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(1) A random sample of 10 economists produced the following forecasts for percentage growth in real domestic product in the next year:2.2 2.8 3.0 2.5 2.4 2.6 2.5 2.4 2.7 2.6
Use unbiased estimation procedures to find point estimates for the following:
(a) The population mean? (b) The population variance? (c) The variance of the sample mean (d) The population proportion of economists predicting growth of at least2.5% in real gross domestic product (e) The variance of the sample proportion of economists predicting growth of at least 2.5% in real gross domestic product.
gary deposits 3700 in an account that pays 2.15 simple interest. he keeps the money in the account for three years but
A manufacturer of lighting fixtures has daily production costs of C= 800-10x+0.25x^2, where C is the total cost (in dollars) and x is the number of units produced. How many fixtures should be produced each day to yield a minimum cost? What is the ..
A spotlight creates a circle on a smooth surface. The radius of the circle is 15 feet. Rounding to the nearest foot, find the length of a square with the same area as the circle.
the wind in 3 hours and travel the same distance against the wind in 8 hours. What is the speed of the wind?
Angus invested $18,000, part at 3% and part at 5%. If the total interest at the end of the year is $660, how much did he invest at each rate?
An anchor weighing 105 lb in water is attached to a chain weighing 2 lb/ft in water. Find the work done to haul the anchor and chain to the surface of the water from a depth of 30 ft.
A check register shows the current cash balance to be $1,260.40. A check was written after this cash balance date for $193.84. Compute the new cash balance shown in the check register.
your boss makes the claim that the average body fat in men attending silvers gym is 20. you believe that the average
a ball falls from the height ofd 15 feet, each time it hits the ground it bounces up 60%of the height it fall. Assume it goes on forever, what is the total distance it travels.
Find the probability for the serum cholesterol level.
Probability: Joint Probability Mass Function, Covariance and Variance Let X and Y have joint probability mass function Pr{X = i, Y = j}= c(i + 1)(j + 2) for i >= 0, j >= 0, and i + j
Two rainstorms occurred in one week in a certain area. The first storm lasted 25 hours and the second storm lasted 15 hours for a total 1025 mL of rain. What was the rate of rainfall for each of the two storms if the sum of the two rates was 55 mL..
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