the promotion 250 pizzas were sold each day.after the promotion the sales of pizza increase an average of 18% more per day. How much more or less does th...

33. An automobile tire is rated to last for 50,000 miles. Estimate the number o revolutions the tire will make in its lifetime.

. If Lesley’s mother has the genotype BB and her father has the genotype bb, what is Lesley’s genotype? What is her phenotype?

Divide 52728 by the smallest number so that the quotient is a perfect cube

the question is : Divide 52728 by the smallest number so that the quotient is a perfect cube

how do we get the 4x/5 and 2y/3

Their brains are more active than that of adults because they can grab things faster than adults . Infacr they are tableresas

plz where are u from Reiny

I don't understand what u mean by matching up the terms

I don't understand

I don't get the calculations

We are not clear about the answer?