Match each term to its correct definition or description. Each description might match more than one term.
|
|
In: Biology
In an accelerated failure test, components are operated under extreme conditions so that a substantial number will fail in a rather short time. In such a test involving two types of microchips, 620 chips manufactured by an existing process were tested, and 125 of them failed. Then, 820 chips manufactured by a new process were tested, and 130 of them failed. Find a 90% confidence interval for the difference between the proportions of failures for chips manufactured by the two processes. (Round the final answers to four decimal places.)
The 90% confidence interval is ( . , ).
In: Statistics and Probability
| 4. Down: The amount of an individual's paycheck which remains after the payment of income taxes. (Three Words) | |
|---|---|
| 5. Down: Total wealth based on the difference between total assets owned and total debt. (Two Words) | |
| 6. Down: The type of assets or liabilities which are not short-term in nature. (Two Words) | |
| 7. Down: Obligations to creditors. | |
|
8. Down: A ratio which indicates the percentage of assets
financed with debt funding. |
In: Finance
a large hotel chain, has been using activity-based costing to determine the cost of a night's stay at their hotels.
One of the activities, "Inspection," occurs after a customer has checked out of a hotel room.
Fitzgerald
inspects every
10th
room and has been using "number of rooms inspected" as the cost driver for inspection costs. A significant component of inspection costs is the cost of the supplies used in each inspection.
Dawn
McAdams,
the chief inspector, is wondering whether inspection labor-hours might be a better cost driver for inspection costs.
Dawn
gathers information for weekly inspection costs, rooms inspected, and inspection labor-hours as follows:
|
Week |
Rooms Inspected |
Inspection Labor-Hours |
Inspection Costs |
|---|---|---|---|
|
Week 1 |
260 |
85 |
$1,800 |
|
Week 2 |
328 |
129 |
2,560 |
|
Week 3 |
341 |
101 |
2,310 |
|
Week 4 |
437 |
142 |
2,850 |
|
Week 5 |
200 |
67 |
1,460 |
|
Week 6 |
245 |
80 |
1,750 |
|
Week 7 |
258 |
127 |
1,780 |
|
Week 8 |
331 |
146 |
2,260 |
Dawn
runs regressions on each of the possible cost drivers and estimates these cost functions:
Inspection
Costs=$246.60
+
($6.17
x Number of rooms inspected)
Inspection
Costs=$787.71
+
($11.94
x Inspection labor-hours)
|
1. |
Explain why rooms inspected and inspection labor-hours are plausible cost drivers of inspection costs. |
|
2. |
Plot the data and regression line for rooms inspected and inspection costs. Plot the data and regression line for inspection labor-hours and inspection costs. Which cost driver of inspection costs would you choose? Explain. |
|
3. |
Dawn expects inspectors to inspect306 rooms and work for124 hours next week. Using the cost driver you chose in requirement 2, what amount of inspection costs shouldDawn budget? Explain any implications ofDawn choosing the cost driver you did not choose in requirement 2 to budget inspection costs. |
In: Accounting
50.
{Exercise 8.2 (Algorithmic)}
A simple random sample of 90 items from a population with σ = 7 resulted in a sample mean of 31.
If required, round your answers to two decimal places.
a. Provide a 90% confidence interval for the
population mean.
- to -
b. Provide a 95% confidence interval for the
population mean.
- to -
c. Provide a 99% confidence interval for the
population mean.
- to -
In: Statistics and Probability
|
Day |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
|
Number of Aides Absent |
5 |
8 |
11 |
15 |
4 |
2 |
7 |
1 |
4 |
6 |
14 |
19 |
3 |
5 |
8 |
In: Statistics and Probability
Consider the following game. You and a friend are given the opportunity to play a winner take all game worth $20 dollars. The rules are such that twenty $1 bills are placed on a table. Players take turns picking up one, two, or three of these $1 bills. (For example, you could take three of them and then your friend could take one, then you go again and could take two of them, etc.). The person who picks up the last dollar bill gets all the money. Do you want to go first or second in this game and why?
In: Economics
Given the following discrete system, find the following
| x | 3 | 4 | 5 | 6 | 7 |
| P (x) | .4 | .2 | .2 | .1 | .1 |
a. E(X)
round to one decimal
b. The Variance
round to two decimals
c. Standard deviation
round to two decimals
d. find P(x ? 5)
round to one decimal using leading zeros
e. find P (x > 4)
round to one decimal using leading zeros
In: Statistics and Probability
Your child will start college 15 years from today. You believe it will cost $16,000 for the first two years and $18,000 for the last three, payable at the beginning of each year of college. How much do you have to save at the end of each year for 15 years starting now in order to pay tuition and book costs if the account pays 8% interest, compounded annually?
In: Finance
Last year Janet purchased a $1,000 face value corporate bond with an 8% annual coupon rate and a 30-year maturity. At the time of the purchase, it had an expected yield to maturity of 12.56%. If Janet sold the bond today for $927.06, what rate of return would she have earned for the past year? Do not round intermediate calculations. Round your answer to two decimal places.
In: Finance