Wednesday
April 23, 2014

Posts by LEA


Total # Posts: 199

mth-stat-help-plz
In conducting a hypothesis test for the difference in two population means where the standard deviations are known and the null hypothesis is: o H : uA - uB ≥ 0 What is the p-value assuming that the test statistic has been found to be z = 2.52? A) 0.0059 B) 0.988...

math-true/false
9.)The actual weight of 2-pound sacks of salted peanuts is found to be normally distributed with a mean equal to 2.04 pounds and a standard deviation of 0.25 pounds. Given this information, the probability of a sack weighing more than 2.40 pounds is 0.4251. **TRUE OR FALSE??**...

math
Consider the following hypothesis statement using alpha = .05, and data from two independent samples: Ho: µ1 - µ2 = 0 Ha: µ1 - µ2 not equal to 0 X1 = 237, X2 = 218 ¬1 = 54, ¬2 = 63 n1 = 42, n2 = 35 a) Calculate the appropriate test stati...

MTH- STAT 201
Can someone please help how to solve this I keep getting the wrong answer so I am now freaking out and clueless 23) The following data show the average retirement ages for a random sample of workers in Boscov’s and a random sample of workers in ShopRite. Boscov’s: Sa...

math-stupid stat
A manufacturing firm is planning the initial public offering of its stock in order to raise sufficient capital to finance a new plant. With current earnings of $1.61 a share, the firm and its underwriters are contemplating an offering price of $21, or about 13 times earnings. ...

MATH-STAT
Cinemark Theaters knows that a certain hit movie ran an average of 84 days in each city, and the corresponding standard deviation was 10 days. The manager of the southeastern part of Dallas was interested in comparing the movie’s popularity in his region with that in all ...

math- stat 201
I got 1.66667 so we should hire a new consultant?

math- stat 201
A firm hires a pool of financial consultants to discuss portfolio recommendations with its clients. The CEO believes that another financial consultant should be hired if the average phone consultation exceeds 350 seconds. A random sample of 100 phone calls revealed a mean of 3...

statistics 201
A firm hires a pool of financial consultants to discuss portfolio recommendations with its clients. The CEO believes that another financial consultant should be hired if the average phone consultation exceeds 350 seconds. A random sample of 100 phone calls revealed a mean of 3...

History
Who financed the Middle, the South and the New England colonies?

Anatomy
It consists of a core of titin, forming a strand that continues across the I band to the Z line on that side

U.S.History
How are Primeval and Saga related to U.S. history. Also what does Saga mean?

To MS SUE
Can u please check my math answers

Math check my answers
K thank u

Math check my answers
Square root**

Math check my answers
Please check my answers on the following questions Simplify: (X^6)^1/2 = x^3 1000000^1/6 I don't know this one (64n^12)^-1/6 = 1/0.5n^2 (9n^4)^1/2. = 3n^2 36^3/2 = my answer is 2 in the index of the aware root of 36^3 343^-4/3 I don't know this one Thanks

chemistry
Express the following numbers in scientific notation. (c) 0.9589 (d) 745 (e) 74100 (f) 0.002031

chemistry
A 18.2 g sample of an unknown compound contains 0.7 g of oxygen. What is the percent by mass of oxygen in the compound?

math
find the number of 8 units to the right of -3

chemistry - thank you:)
What volume of H2SO4 0.04 M is required to completely neutralize 200 mL of Al(OH)3 0.02M?

CHEMISTRY HELP!!!
A silver ring is dropped in a solution of Pb(NO3)2 for a certain period. Will you find it intact? Explain.

chemistry
Can a solution of CrCl3 be stored in an aluminum container?

algebra 2
Students at a high school all took the same English test. The scores are approximately normally distributed with a mean of 77 and a standard deviation of 9. If 2500 students took the test, approximately how many scored above 86 or below 68%?

algebra 2
In a high school, 35% of the 3500 students participate in sports. The school board is proposing a participation fee to help with costs. To get student opinion, the school board randomly selects a committee of 6 students to join a discussion of the proposal. That is the probabi...

Albebra 2
A school wants to determine the average time it takes students to get to school. Every student coming off the bus is surveyed. What is the sampling method used? Does the sample have a bias?

algebra 2
In a cooler there are 8 bottles of grape juice and 12 bottles of orange juice. There are also 6 blueberry yogurts and 9 strawberry yogurts. If you grab a bottle of juice and a yogurt without looking, what is the probability that you get a grape juice and a blueberry yogurt?

algebra2
What are the mean, variance and standard deviation of these values? 62,41,54,60,49,58.

Algebra 2
A teacher is choosing 4 students from a class of 30 to represent the class at a science fair. In how many ways can the teacher choose the students?

