1. statistics

    A simple random sample of a size n is drawn from a population that is normally distributed. The sample mean, x is found to be 110, and the sample standard deviation, s, is found to be 10. A- Construct a 95% confidence interval about u if the sample size,

    asked by Anonymous on March 29, 2015
  2. Physics

    In an (x,y) co-ordinates system with x east and y north, an aircraft has the velocity components Vx = -170 ms-1 and Vy = 110 ms-1, and an acceleration of 6.4 ms-2 at an angle od 42 degree from the x axis. What is the angle of the velocity from the x=axis.

    asked by Stupid Alex on July 4, 2012
  3. probability

    A survey of 850 students conducted in two schools showed the following results: School A: *Students who took the bus = 400 * Students who did not take the bus = 150 Total = 550 School B: *Students who took the bus = 200 * Students who did not take the bus

    asked by Anna on January 5, 2010
  4. Math

    Triangle ABC and RST are similar triangles. A=2(x+15)^0,angle S= 3x^0 and angle C=x^0. What are the correct measures of angle B,R,and T? What kind of angles are they?

    asked by Ebony on September 22, 2010
  5. chs

    Two wires support an electricity pole. if the wires make angles of 58°and 67° with the ground and |AB|=21m, calculate the lengths of the wires

    asked by peter on August 16, 2015
  6. Maths

    Two wires support an electricity pole. if the wires make angles of 58°and 67° with the ground and |AB|=21m, calculate the lengths of the wires

    asked by mishael on September 5, 2017
  7. science

    A vehicle starts from rest and accelerates with a constant acceleration, covering 200m in 5s. it then continues at a constant velocity for 300m before decelerating with a constant 2m/s^2 deceleration to a stop. what is the maximum speed attained, total

    asked by annie on September 10, 2014
  8. Physics

    Draw the figure. You have the following equations that you can write: a) Sum Vertical Forces=0 b) Sum horizontal forces=0. Remember that at the upper part of the ladder, there is a horizontal force (only). c) Sum of moments about any point, I suggest the

    asked by bobpursley on May 31, 2007
  9. Math

    Imagine there is a triangle with two interior angles of 45◦ . If the shortest side of the triangle is 1cm long, what is the area of the triangle?

    asked by Ladoo on April 13, 2011
  10. sciencde

    Vector A has a magnitude of 248 N and direction angles of α = 85°, β = 114°, and γ = 25°. Express Vector A in unit vector notation.

    asked by parminder on January 16, 2018
  11. Math

    The larger angles of a rhombus are twice the smaller angle of the rhombus. If the shorter diagonal is 20, find the perimeter of the rhombus.

    asked by Xinyi panggg on December 13, 2013
  12. Trignometry

    The angles in triangle ABC satisfy 6sin∠A=3√(3)sin∠B=2√(2)sin∠C. If sin^2∠A=a/b, where a and b are coprime positive integers, what is the value of a+b?

    asked by Stranger on March 18, 2013
  13. Math

    The second angle of a triangle is 4 times as large as the first. The third angle is 130° more than the sum of the other two angles. Find the measure of the second angle.

    asked by Jamie on May 30, 2018
  14. Math

    the larger angles of a rhombus are twice the smaller angle of the rhombus. if the shorter diagonal is 20, find the perimeter of the rhombus

    asked by Simon on December 11, 2013
  15. pre-cal

    Three forces with magnitudxes 100, 50 and 80 lbs act on an object at angles of 50 degree, 160 degree and -20 degree respectively.

    asked by sarah on January 9, 2013
  16. GEOMETRY ONE QUESTION PLEASE HELP?!!

    Name the smallest angle of triangle ABC, segment AC is 9, segment CB is 10, and segment AB is 8.

    asked by Lily on January 2, 2012
  17. Geometry

    Question: If a ray divides an angle into two supplementary angles, then the original angle is a straight angle. True?

    asked by Robert on August 21, 2015
  18. math

    Two angles of the triangle have given measures. Find the measure of the third angle x degrees, 120 degrees minus x degrees

    asked by x on April 13, 2011
  19. trig

    ABC- with angles AB, and C and sides AB,BC, and AC, angle B is right 90degree angle, if sin of angle A is 0.5, side BC 8in., what is length of AC

    asked by maranade on February 12, 2013
  20. Geometry

    The sum of the interior angles of polygon is 1800. Find the number of sides in the polygon and, what do you call that polygon?

