A hamburger chain sells large hamburgers. When we take a sample of 40 hamburgers and weigh them, we find that the mean is 0.52 pounds and the standard deviation is 0.3 pound.
Technology Output N 40 Mean 0.52 STDEV. 0.3000 One-Sample T SE Mean 0.0474 95% CI (0.4241, 0.61590)
a. A technology input menu for calculating a confidence interval requires a sample size, a sample mean, and a sample standard deviation. State how you would fill in these numbers.
Sample Size: Answer ____ Sample Mean: Answer ____ Standard Deviation: Answer _____ (Type an integer or a decimal do not round)
b. Choose the correct interpretation of the confidence interval below and fill in the answer boxes to complete your choice. (Round to four decimal places as needed. Use ascending order.) Using the accompanying technology output, report the confidence interval in a carefully worded sentence.
A.We are 95% confident that the population mean is between Answer ___ and ___.
B.There is a 95% probability that the recorded sample mean is between Answer ___ and ___.
C.There is a 95% probability that the population mean is between Answer ___ and ___.
D.We are 95% confident that the recorded sample mean is between Answer ___ and ___.
In: Statistics and Probability
The costs to a store for two models of Global Positioning System (GPS) receivers are $80 and $100. The $80 model yields a profit of $25 and the $100 model yields a profit of $30.
Market tests and available resources determined the constraints below.
(a) The merchant estimates that the total monthly demand will not exceed 200 units.
(b) The merchant does not want to invest more than $18,000 in GPS receiver inventory.
What is the optimal inventory level for each model? What is the optimal profit?
A fruit grower has 150 acres of land for raising crops A and B. The profit is $185 per acre for crop A and $245 per acre for crop B.
Research and available resources determined the constraints below.
(a) It takes 1 day to trim an acre of crop A and 2 days to trim an acre of crop B, and there are 240 days per year available for trimming.
(b) It takes 0.3 day to pick an acre of crop A and 0.1 day to pick an acre of crop B, and there are 30 days per year available for picking.
What is the optimal acreage for each fruit? What is the optimal profit?
In: Statistics and Probability
Problem 1:
Strategies for treating hypertensive patients by
nonpharmacologic methods are compared by establishing three groups
of hypertensive patients who receive the following types of
nonpharmacologic therapy:
The reduction in diastolic blood pressure is noted in these patients after a 1-month period and are given in the table below.
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Work through Example 13 (which starts on p. 36 of the lab manual) and then do the following using the data from Problem #1 above. (a) Find the p-value for the hypothesis test in Problem #1(a) above. (b) Construct a normal probability plot of the residuals which includes the p-value for the normality test (similar to Figure 9, p. 41 of the lab manual). Enter the p-value into the answer box. (c) Find the p-value for the hypothesis test of equality of population variances (using Bartlett's test).
In: Math
The Neal Company wants to estimate next year's return on equity (ROE) under different financial leverage ratios. Neal's total capital is $11 million, it currently uses only common equity, it has no future plans to use preferred stock in its capital structure, and its federal-plus-state tax rate is 40%. The CFO has estimated next year's EBIT for three possible states of the world: $5.1 million with a 0.2 probability, $2.1 million with a 0.5 probability, and $0.7 million with a 0.3 probability. Calculate Neal's expected ROE, standard deviation, and coefficient of variation for each of the following debt-to-capital ratios. Do not round intermediate calculations. Round your answers to two decimal places at the end of the calculations.
1. Debt/Capital ratio is 0.
| RÔE = | % |
| σ = | % |
| CV = |
2. Debt/Capital ratio is 10%, interest rate is 9%.
| RÔE = | % |
| σ = | % |
| CV = |
3. Debt/Capital ratio is 50%, interest rate is 11%.
| RÔE = | % |
| σ = | % |
| CV = |
4. Debt/Capital ratio is 60%, interest rate is 14%.
| RÔE = | % |
| σ = | % |
| CV = |
In: Finance
Need to HAVE a web page that uses a loop to allow a teacher to enter the following information for all students in a class: student's name, mt grade, f grade, hW grade, attendance grade.
program should calculate each student's numeric total grade based on the following formula:course grade = (mT*0.3)+(f*0.4)+(homework*0.2)+(attendance*0.1)File Table.html looks like this:When the button is clicked, you need to prompt the user the following information:-number of students (which will determine the number of rows in your table)-student's name-mT grade-f grade-homework grade-attendance gradeOnce all the information above is provided, a JavaScript-generated table must be created.
