# amy

Popular questions and responses by amy
1. ## Statistics

The weights of the fish in a certain lake are normally distributed with a mean of 15lbs. and standard deviation of 6lbs. If a sample of 5 fish are taken from the lake, find the probability their means weights are between 12.6 lbs. and 18.6 lbs.

2. ## statistics

A survey for brand recognition is done and it is determined that 68% of consumers have heard of Dull Computer Company. If a survey of 800 randomly selected consumers is to be held would it be unusual for 554 of them to recognize Dull Computer Company?

3. ## Geometry

Points $A$ and $B$ are on a circle centered at $O$, and point $P$ is outside the circle such that $\overline{PA}$ and $\overline{PB}$ are tangent to the circle. If $\angle OPA = 32^{\circ}$, then what is the measure of minor arc $AB$, in degrees?

4. ## Sat Math

The bottom of a ski slope is 6,500 feet above sea level, the top of the slope is 11,000 feet above sea level, and the slope drops 5 feet vertically for every 12 feet traveled in the horizontal direction. From the top of the slope, Kayla skis at an average

5. ## Sat Math

0.2B + 0.1S = C Rhia is using the above equation to investigate the carbon footprint, C, in kilograms of carbon dioxide (CO2) emissions, for her morning commute which S miles are by subway and B miles are by bus. How many kilograms of (CO2) per mile does

6. ## Probability/Statistics

A quiz consists of 10 multiple-choice questions, each with 4 possible answers. For someone who makes random guesses for all of the answers, find the probability of passing if the minimum passing grade is 70 %. I'm not sure what to do. I figured that

7. ## Kinetics Problem II

The data below were collected for the following reaction: 2NO2 (g) + F2 (g) ->2NO2F(g) A: Calculate the value of the rate constant, k. B: What is the overall order of the reaction?

8. ## Geometry

Which one of these is NOT a step used when constructing an inscribed square using technology? A. Create a circle using the center with given points tool. B. Connect the points with a line through the center of the circle. C. Mark the points of intersection

23. ## math

The first term of an A.P is equal one-half of the common difference,d, find the 8th term of the A.P in the tern of 'd'

24. ## production and operations management

5. All of the following statements about ABC analysis are true except: A. Inventory may be categorized by measures other than dollar volume B. It categorizes on-hand inventory into 3 groups based on dollar volume C. It is an application of the Pareto

25. ## Sat Math

Gary learned that the value of his car depreciates by 15% per year. Which of the following functions best describes the value of his car the year after the car is worth m dollars? A. f(m) = 0.15m B. f(m) = 0.85m C. f(m) = 1 - 0.15m D. f(m) = 1 - 0.85m

26. ## math

Find the circumference of the circle. Round your answer to the nearest hundredth. Use 3.14 or 227 for π. the radius is 3 ft

27. ## Chemistry

which is the stronger acid, HIO4 or HBrO4?

28. ## Sat math

Brian and Richard stand back-t0-back. Each boy takes 5 equally spaced steps, in opposite directions from the starting location. At this point, Richard walks to where Brian is in 9 steps. How many times bigger are Richard's steps than Brian's steps? A. 4/5

29. ## Math

The sides of the rectangle are in the ratio of 4:7. If its length is 31.5 in., find the width, the perimeter, and the area of this rectangle.

30. ## Maths

In a box of chocolates, •one-fifth are plain chocolate •one-sixth are white chocolate •the other 38 are milk chocolate. How many chocolates are there in the box?

31. ## Statistics

The following data set is the GPAs of the students in a statistics class. 1.93, 1.99, 2.00, 2.04, 2.12, 2.34, 2.55, 2.55, 2.75, 2.75, 2.80, 2.80, 2.85, 3.02, 3.12, 3.22, 3.31, 3.33, 3.45, 3.69 What percentile is a GPA of 2.34? A. About the 6th B. About the

32. ## Bus. Math

a. Graduated payments result in the borrower paying A. more at the beginning of the mortgage. B. less at the beginning of the mortgage. C. the mortgage at 1¨M2 the standard rate. D. less at the end of the mortgage. Answer: B 2. When are annuity due

