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95% of the population of weight losses lies between -1.66 pounds and 23.66 pounds. (d) Construct a 90% confidence interval on the population mean weight loss. Confident that the population mean weight loss, , of this exercise program is between 1.28 pounds and 20.72 pounds. How Do We Choose the Sample Size for a Study? (e) Which confidence interval is wider?
What is the standard deviation of this sampling distribution? (Round your answer to two decimal places.)
Find the z value to the right of the mean such that 85% of the total area under the standard normal distribution curve lies to the left of it?
Show that vector p and q are orthogonal
a kcicker is setting up for a field goal. he goal is 120 feed away and 100 feet high. the kicker can give a initial speed of 75ft/s to the ball. what range of angles of elevation are possibale to kick the ball so it passes over the goal(no air res..
Find the work done pulling the bucket to the top of the well. Your answer must include the correct units.
What percent of new expansion should be financed by equity?
The size of a certain bacteria culture doubles each hour. If the number of bacteria present initially is 3000, how many would be present at the end of 6 hours?
A firm has two fixed resources that impose limits on its production activities. For a particular period of time it has 30 hours of resource 1 available and 80 hours of resource 2.
A 42 inch piece of string is cut into two pieces. One piece is used to form a circle and the other to form a square. The two peices of string are not equal in length. How should the string be cut so the sum of the areas is a minimum?
From the top of a 295 ft lighthouse, the angle of depression to a ship in the ocean is 23°. How far is the ship from the base of the lighthouse? Round your answer to the nearest foot.
the base of a cylindrical water tank has an area of 28 feet. when the tank is full it hold 140 feet of water. what is the hight of the tank?
Show a sketch of a region satisfying set of inequalities or system of inequalities
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