    asked by Anal-G on January 20, 2011
  21. geometry

    find the remaining sides and angles for the triangle ABC, if b=48 m

    asked by Taylor Rambo on June 4, 2010
  22. geometry

    quadrilateral ABCD has right angles at B and D. If ABCD is kite-shaped with AB=AD=20 and BC=CD=15, find the radius of the circle inscribed in ABCD.

    asked by Hanna on December 4, 2011
  23. Science

    Would cold-water fish species be easier to catch along the northwest coast of South America during El Nino or normal periods? and why???

    asked by Angie on January 19, 2009
  24. medical billing and coding

    discuss coding for obstetrics, including items covered by the golbal fee for anterpartum and postpartum periods of normal pregnancy

    asked by angela on July 13, 2009
  25. Medical Coding and Billing

    Discuss coding for obstetrics, including items covered by the global fee for antepartum and postpartum periods of normal pregnancy.

    asked by Jessica on December 9, 2009
  26. statistics

    consider the following sample statistics from a population that is aproximatly normal. n=15, s= 7.92,level of confidence is 99 % Calculate the margin of error( round to the nearest hunderth)

    asked by Angela on March 11, 2009
  27. college pre statistics

    consider the following sample statistics from a population that is aproximatly normal. n=15, s= 7.92,level of confidence is 99 % Calculate the margin of error( round to the nearest hunderth)

    asked by Angela on March 11, 2009
  28. statistics

    consider the following sample statistics from a population that is aproximatly normal. n=15, s= 7.92,level of confidence is 99 % Calculate the margin of error( round to the nearest hunderth)

    asked by Angela on March 11, 2009
  29. PHYSICS ---HELP!

    A man doing push-ups pauses. His mass is 80-kg. Determine the normal force exerted by the floor on each hand and on each foot. a = 40 cm b = 95 cm c = 30 cm W = mg = 784 N

    asked by robin on November 2, 2010
  30. PHYSICS ---HELP!

    A man doing push-ups pauses. His mass is 80-kg. Determine the normal force exerted by the floor on each hand and on each foot. a = 40 cm b = 95 cm c = 30 cm W = mg = 784 N

    asked by robin on November 2, 2010
  31. science

    Compare how your weight, mass, and the normal force exerted by the floor change when you are in an elevator that starts from rest and accelerates upward.

    asked by Liea on September 26, 2015
  32. Anatomy & Physiology

    In the fetus, the organ that is important for the normal development of the immune system is the? liver? spleen? thymus gland? lymph node?

    asked by Nancy on November 3, 2009
  33. stats

    find critical z values, in each case assume normal distribution applies. left tailed test. Alpha= 0.05 Can someone please explain how to do this?

    asked by josh on December 2, 2017
  34. Stats

    The high temperature X (in degrees Fahrenheit) on January days in Columbus, Ohio varies according to the Normal distribution with mean 21 and standard deviation 10. The value of P(X < 10) is

    asked by Tracy on March 29, 2014
  35. Physical Education

    The ability of your heart and lungs to work effectively when you exercise and to return to normal when you stop is what? Cardiovascular recovery. I hope this helps. Thanks for asking.

    asked by Ruth on November 29, 2006
  36. medical billing and coding

    Discuss coding for obstetrics, including items covered by the global fee for antepartum and postpartum periods of normal pregnancy.

    asked by ann on April 7, 2009
  37. Medical billing and coding

    Discuss coding for obstetrics, including items covered by the global fee for antepartum and postpartum periods of normal pregnancy.

    asked by Len on August 5, 2010
  38. troy Academy

    based on the results of the studies, what should an elementary school teacher do to ensure that a child with an unusual name develops normal intellectual ability

    asked by lee on May 8, 2014
  39. medical coding and billing

    discuss coding or obstetrics, including items covered by the global fee for antepartum and pospartum periods of normal pregnancy

    asked by Marty on September 23, 2010
  40. statistics

    The heights of young women are approximately normal with a mean 64.5 in and a standard deviation of 2.5 in. What is the probability that a woman chosen at random is taller than 63.6 inches?

    asked by Lynn on August 15, 2012
  41. Physics

    STATE whether you expect the following entities to be in thermal equilibrium with their surroundings under normal circumstances. A. A desk - I think yes B. A person- I think yes C. The walls of a room- I think yes D. The sun- I think no

    asked by Veronica on August 22, 2017
  42. Probability

    Assume Z has a standard normal distribution. Use Appendix Table III to determine the value for z that solves each of the following: (Round your answer to 2 decimal places.) P(Z

    asked by ash on March 21, 2014
  43. social studies

    What individual behaviors might be influenced by television? A) Suicide- I am not as attractive as those on TV. B) Drug use - I am not happy as those on TV. C) Promiscuous Sexual Activity - it seems to be normal behavior on TV. D) All of the above.