Algebra 2
I keep coming up with 1 as the answer and thats not a choice?

Algebra 2
Susan keeps track of the number of tickets sold for each play presented at the community theater. Within how many standard deviations of th mean do all the values fall? 135, 71, 69, 80, 158, 152, 161, 96, 122, 118, 87, 85. 3 4 5 2

Algebra 2
What are the mean, variance, and standard deviation of these values? Round to the nearest 10th. 92, 97, 53, 90, 95, 98

algebra
Simplify 3x(x^2 + 6x - 8)

algebra
Thanks!

algebra
That's just the way the question was asked?

algebra
multiply using FOIL and identify values of a, b, & c. (5x +5)(6x - 8)

algebra
Simplify (uv)0 ______ (u3 v)2

Algebra
Simplify (x^-6)-3

Algebra
Simplify 6x - x^2 (x-3)

Algebra
Simplify (x-7)( x+7)

algebra 2
Can you find the error for me in this equation, find the explicit formula, evaluate the formula for n? I think the error is in the a2-a1 formula.and the -62.50. I know the pattern is 62.50 paid per month. Your uncle loaned you some money and did not charge interest. The amount...

algebra 2
what is the 6th term of the geometric sequence 2000, 800, 320,..../

algebra 2
Your uncle loaned you some money and did not charge interest. The amount you owe him at the end of each of the first 5 months is $937.50, $875.00, $760.00, and $687.00. If the pattern continues, how much will you still owe him at the end of one year?

Albebra 2
Are these correct? a1=(-3x1)2 +4=13 a2=(-3x2)2+4-40 a3=(-3x3)2+4=85 a4=(-3x4)2+4=148 a5=(-3x4)2+4=229 a6=(-3x4)2+4=328 The first six terms of the sequence are 13, 40, 85, 148, 229, 328 I keep coming up with these answers but there is suppose to be an error somewhere.

Algebra 2
What is a recursive definition for the sequence 3, 5, 9, 17, 33..... My answer was adding muliple of numbers, is this correct?

Algebra 2
Got it, thanks!

Algebra 2
What are the first 6 terms of the sequence with the explicit formula an=-3n2+4?

Analytic Geometry
Find the equation of the circle touching the lines x+2y=4, x+2y=2 and y=2x-5 Please I need help, its for my homework

Analytic Geometry
Find the equation of the circle with radius sqrt2 tangent to the line x+y=3 and having its center on the line y=4x

Analytic Geometry
Find the equation of a circle passing through (-1,6) and tangent to the lines x-2y+8=0 and 2x+y+6=0. Please I really need your help. I just do not know what to do.

Analytic Geometry
Find the equation of a circle passing through (3,7) and tangent to the line x-3y+8=0. Please, How do I solve this? Help me

Analytic Geometry
Find the equation of a circle passing through (3,7) and tangent to the line x-3y+8=0. Please, How do I solve this? Help me

Analytic Geometry
Find the equation of a circle passing through (3,7) and tangent to the lines x-3y+8=0 and y=3x. Please Help me solve this. Explain it to me slowly cause I am not really good with this

Analytic Geometry
Are you all using directed distance?

Biology
What is the probability that any two humans with the same parents will be identical(other than identical twins)for each parent's gametes?

Language Arts
What does it mean to write a paper in APA format?

chemistry
Water has a bent molecular shape, but what if water had a linear molecular shape would the molecule be polar or non-polar? Explain This is what I know pls correct me if I'm wrong. It would be nonpolar because it is symmetric so the charge is equally distributed.

chemistry
The formulas for ethane, ethene and ethyne are C2H6, C2H4, and C2H2 respectively. Rank this chemicals 1,2,3 (highest)in terms of strength of IMF and explain the structures of the three molecules. I rank these three based on the bond length so I got C2H2, C2H4, C2H6. I know the...

chemistry
what is the complete ionic equation for the double displacement of CuNO3(aq)+K2S(aq)

chemistry
Why is gas a chemical reaction not detectable by sight? Explain? my answer is because the atoms or molecules of matter in the gaseous state move freely among each other, and are, in most instances, packed more loosely than the molecules of the same substance in the solid or li...

Physics
A man on a 2m high ladder throws a ball in the air with an initial velocity of 22m/s. If the ball is not caught by the man and instead hits the ground, how long was it in the air and how high did it go?

arithmetic
lim x->0 (e^x^2 - 1)/(square root(1+sinx)- square root(cosx))

world geography
c best answer

world geography
c best answer

world geography
The answer is b please read your book carefully

Physics
1.64e12

stats
Test the significance of the correlation coefficient r at a=0.05 for the data below. X values 59, 65, 73, 80, 89 Y values 97, 102, 110, 117, 125 A) Accept p=0 because 60.81<3.18 B) Reject p=0 because 61.13>3.18 C) Accept p=0 because 61.13<2.78 D) Reject p=0 because 60...

