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A certain population has a mean of 488 and a standard deviation of 31. Many samples of size 51 are randomly selected and the means calculated.
(a) What value would you expect to find for the mean of all these sample means? (Round your answer to the nearest whole number.)
(b) What value would you expect to find for the standard deviation of all these sample means? (Round your answer to two decimal places.)
(c) What shape would you expect the distribution of all these sample means to have?
Mattel Corporation produces a remote-controlled car that requires three AA batteries. The mean life of these batteries in this product is 35 hours.
Real Life Application of Linear Eqations : A mathematician has developed a model indicating a woman with x years of education can expect to earn y = 1200x + 6300 dollars a year.
Calculate the mean of this sampling distribution
An older computer's CPU speed was 8 megahertz, but after an upgrade it was 200 megahertz. What percentage is the speed increase?
A clock company is concerned about errors in assembly of their custom made clocks. A random sample of 120 clocks from today's production yields nine clocks with assembly errors.
A ski jump is design to follow the path given by the equations: x=3.5t^2 and y=20.0+0.120t^4 - 3.00 sqrt(t^4+1) (0 less than or equal to (t) less than or equal to 4.00 s) ( x and y in m, t in s). Find the velocity and acceleration of a skier when ..
Stephanie claims that your model is fundamentally flawed, extend and refine your model to make it more realistic and clearly state any assumptions you used to create your model.
Independent flips of a coin that lands on heads with probability p are made. What is the probability that the first four outcomes are
Determine the probability that the cholesterol content will be greater than 220 milligrams.
Find f'(x) using the appropriate rule and simplify to one expression with positive exponents. Find all values of x, using algebra, where f'(x)=0 (Write your answer with positive exponents)
What score does a patient at the 75th percentile receive? d. What percentage of patients score between 185 and 199?
The derivative of a continuous function at x is the slope of the tangent line to the curve at x. The attached pdf file develops the idea of a derivative first using slopes of secant lines and then introducing and explaining the difference quotient..
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