    asked by toti on September 20, 2015
  44. normal population

    The heights of 8 fourth graders are listed in inches: {50, 51, 55, 52, 59, 54, 54, 53}. Find the mean, median, mode, variance, and range. Also, do you think this sample might have come from a normal population? Why or why not?

    asked by Anonymous on December 17, 2009
  45. biology

    f you mate a hairy ear rimmed female with a normal male what are the expected offspring genotypes and phenotypes and thier ratios

    asked by Anonymous on April 17, 2009
  46. Health

    Discuss coding for obstetrics,including items covered by the global fee for antepartum and postpartum periods of normal pregnancy.

    asked by Michelle on October 6, 2009
  47. statistics

    A standardized test has a mean of 88 and a standard deviation of 12. What is the score at the 90th percentile? Assume a normal distribution. how would I solve? a. 90.00 b. 112.00 c. 103.36 d. 91.00

    asked by Nicole on September 16, 2014
  48. Statistics

    The high temperature X (in degrees Fahrenheit) on January days in Columbus, Ohio varies according to the Normal distribution with mean 21 and standard deviation 10. the value of P(X

    asked by Anonymous on March 13, 2010
  49. statistics

    Assume the IQ's of men and women can be described by a Normal model with a mean of 100 and a standard deviation of 15. For the first part: What percent of people do you expect to have IQ's over 120?

    asked by alexandra on February 8, 2011
  50. Statistics

    The high temperature X (in degrees Fahrenheit) on January days in Columbus, Ohio varies according to the Normal distribution with mean 21 and standard deviation 10. the value of P(X

    asked by Anonymous on March 13, 2010
  51. college

    Discuss Coding For Obstetrics, Including Items Covered By The Global Fee For Antepartum And Postpartum Periods Of Normal Pregnancy?

    asked by Anonymous on August 30, 2009
  52. Science

    At why type of plate boundary are normal faults found? http://jersey.uoregon.edu/~mstrick/AskGeoMan/geoQuerry19.html

    asked by Liz on April 2, 2007
  53. Science

    Homeostasis returns your febrile state of 103o F to normal room temperature. Do you agree or disagree with this statement and explain your answer.

    asked by ISSY on June 10, 2013
  54. algebra

    The product of the page numbers on two facing pages of a book is 110. Find the page numbers. the page numbers are:

    asked by rr on May 18, 2012
  55. physicssssss

    In a cargo plane, the center of gravity must be between the front and rear landing gears in order to maintain a torque equilibrium. The front landing gears help counteract the torque provided by the rear landing gears in this case. A jet transport has a

    asked by hy on March 1, 2011
  56. physics

    In a cargo plane, the center of gravity must be between the front and rear landing gears in order to maintain a torque equilibrium. The front landing gears help counteract the torque provided by the rear landing gears in this case. A jet transport has a

    asked by Joseph on October 20, 2014
  57. statistics; emergency please help me

    Assume a binomial probability distribution has p = .60 and n = 200. c. What is the probability of 100 to 110 successes (to 4 decimals)? d.What is the probability of 130 or more successes (to 4 decimals)?

    asked by Vanessa on April 9, 2014
  58. Math(Connexus 6th)Unit 7

    Saturday, Nola bowled 3 games in her bowling league. She had a mean score of 115. The score of her first game was 110. The score of her second game was 90. What was the score of her third game?

    asked by I need Help Fast and Please on December 8, 2017
  59. statistics; emergency please help me

    Assume a binomial probability distribution has p = .60 and n = 200. a. What is the probability of 100 to 110 successes (to 4 decimals)? b. What is the probability of 130 or more successes (to 4 decimals)?

    asked by Vanessa on April 11, 2014
  60. statistics

    Assume a binomial probability distribution has p = .60 and n = 200. c. What is the probability of 100 to 110 successes (to 4 decimals)? d. What is the probability of 130 or more successes (to 4 decimals)?

    asked by Vanessa on April 7, 2014
  61. statistics

    Assume a binomial probability distribution has p = .60 and n = 200. c. What is the probability of 100 to 110 successes (to 4 decimals)? d. What is the probability of 130 or more successes (to 4 decimals)?

    asked by vanessa on April 7, 2014
  62. Physics

    We have a heat engine that produces 150 J of heat, does 40 J of work, and emits 110 J into another system. What is the efficiency of the heat engine? (show you work)

    asked by Mark on December 7, 2016
  63. statistics

    company A has 110 employed, company B has 750 employed and company C has 250 employed. Compute the probability that an employee selected at random comes from company A or B.

