• Statistics problem help?

    A certain chromosome defect occurs in only 1 in 190 adult Caucasian males. A random sample of n = 100 adult Caucasian males is to be obtained. (a) What is the mean value of the sample proportion p̂, and what is the standard deviation of the sample proportion? (Enter your mean as an exact integer, fraction, or decimal. Round your standard deviation... show more
    A certain chromosome defect occurs in only 1 in 190 adult Caucasian males. A random sample of n = 100 adult Caucasian males is to be obtained. (a) What is the mean value of the sample proportion p̂, and what is the standard deviation of the sample proportion? (Enter your mean as an exact integer, fraction, or decimal. Round your standard deviation to five decimal places.) mean: ________ standard deviation: ________
    2 answers · Mathematics · 7 months ago
  • Help solve? so confused!?

    Suppose our Sun eventually collapses into a white dwarf, in the process losing about three fourths of its mass and winding up with a radius 3.0 percent of its existing radius. What would its new rotation rate be? (Take the Sun's current period to be about 30 days.) ___rad/s What would be its final KE in terms of its initial KE of today?... show more
    Suppose our Sun eventually collapses into a white dwarf, in the process losing about three fourths of its mass and winding up with a radius 3.0 percent of its existing radius. What would its new rotation rate be? (Take the Sun's current period to be about 30 days.) ___rad/s What would be its final KE in terms of its initial KE of today? (KEfinal / KEinitial) = ______
    1 answer · Physics · 7 months ago
  • I don't understand how to get the answer?

    A sample consisting of four pieces of luggage was selected from among those checked at an airline counter, yielding the following data on x = weight (in pounds). x1 = 33.1, x2 = 27.2, x3 = 36.1, x4 = 30.4 Suppose that one more piece is selected and denote its weight by x5. Find all possible values of x5 , such that x = sample median. (Enter... show more
    A sample consisting of four pieces of luggage was selected from among those checked at an airline counter, yielding the following data on x = weight (in pounds). x1 = 33.1, x2 = 27.2, x3 = 36.1, x4 = 30.4 Suppose that one more piece is selected and denote its weight by x5. Find all possible values of x5 , such that x = sample median. (Enter your answers as a comma-separated list.)
    5 answers · Mathematics · 7 months ago
  • How to find the second car's speed? I have the first car.?

    One car has two and a half times the mass of a second car, but only half as much kinetic energy. When both cars increase their speed by 8.5 m/s, they then have the same kinetic energy. What were the original speeds of the two cars? first car: 7.62 m/s <--- correct answer second car : ___m/s
    One car has two and a half times the mass of a second car, but only half as much kinetic energy. When both cars increase their speed by 8.5 m/s, they then have the same kinetic energy. What were the original speeds of the two cars? first car: 7.62 m/s <--- correct answer second car : ___m/s
    2 answers · Physics · 8 months ago
  • Help solve?

    Suppose the roller coaster in the figure below (h1 = 39 m, h2 = 12 m, h3 = 30) passes point 1 with a speed of 1.90 m/s. If the average force of friction is equal to one third of its weight, with what speed will it reach point 2? The distance traveled is 55.0 m.
    Suppose the roller coaster in the figure below (h1 = 39 m, h2 = 12 m, h3 = 30) passes point 1 with a speed of 1.90 m/s. If the average force of friction is equal to one third of its weight, with what speed will it reach point 2? The distance traveled is 55.0 m.
    2 answers · Physics · 8 months ago
  • How to solve for variation and standard deviation?

    The following data are costs (in cents) per ounce for nine different brands of sliced Swiss cheese. 28 62 38 42 70 84 46 53 49 (a) Compute the variance for this data set. (Round your answer to three decimal places.) Compute the standard deviation for this data set. (Round your answer to three decimal places.)
    The following data are costs (in cents) per ounce for nine different brands of sliced Swiss cheese. 28 62 38 42 70 84 46 53 49 (a) Compute the variance for this data set. (Round your answer to three decimal places.) Compute the standard deviation for this data set. (Round your answer to three decimal places.)
    2 answers · Mathematics · 8 months ago
  • What order would this be in?

