Mileage tests are conducted for a particular model of automobile. If a 98% confidence interval with a margin of error of 1 mile per gallon is desired, how many automobiles should be used in the test? Assume that preliminary mileage tests indicate the standarddeviation is 2.5 miles per gallon. Round your answer up to the nearest whole number.

Confidence interval = 98% Margin of error = 1 mile per gallon Standard deviation (S) = 2.5 miles per…

Answered: Mileage tests are conducted for a…

Essentials Of Investments

11th Edition

ISBN:9781260013924

Author:Bodie, Zvi, Kane, Alex, MARCUS, Alan J.

Publisher:Bodie, Zvi, Kane, Alex, MARCUS, Alan J.

Chapter1: Investments: Background And Issues

Section: Chapter Questions

Problem 1PS

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Use the Regression tool on the accompanying wedding data, using the wedding cost as the dependent variable and attendance as the independent variable. Complete parts a through o. Click the icon to view the wedding data. ine siope indicates that for eacn increase or 1 in attendance, the predicted weading cost is estimated to increase by a value equal to o₁.. OC. It is not appropriate to interpret the slope because it is outside the range of observed attendances. OD. The slope indicates that for each increase of 1 in wedding cost, the predicted attendance is estimated to increase by a value equal to b Interpret the Y-intercept of the regression equation. Choose the correct answer below. X Wedding Attendance and Cost Wedding Cost 58700 Attendance OA. The Y-intercept indicates that a wedding with an attendance of 0 people has a mean predicted cost of $bo OB. The Y-intercept indicates that a wedding with a cost of $0 has a mean predicted attendance of by people. OC. It is not appropriate to…
Please use the two images below to solve this practice problem. Write clearly Thank you
More real estate Consider the Albuquerque home sales from Exercise 29 again. The regression analysis gives the model Price = 47.82 + 0.061 Size. a) Explain what the slope of the line says about housing prices and house size. b) What price would you predict for a 3000-square-foot house in this market? c) A real estate agent shows a potential buyer a 1200-square- foot home, saying that the asking price is $6000 less than what one would expect to pay for a house of this size. What is the asking price, and what is the $6000 called?
I asked this question before, and got an answer, but I have a question about the response that was given. The original question was: For an initial investment of 100, an investment yields returns of X1 and X2, where X1 and X2 are independent normal random variables with mean 60 and variance 25. What is the probability that the rate of return of this investment is greater than 10%? In the answer that was given it says that the gain of the investment is X1+X2. My question is why can we just group those together as one amount? I was given a formula in my class that says the return on the investment would be the solution to the equation: -100+ X1/(1+r) + X2/(1+r)2=0. If this formula is used, a different solution would result for this problem.
The number of properties newly listed with a real estate agency in each quarter over the last four years is given below. Assume the time series has seasonality without trend. Quarter 1 2 3 4 Year 1 73 89 123 92 Year 2 81 87 115 95 Year 3 76 91 108 87 Year 4 77 88 120 97 a. Develop the optimization model that finds the estimated regression equation that minimize the sum of squared error. b. Solve for the estimated regression equation. c. Forecast the four quarters of Year 5. *Please solve in excel
How large a sample should be selected to provide a 95% confidence interval with a margin of error of 6? Assume that the population standard deviation is 20. Round your answer to next whole number.
Answer the given question with a proper explanation and step-by-step solution. Please provide the answer using the math tool otherwise I give the downvote.
Can you please do a step by step calculation on the standard deviation please? My calculation isn't coming up to 2.28%? Thanks
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