    asked by iris on June 7, 2014
  64. physics

    Four copper wires of equal length are connected in series. Their cross-sectional areas are 0.96 cm^2, 2.02 cm^2, 2.90 cm^2, and 5.06 cm^2. A potential difference of 116 V is applied across the combination. Determine the voltage across the 2.02 cm^2 wire.

    asked by vivian on May 25, 2016
  65. physics

    Four copper wires of equal length are connected in series. Their cross-sectional areas are 0.96 cm^2, 2.02 cm^2, 2.90 cm^2, and 5.06 cm^2. A potential difference of 116 V is applied across the combination. Determine the voltage across the 2.02 cm^2 wire.

    asked by My question wasn't answered.... on May 26, 2016
  66. xacc 280

    I just need an example • What increases the Asset account, a debit or a credit? • What decreases the Asset account, a debit or a credit? • What is the normal balance of the Asset account, a debit or a credit? Account Changes Account Categories What

    asked by stacy on July 10, 2010
  67. Vector resultant angles

    F1 has a magnitude of 9N acting due west, and F2 has a magnitude of 12 N. I know the magnitude is 15 but I don't know the angle and how to calculate it. I need a lot of help for calculating resultant angles.

    asked by Bob on October 22, 2015
  68. math

    2 trees are 80 m apart . from a point halfway between the trees, angles of elevvation of the tops of the trees are measured. what is the height of each tree to the nearest metre

    asked by anu on November 16, 2010
  69. cosines

    I don't know how to reverse cosine decimals into angles. Can you please explain and help me solve these . cos A= 0.28571428571 A= cos B= 0.66666666667 B= cos C= 0.5238089523

    asked by Anon on February 27, 2011
  70. maths

    write each of the following as trigonometric ratios of acute angles. (a)sin160 degrees (b)cos 310 degrees (c)tan 200 degrees

    asked by chrystabelle on October 26, 2011
  71. Calculus

    Let OP be any vector with direction angles theta, beta, and gama. Explain why cos^2theta + cos^2beta + cos^2gama = 1

    asked by Ria on May 17, 2010
  72. physics

    A shot-putter throws the shot with an initial speed of 4.0 m/s from a height of 4.7 ft above the ground. Calculate the range of the shot for each of the following launch angles.

    asked by Anonymous on October 21, 2011
  73. Vector resultant angles help

    F1 has a magnitude of 9N acting due west, and F2 has a magnitude of 12 N. I know the magnitude is 15 but I don't know the angle and how to calculate it. I need a lot of help for calculating resultant angles.

    asked by Bobby Funtimes on October 22, 2015
  74. Math

    Mr. Doodle’s grade distribution over the past 3 years for a course in college algebra is shown in the chart below. Grade Number A 45 B 180 C 110 D 95 F 65 I 5 If Jane plans to take a college algebra course with Mr. Doodle, determine the empirical

    asked by Jen on July 19, 2011
  75. Chemistry

    Calculate the planar packing fraction (fractional area occupied by atoms) of the (110) plane of aluminum at 300K 0.554 atm/cm Calculate the linear packing density (atoms/m) in the [100] direction of Al at 300K. 2.47⋅10^9 m

    asked by Samboni on December 23, 2014
  76. ATTENTION TEACHERS AND STUDENTS

    Mrs. Matthew called me stupid for not knowing the answer to this so...May I please get some proper help? The cost for a business to make greeting cards can be divided into one-time costs (e.g. a printing machine) and repeated costs (e.g. ink and paper).

    asked by Dylan on April 8, 2016
  77. algebra

    Bob had three 10' lengths of conduit. If he used a total of 13.75' of conduit to install a motor, how much total conduit does he have left?

    asked by tim on June 29, 2012
  78. Help in Chemistry!!