    2 answers · Chemistry · 8 months ago
  • Soo lost.. help?

    At what rate must the cylindrical spaceship of the figure below rotate if occupants are to experience simulated gravity of 0.80g? Assume the spaceship's diameter is 30 m, and give your answer as the time needed for one revolution.
    At what rate must the cylindrical spaceship of the figure below rotate if occupants are to experience simulated gravity of 0.80g? Assume the spaceship's diameter is 30 m, and give your answer as the time needed for one revolution.
    3 answers · Physics · 8 months ago
  • Help solve this?

    How large must the coefficient of static friction be between the tires and the road if a car is to round a level curve of radius 86 m at a speed of 88 km/h?
    How large must the coefficient of static friction be between the tires and the road if a car is to round a level curve of radius 86 m at a speed of 88 km/h?
    2 answers · Physics · 8 months ago
  • Help solve this???

    (a) Given the vectors A and B shown in the figure above (A = 56.0 and θ = 57.0°), determine B - A. Magnitude _____ Direction ____ ° (counterclockwise from the +x axis is positive) (b) Determine A - B without using your answer in (a). Magnitude Direction _____ ° (counterclockwise from the +x axis is positive) (Compare your results... show more
    (a) Given the vectors A and B shown in the figure above (A = 56.0 and θ = 57.0°), determine B - A. Magnitude _____ Direction ____ ° (counterclockwise from the +x axis is positive) (b) Determine A - B without using your answer in (a). Magnitude Direction _____ ° (counterclockwise from the +x axis is positive) (Compare your results and see if they are opposite.)
    1 answer · Physics · 8 months ago
  • A person driving her car at 54 km/h approaches an intersection just as the traffic light turns yellow.?

    She knows that the yellow light lasts only 2.0 s before turning to red, and she is 30 m away from the near side of the intersection. The intersection is 15 m wide. Her car's maximum deceleration is -5.0 m/s2, whereas it can accelerate from 54 km/h to 70 km/h in 4.8 s. Ignore the length of her car and her reaction time. If she hits the brakes,... show more
    She knows that the yellow light lasts only 2.0 s before turning to red, and she is 30 m away from the near side of the intersection. The intersection is 15 m wide. Her car's maximum deceleration is -5.0 m/s2, whereas it can accelerate from 54 km/h to 70 km/h in 4.8 s. Ignore the length of her car and her reaction time. If she hits the brakes, how far will she travel before stopping? _____ m If she hits the gas instead, how far will she travel before the light turns red? _______m
    2 answers · Physics · 8 months ago
  • Help solve these?

    How many micrometers are in 5.28 × 10–5 meters? How many nanoliters are in 3.96 × 10–10 liters? How many kilovolts are in 6.19 × 105 volts?
    How many micrometers are in 5.28 × 10–5 meters? How many nanoliters are in 3.96 × 10–10 liters? How many kilovolts are in 6.19 × 105 volts?
    6 answers · Mathematics · 8 months ago
  • A horse canters away from its trainer in a straight line, moving 130 m away in 20.0 s.?

    It then turns abruptly and gallops halfway back in 5.3 s. (a) Calculate its average speed. _____ m/s (b) Calculate its average velocity for the entire trip, using "away from the trainer" as the positive direction. _____ m/s
    It then turns abruptly and gallops halfway back in 5.3 s. (a) Calculate its average speed. _____ m/s (b) Calculate its average velocity for the entire trip, using "away from the trainer" as the positive direction. _____ m/s
    1 answer · Physics · 9 months ago
  • Convert 6.35 μm to inches.?

    2 answers · Mathematics · 9 months ago
  • Find f(x)?

    1 answer · Mathematics · 10 months ago
  • Find f(x)??

    1 answer · Mathematics · 10 months ago
  • Compute the following integral??

    1 answer · Mathematics · 10 months ago