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A survey of 39 adults found that the mean age of a person's primary vehicle is 5.6 years. Assume that the standard deviation of the population is 0.8 year.
a. Estimate the population mean age of all persons' primary vehicles with 90% confidence. Please show the formula that you used as well as your calculations for full credit.
b. Interpret your confidence interval in the context of the problem (no symbols).
Create a bar graph using two different colors to represent the male and female categories. Use age to categorize and graph the average height.
A ship travels 91 km on a bearing of 40°, and then travels on a bearing of 130° for 138 km. To the nearest kilometer, find the distance from the start to the end of the trip.
Explain whether the graph has a maximum or minimum point.
The dimensions of a triangular lot are 160 feet by 80 feet by 120 feet. If the price of such land is $3 per square foot, how much does the land cost?
Find the product of all the three zero of the second polynomial
When the ticket price is 7 dollars the average attendance is 45000. When the price is dropped to 5 dollars then the average attendance rises to 50000. Find the demand function and how should the ticket price be set to maximize revenue?
find the perimeter of the triangle lying in xyz-space with vertices at the points: (5,-2,3), (4,7,3), and (4,7,9)
Solve the system using elementary row operations on the equations of the augmented matrix. Follow the systematic elimination proceedure.
Does this sample data provide evidence (with a = 0.10), that the mean annual dental expense per employee is less than $500?
In Martian number system, 5 and 8 are the roots of the equation 5X2 - 50X + 125 = 0. Assuming that the number system on Mars developed in the same way as the number system on Earth, how many fingers does a Martian have?
Talk about the old days! A long-playing record has a radius of 6 inches. How far does a fly sitting on the rim of the record travel after the record has turned around once? (Use pi = 3.14).
Muir Manufacturing produces two popular grades of commercial carpeting among its many other products. In the coming production period, Muir needs to decide how many rolls of each grade should be produced in order to maximize profit
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