Statistics
a random group of seniors was selected from a university and asked about their plans for the following year. The school advising office claims that 50% of the students plan to work, 25% of the students plan to continue in school, and 25% of the students plan to take some time ...

statistics
A random group of customers at a fast food chain were asked whether they preferred hamburgers, chicken sandwiches, or fish sandwiches. The restaurant's marketing department claims that 40% of the customers prefer hamburgers, 46% of the customers prefer chicken sandwiches, ...

Statistics
Test the significance of the correlation coefficient r at a=0.05 for the data below. X values 59, 65, 73, 80, 89 Y values 97, 102, 110, 117, 125 A) Accept p=0 because 60.81<3.18 B) Reject p=0 because 61.13>3.18 C) Accept p=0 because 61.13<2.78 D) Reject p=0 because 60...

Statistics
The table list the sugar content of two types of apples from three different orchards. At a=0.05, test the claim that the sugar content of the apples and the orchard where they were grown are not related. Sugar Content------Orchard 1----- Orchard 2------Orchard 3 Apple type1:-...

Math
How do I simplify this? :l 4(x+y)]/(5x^2y^3) ÷ (-2x-2y)/10

math
The measure of one angle is 30 degrees less than one-third the measure of its supplement. Find the two angles.

math
The measure of one angle is 15 degrees more than half the measure of its complement. Find the measure of the two angles.

math
The average airspeed of a single-engine aircraft is 150 milesper hour. If the aircraft flew the same distance in two hours with the wind as it flew in 3 hours against the wind, what was the effect of the wind on the plane? What are the equations? What is wind speed?

math
A boat is rowed down a river a distance of 16 miles in 2 hours and it is rowed upstream the same distance in 8 hours. Let r represent the rate of the boat in still water in miles per hour, and let c represent the rate of the stream in miles per hour. Write the equation. What i...

math
The length of a rectangle is 4 times the width. The perimeter is 50cm. Find the length and width. Write the equations. What is the length and width?

math
A rectangle has a length of 4x and a width of 4x-2. Its perimeter is 12 inches. Find the length and width. Write the equations. What is the length and width?

math
Eighty people are separated into 2 groups. The first group is 8 less than 3 times as large as the second. Find the number of people in each group.

algebra 2
The larger of two numbers in 8 times the smaller. The difference between them is 42. Find the numbers. Write the equations. Find the numbers

Chemistry
What compounds can be formed by the reaction of K2SO4 and BaCI2?

Precalculus
1.Solve 5^(2x) -4(5^x)=12 2. Solve Log[8](log[8]x)=0

Math
Verify if this is the correct form please. Given the parent function f(x)=log[10]x, state the equation of the function that results from a vertical stretch by a factor of 2/5, a horizontal stretch by a factor of 3/4, a reflection in the y-axis, a horizontal translation 2 units...

Trig
Solve 5^2x -4(5^x)=12

math
What is 4.20 multiplied by 10^-4 in standard form.

Math
The answer is not 23 or 365.

Math
Use the pattern "1 less than 3 times the number." Start with the number 5. What is the 4th number in the pattern?

physics
a 50 kg person has a weight of 80 N on the surface of the moon what is the acceleration due to gravity

translation
how can say you can use forceps during a science inquiry to pick up a small object place it under the microscope it will appear larger in spanich please

ruler
how can say you can use forceps during a science inquiry to pick up a small object place it under the microscope it will appear larger in spanich please

inglish and spanish
translate spanish to inglish

Math
If sales volume exceeds the break-even point, the firm sill experience a)an operating loss,b)an operating profit c)an increase in plant and equipment d)an increase in stock price

geometry
A cylindrical tin can holding 2 gal.has its height equal to the diameter of its base.Another cylindrical tin can with the same capacity has its height equal to twice the diameter of its base. Find the ratio of the amount of tin required for making the two cans with covers.. He...

math
i need help with square roots?

algebra
what is 5 on the square root of 2m divied by 5 on the square root of 3m cubed

math
3.3191489 rounded 3.32

kindergarten
HAVE CHILD COUNT THE SEA ANIMALS AND THEN DRAW COUNTERS TO SHOW HOW MANY SEA ANIMALS

algebra
factor out the GCF 6x^2-10x

Math
find the prime factorization of 120.

Algebra
We're doing multi-step equations, and I need help on how to check my answers? I knew how to do it on two-step equations, but now it's kind of confusing? for example, there's a problem, 6a-1 over 7 = 1 My answer was 4/3. We're supposed to insert our answer in pl...

algebra 2
y=ln(2x-12)

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