33. ## Technical wrtiting

Internet Source Distortion/Misrepresentation From media,or the Internet, identify an example of each of the following sources of distortion (faulty causal and/or statistical inference) a. A study with questionable sponsorship or motives b. Reliance on

Find the standard deviation for the given data. Round your answer to one more decimal place than the original data. 22, 29, 21, 24, 27, 28, 25, 36 A. 4.8 B. 4.2 C. 2.8 D. 1.6

35. ## physics

A 65 kg skier speeds down a trail, as shown in Figure 5-24. The surface is smooth and inclined at an angle of θ = 20° with the horizontal. (a) Draw a free-body diagram for the skier. (Do this on paper. Your instructor may ask you to turn in this

36. ## Spanish

Fill in the blanks with questions based on the cues. Remember to use correct capitalization and punctuation. can someone please check my homework 1. ¿? / no / estudiar / tú / en la biblioteca / hoy / por qué A. ¿ Por qué tú no estudiar hoy en la

37. ## statistics

1997, a survey of 940 house holds showed that 15 of them use e-mail. Use those sample results to test the claim that more than 15 % of households use email. use a 0.05 significance level. which of the following is the hypothesis test to be conducted a. h0

38. ## Physics

A dart is thrown at a dartboard 2.37 m away. When the dart is released at the same height as the center of the dartboard, it hits the center 0.447 sec. At what angel relative to the floor was the dart thrown.

39. ## Chemistry

For the following balanced equation: 2 Ag+ (aq) + Cu(s) ---> Cu2+ (aq) + 2 Ag(s) Which letter corresponds to the correct cell notation at standard state conditions? A. Cu2+(aq)/ Cu(s) // Ag(s) / Ag+(aq) B. 2Ag+(aq)/ Cu2+(aq)// 2Ag(s)/ Cu(s) C. Ag+(aq) /

40. ## math

A fruit seller sold 234 apples.He sold twice as many apples as mangoes.how many more apples did he sell?

41. ## Stats

In the past, the mean running time for a certain type of flashlight battery has been 9.8 hours. The manufacturer has introduced a change in the production method and wants to perform a hypothesis test to determine whether the mean running time has

42. ## Calculus-rates

1.) A man 6 ft tall walks at a rate of 5 ft per sec. from a light that is 15 ft above the ground. At what rate is the top of his shadow changing? 2.) An airplane flies at an altitude of 5 miles toward a point directly over an observer. The speed of the

43. ## educatial technology

which of the following statements is true of a time management plan? a. it is a work in progress that will need to be altered many times b. the plan you create is the one you should stick with c. you dont need to schedule breaks or free time d. it isnt

44. ## Math

Find the standard deviation for the given data. Round your answer to one more decimal place than the original data. 15, 42, 53, 7, 9, 12, 14, 28, 47 A. 29.1 B. 16.6 C. 17.8 D. 15.8 is it C

45. ## Physics

A lighthouse beacon alerts ships to the danger of a rocky coastline. Part A According to the lighthouse keeper, with what speed does the light leave the lighthouse? v/c= A boat is approaching the coastline at speed 0.5. According to the captain, with what

46. ## Chemistry

What is the molarity of a solution containing 9.0 moles of solute in 2500 mL of solution? I got this answer: M = (9.0mols/2.5L)= 3.6M Is this correct? Thanks

47. ## Physics

A 23 kg suitcase is being pulled with a constant speed by a handle that is at an angle of 25° above the horizontal. If the normal force exerted on the suitcase is 155 N, what is the force F applied to the handle?

48. ## Probability/Statistics

Using diaries for many weeks, a study on the lifestyles of visually impaired students was conducted. The students kept track of many lifestyle variables including how many hours of sleep obtained on a typical day. Researchers found that visually impaired

49. ## word unscramble

need help unscrambling a word or words tarluna what is it HELP ME UNSCRAMBLE THESE LETTERS TO MAKE A WORD THAT PERTAINS TO SPACE AND IS A P POSSESSIVE NOUN. SEGHRTMLAN J'aodredefis Please post the word or words you need to unscramble, and we'll try to help

50. ## Math

A parking lot contains motorcycles (2 wheels) and cars (4 wheels). There are 35 vehicles and 114 wheels. How many motorcycles and cars are ￼￼there?

