. A group of 30,000 randomly selected college students were surveyed and asked whether they have a TV in their dorm room. Only 55% said yes to the question. What is the sample? what is the population?
A Norman window consists of a rectangle surmounted by a semicircle. Find the shape of such a window that will admit the most light if the perimeter is 12 meters.
8. A researcher expects a treatment to produce an increase in the population mean. The treatment is evaluated using a one tailed hypothesis test, and the test produces z = +1.85. Based on this result what is the correct statistical decision?
D/dx square root of x to the third power plus two
Is this equation correct: (x y)3 = x y3 ?
a 500grams sample of an unknown material require 750 calories of heat to raise its temperature by 50 c. using equation and identify the material. i dont understand
a manufacturer of automobile batteries states that their slow die battery has a mean life of 50 months with a standard deviation of 6 months. if a consumer projection group randomly samples 49 of these batteries, what is the probability that the mean life of the consumer's group's...
Give the boundaries of each value 42.8
Matt Matics runs the game "skee-ball" at an amusement park. A player wins a prize by scoring over 200 points. Matt Matics has noticed that, overall, in 80% of the games the players wins. On the average night, 600 games are played. What is the probability that there will be over...
Consider the trash bag problem. Suppose that an independent laboratory has tested trash bags and has found that no 30-gallon bags that are currently on the market have a mean breaking strength of 50 pounds or more. On the basis of these results, the producer of the new, improved trash bag feels...
Ask a new Math Question
Tips for asking Questions
- Provide any and all relevant background materials. Attach files if necessary to ensure your tutor has all necessary information to answer your question as completely as possible
- Set a compelling price: While our Tutors are eager to answer your questions, giving them a compelling price incentive speeds up the process by avoiding any unnecessary price negotiations
1. I’m having problems with my math. Can you help me? All I need is an example just to make sure I'm on track.
- Solve the following
- a) 3/(n+1)-1/(n+1)=14/(n^2-1)
- b) 1/(y-1 )+y/(1-y)
- d) (x-2)/(8x-24)*(5x-15)/(x^2 -4)
- e) z/(z-1)+1/2=3/z
- f) (x-3)/(x^2+2x-15)-(4-x)/(x^2-9x+20)
- 2. How do I set up this problem? An exam contains five "true or false" questions. How many of the 32 different ways of answering these questions contain 3 or more incorrect answers?