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Get college assignment help at uniessay writers Problem #6 Investor’s Business Daily The mean length of a work week for the population of workers was reported to be 39.2 hours (Investor’s Business Daily, September 11, 2000). Suppose that we would like to take a current sample of workers to see whether the mean length of a work week has changed from the previously reported 39.2 hours. a. State the hypotheses that will help determine whether a change occurred in the mean length of a work week. b. Suppose a current sample of 112 workers provided a sample mean of 38.5 hours. Use a population standard deviation of σ = 4.8 hours. Determine the p-value. c. At α = 0.05, determine if the null hypothesis can be rejected. Explain your conclusion. d. Repeat the preceding hypothesis test using the critical value approach. Problem #7 Raftelis Financial Consulting Raftelis Financial Consulting reported that the mean quarterly water bill in the United States is $47.50 (U.S. News

The number of international visitors to the United States each year (in millions) can be estimated and projected by the formula V = 2.18t 46.46,where t is the number of years since 2004. Find the number of visitors in 2007.

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A golfer’s tee shot follows a path given by y = 96t – 16t2, where y is the height of the ball (in feet) after t seconds of flight. Halfway through its flight, the golf ball reaches the highest point of its trajectory. How high is that?

Mrs. Butler bought 1,800 shares of stock at an offer price of $3 per share. She later sold the shares at $4.60 per share. During the time Mrs. Butler owned the shares, the stock paid a dividend of $0.80 per share. Assuming there are no broker’s commissions, what is Mrs. Butler’s return on investment? Show all your work

Suppose that there are two forces acting on a sky diver: gravity at 150 pounds down and air resistance at 140 pounds up and 20 pounds to the right. What is the net force acting on the sky diver? 32. Suppose that there are two forces acting on a sky diver: gravity at 200 pounds down and air resistance at 180 pounds up and 40 pounds to the right. What is the net force acting on the sky diver?

Use a graphing calculator or computer to verify the given linear approximation at a = 0. Then determine the values of x for which the linear approximation is accurate to within 0.05. 1-(1/5)x

Force, Mass, Acceleration Worksheet Florida Motors is designing a new car prototype that uses solar power. Help the design team find the forces exerted on their prototype by filling in the chart below using the following formula: F = 27.2 x M _____________[Over T] t -F is the force -m is the mass -t is the time in seconds a. Solve F = 27.2 x M _____________[Over T] t for m. Please show your work. (6 points) b. Use your new formula to find the mass of the automobile in kg for each value of force and time given in the table below. Round your answer to the nearest whole number. (4 points) Force (Newtons) Mass (kg) Time (sec) 11000 ? 8 9520 ? 10 12000 7 11500 9

See attach! Question #3,4,5 Thanks!

A 160 in. piece of wire is divided into two pieces and each piece is bent into a square. How should this be done in order to minimize the sum of the areas of the two squares?(a) Express the sum of the areas of the squares in terms of the lengths x (smaller piece) and y (larger piece). (b) Fill in the rest of the constraint equation relating x and y. (c) Solve the optimization problem

Get college assignment help at uniessay writers A certain bacteria population is known to quadruples every 150 minutes. Suppose that there are initially 170 bacteria.

Billy likes to cycle.His bike has wheels of diameter 70cm.He has invented a counter for his bike,which counts the number of revolutions the wheels make.One day,the counter shows 210 revolutions.How far has Billy cycled?

Bruce needs 30 five-foot pieces of rope for a school project. The hardware store sells rope by the yard. How many yards of rope will Bruce need to purchase?

If an open box has a square base and a volume of 93 in.3 and is constructed from a tin sheet, find the dimensions of the box, assuming a minimum amount of material is used in its construction. (Round your answers to two decimal places.)

A baseball player is running from home plate toward first base at a speed of 7 ft/s. At the moment he is 8 feet away from home plate atwhat rate is his distance from second base decreasing

Mr.Harris’s class counted by 25s.Each person said one number.How many people counted to get to 200?How do you know?

a flagpole is sec on opposite sides by two guy wires, each of which is 5ft longer than pole. the distance between the points where the wires are fixed to the ground is equal to the length of one guy wire. How tall is the flagpole

A stone is dropped into a pond, creating a circular ripple. The radius of the ripple increases by 9 cm/s. Determine an equation that models the circular ripple 12 s after the stone is dropped.

A particle is moving along the curve y= 3 sqrt{2 x 5}. As the particle passes through the point (2, 9), its x- coordinate increases at a rate of 2 units per second. Find the rate of change of the distance from the particle to the origin at this instant.

237 654=891 equation

A house-number manufacturer sold numbers to retail stores for $0.9 per digit. A hardware store bought enough digits for two of every house number from 1 to 999. How many digits did the store purchase for house numbers: a. 1-9 b.10-99 c.100-999 d.find the total cost of the house numbers

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November 3, 2019