    You are given an aqueous solution of hydrofluoric acid. (Recall that hydrofluoric acid is a weak acid; When you are given an aqueous solution of a weak acid you always assume that the dissociation reaction of the acid in water has reached equilibrium)

    asked by Mary on November 26, 2011
  79. physics

    One block rests upon a horizontal surface. A second identical block rests upon the first one. The coefficient of static friction between the blocks is the same as the coefficient of static friction between the lower block and the horizontal surface. A

    asked by Kyle on January 8, 2017
  80. poetry

    is this a good poem about the hunger games ? 24 tributes from 12 districts 2 kids from each forced to fight to death Only one comes out alive With 23 others dead 24 tributes in total 12 districts in all As punishment for the rebellion Against district 13

    asked by anoymous on April 4, 2014
  81. managerial eccon

    Suppose that a firm is currently employing 30 workers, the only variable input, at a wage rate of $60. The average product of labor is 30, the last worker added 12 units to total output, and total fixed cost is: $3,600. what is the averge variable cost?

    asked by stacey on October 3, 2010
  82. algrbra

    1. David recently had a garage sale and has amassed a pile of change. How many of each coin (penny, nickel, dime, quarters) does he have if: a.There is at least 5 pennies, 5 nickels, 5 dimes and 5 quarters b.There is only a prime number of each coin c.The

    asked by hello2248 on March 22, 2016
  83. Physics

    A torque of 32Nm is applied to a wheel, which causes it to accelerate at 25 rad/s2. What is the rotational moment of inertia of the wheel? I got 1.28kg/m^2. Is this correct?

    asked by Yoyo on August 10, 2015
  84. physics

    A 10^4 kg train moving at 20m/s stops in a distance of 500m. Calculate the force applied by the train's braking system.

    asked by Swastika on March 15, 2014
  85. Calculus

    A rusted bolt requires 30 J of torque to be loosened. If only 40 N of force is applied to a wrench with which it makes a 90° angle, how long is wrench?

    asked by Jake on April 3, 2012
  86. physics

    A 7.6 kg chair is pushed across a frictionless floor with a force of 42 N that is applied at an angle of 22° downward from the horizontal. What is the magnitude of the acceleration of the chair?

    asked by aly on December 3, 2010
  87. visual art

    Interested in the basic aspects of drawing and painting.Charateristics of different types of paints. Pros and Cons of the paints. How they are applied.

    asked by Dana on April 6, 2008
  88. physics

    A car of mass 600 kg is travelling at 10m/s. when brakes are applied, it comes to rest in 10 M. what is the average force exerted by the brakes?

    asked by Farah on March 1, 2010
  89. physics - uniform circular motion

    Explain why the kinematics equations which describe the motion of the object that has constant acceleration cannot be applied to uniform circular motion.

    asked by Shaila on August 23, 2010
  90. physics

    20 kg , 30 cm diameter disk is spinning at 300 rpm. How much friction force must be applied to rim to bring the disk to a halt in 3.0s?

    asked by Justin on December 15, 2010
  91. Phys

    A 120-V rms voltage at 2000 Hz is applied to a 6.0-mH inductor, a 2.0-ìF capacitor and a 200-Ù resistor. What is the rms value of the current in this circuit?

    asked by Rusty on April 12, 2011
  92. Physics

    A 100 N force is applied to a 50.0 kg crate resting on a level florr. The coeeficient of kinetic friction is 0.15. a. What is the acceleration of the crate?

    asked by jdajaljk on January 28, 2011
  93. physics

    A sinusoidal voltage Δv = (65 V) sin (140t) is applied to a series RLC circuit with L = 100 mH, C = 175 μF, and R = 42 Ω. (a) What is the impedance of the circuit?

    asked by Anonymous on March 11, 2013
  94. physics

    A spiral spring extends from length 10.01m to 10.00cm when a force of 20N is applied on it. Calculate the constant force

    asked by lola on September 19, 2017
  95. Statistics

    A test for independence is applied to a contingency table with 3 rows and 5 columns for two nominal variables. The degrees of freedom for this test will be

    asked by Joe on May 12, 2009
  96. physics

    A torque of 0.97 N-m is applied to a bicycle wheel of radius 0.35 m and mass 0.75 kg. Treating the wheel as a hoop, find its angular acceleration.

    asked by pakilina on November 25, 2011
  97. Calculus

    The divergence test applied to the series ∑n=1 to ∞ 3n/(8n+9) tells us that the series converges or diverges? I got that it was divergent because it was undefined at infinity, is my answer right?

    asked by Regina on April 28, 2017
  98. Physics

    A 2.9 kg brick has a kinetic coefficient of friction of 0.33. what force must be applied to the brick for it to move at a constant velocity? Show work

    asked by hamza on October 17, 2015
  99. physis

    A lorry is travelling at 60 km/hr when the brakes are applied. Assuming that the deceleration is uniformly at 2m/hr, how far has the lorry travelled when its speed is 36km/hr after 6seconds.

    asked by Blessing on November 21, 2015
  100. maths

    a crate is hauled 8m up a ramp under a constant force of 200N applied at angle of 25 degree the ramp. Find work done?

    asked by yigerem demise on December 17, 2013