51. ## LAW

1. For defense counsel to be considered ineffective, the defense attorney must: A. perform adequately. B. prejudice the defendant. C. be a public defender. D. only be unreasonable under prevailing professional norms. im confused between B and D 2. Which of

52. ## Calculus

Use a linear approximation (or differentials) to estimate the given number. (32.06)^4/5

53. ## physics

Children slide down a frictionless water slide that ends at a height of 1.80 m above the pool. If a child starts from rest at point A and lands in the water at point B, a horizontal distance L = 2.46 m from the base of the slide, determine the height h of

54. ## Math

Javier rides his bicycle at a rate of 15 miles per hour. How many feet are in 15 miles?

55. ## History

Which of the following describes the main reason the Spanish conquistadors needed Native American slaves? A. They needed help to find gold and send it back to Spain. B. The Native American slaves aided them with their tobacco crops. C. The Spanish wanted

56. ## Statistics

1. A poll of 700 persons attending the Taste of Chicago showed that 455 persons, 65% of the sample, believed that the food was overpriced. It is estimated that 1,250,000 persons attend the Taste. Statistics suggest that, although 65% plus or minus 5% of

57. ## Law

When an appellate court reverses a lower court’s decision, it: A. sends the case back to the trial level for further action consistent with the appellate decision. B. nullifies or sets aside a trial verdict. C. sets the defendant free. D. None of the

58. ## Calculating Rate Constants

I'm really stuck with this one. Here's the rate law and the data that is needed. I appreciate any help Rate= k[I2]X{[H+]Y[CH3COCH3]Z Column 1 - Trial Column 2 - Volume of 0.0010 M I2 Column 3 - Volume of 0.050 M HCl Column 4 - Volume of 1.0 M acetone

59. ## Gas Law Chemistry

I need help on these two questions: If a certain gas occupies a volume of 16L when the applied pressure is 8.0atm , find the pressure when the gas occupies a volume of 4.0L . A certain gas is present in a 12.0L cylinder at 4.0atm pressure. If the pressure

60. ## physics

A science student is riding on a flatcar of a train traveling along a straight horizontal track at a constant speed of 18.0 m/s. The student throws a ball along a path that she judges to make an initial angle of 68.0° with the horizontal and to be in line

61. ## Physics

A sphere of mass 3.0X10^-4 kg is suspended from a cord. A steady horizontal breeze pushes the sphere so that the cord makes a constant angle of 37 degrees with the vertical. find a) the magnitude of that push and b) the tension of the cord. I looked

62. ## Sat Math

If y = m^4 = n^3 and y is greater than 1, the mn =? A. y^1/12 B. y^1/7 C. y^7/12 D. y^7

92. ## math

Consider the differential equation dy/dx = -1 + (y^2/ x). Let y = g(x) be the particular solution to the differential equation dy/ dx = -1 + (y^2/ x) with initial condition g(4) = 2. Does g have a relative minimum, a relative maximum, or neither at ?

93. ## Pre Calculus

Find the number of units that produces maximum revenue given by R = 900x-0.1x^2, where R is the total revenue in dollars and x is the number of units sold.

94. ## Statistics

A nutritionist wants to conduct a study to validate the efficacy of an herb as an aid in weight loss. She randomly assigns half of a group of overweight persons to a treatment group who are given the herb with instructions for its use and a planned diet

95. ## Chemistry

What volume of Cl2 gas, measured at 687torr and 34∘C, is required to form 27g of NaCl?

96. ## math

A rectangle is 7 feet longer than it is wide. If its area is 120 square feet, find its length and width. Represent this situation as an equation and solve.

97. ## LAW

1. A “bright-line” decision may be helpful because: A. it is subject to very little interpretation. B. it promotes clarity and predictability. C. it promotes consistency. D. All of the above. is it D

98. ## physics

The units of heat are equivalent to those of which one of the following quantities?