DEFAULT CODE
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title>Student's Information</title>
</head>
<body>
<table align ="center" width ="70%">
<tr>
<td colspan ="2">
<h1> </h2>
<h1>Student's Information</h1>
<p><input type="button" id="students" value="Enter Data" /></p>
</td>
</tr>
</table>
</body>
</html>
In: Computer Science
You are working on a feedwater system for a chemical engineering plant. A section of the pipe passes through a stream of width ? = 4 m which flows at constant temperature and velocity (?∞ = 12 °C,?∞ = 1.7 m⁄s). You need to determine the temperature change of the feedwater as it passes through the stream. The feedwater is 20 °C as it enters the section passing through the stream. The pipe diameter is 4 inches and the volume flowrate is 50 GPM.
a. Calculate the Reynolds number of the water flowing inside of the pipe. Is the flow laminar or turbulent? (We can continue with this problem either way)
b. Calculate the heat transfer coefficient in the pipe. The thermal conductivity of water is 0.6 W/m-°C and the Prandtl number is 7.5. Use an appropriate laminar flow correlation, or assuming fully developed turbulent flow, the Dittus-Boelter correlation is appropriate: ?̅̅̅?̅ ? = ℎ̅? ? = 0.023 ∗ ??? ( 4 5 ⁄ ) ?? (0.3)
c. Calculate the temperature change of the water assuming the pipe wall temperature is equal to the stream temperature. The specific heat of water is 4200 J/kg-°C. Use the following transformation for integration: ?(?) = (?(?) − ?∞)
d. Calculate the total heat transfer rate.
In: Other
Better Mousetraps has developed a new trap. It can go into production for an initial investment in equipment of $5.4 million. The equipment will be depreciated straight - line over 6 years to a value of zero, but, in fact, it can be sold after 6 years for $606,000. The firm believes that working capital at each date must be maintained at a level of 10% of next year’s forecast sales. The firm estimates production costs equal to $1.70 per trap and believes that the traps can be sold for $7 each. Sales forecasts are given in the following table. The project will come to an end in 6 years, when the trap becomes technologically obsolete. The firm’s tax bracket is 35%, and the required rate of return on the project is 12%. Year: 0 1 2 3 4 5 6 Thereafter Sales (millions of traps) 0 0.5 0.7 0.9 0.9 0.6 0.3 0 Suppose the firm can cut its requirements for working capital in half by using better inventory control systems. By how much will this increase project NPV? (Enter your answer in millions rounded to 4 decimal places.)
In: Finance
When an automobile is stopped by a roving safety patrol, each tire is checked for tire wear, and each headlight is checked to see whether it is properly aimed. Let X denote the number of headlights that need adjustment, and let Y denote the number of defective tires.
(a) If X and Y are independent with pX(0) = 0.5, pX(1) = 0.3, pX(2) = 0.2, and pY(0) = 0.1, pY(1) = 0.2, pY(2) = pY(3) = 0.05, pY(4) = 0.6, display the joint pmf of (X, Y) in a joint probability table.
| y | ||||||
|
p(x, y) |
0 | 1 | 2 | 3 | 4 | |
| x | 0 | |||||
| 1 | ||||||
| 2 | ||||||
(b) Compute P(X ≤ 1 and Y ≤ 1) from the
joint probability table.
P(X ≤ 1 and Y ≤ 1) =
Does P(X ≤ 1 and Y ≤ 1) equal the
product P(X ≤ 1) · P(Y ≤
1)?
YesNo
(c) What is P(X + Y = 0) (the
probability of no violations)?
P(X + Y = 0) =
(d) Compute P(X + Y ≤ 1).
P(X + Y ≤ 1) =
In: Math
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Hudson Corporation is considering three options for managing its data warehouse: continuing with its own staff, hiring an outside vendor to do the managing (referred to as outsourcing), or using a combination of its own staff and an outside vendor. The cost of the operation depends on future demand. The annual cost of each option (in thousands of dollars) depends on demand as follows:
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In: Operations Management
Wildhorse Corporation is financed with debt, preferred equity,
and common equity with market values of $25 million, $13 million,
and $32 million, respectively. The betas for the debt, preferred
stock, and common stock are 0.3, 0.5, and 1.2, respectively. The
risk-free rate is 4.00 percent, the market risk premium is 6.01
percent, and Wildhorse’s average and marginal tax rates are both 30
percent.
Excel Template
(Note: This template includes the problem statement as it
appears in your textbook. The problem assigned to you here may have
different values. When using this template, copy the problem
statement from this screen for easy reference to the values you’ve
been given here, and be sure to update any values that may have
been pre-entered in the template based on the textbook version of
the problem.)
(a1)
What is the company’s cost of capital? (Round intermediate calculation to 4 decimal places, e.g. 1.2512 and final answers to 3 decimal places e.g. 5.215%.)
| Costs of debt | % | ||
| Costs of common equity | % | ||
| Costs of preferred equity |
Costs of debt ? Costs of common Equity? Costs of preferred equity ?
In: Finance