In: Biology
Given the following information, what is the percentage change in the price of the bonds if interest rates suddenly rise by 2%?
(Please show your work as I am attempting to work out similar problems in excel.)
| Wing Air Inc. | |
| Coupon rate | 7% |
| Settlement date | 1/1/2000 |
| Maturity date | 1/1/2002 |
| Face value | 1,000 |
| # of coupons per year | 2 |
| Airfoil, Inc. | |
| Coupon rate | 7% |
| Settlement date | 1/1/2000 |
| Maturity date | 1/1/2015 |
| Face value | 1,000 |
| # of coupons per year | 2 |
| Change in interest rate | 2% |
In: Finance
An experiment was carried out to study the effect of the percentage of ammonium (Factor A) and the stir rate (Factor B) on the density of the powder produced. The results are in the accompanying table. Complete parts (a) through (e).
At the 0.01 level of significance is there an interaction between the percentage of ammonium and the stir rate?
- Stir_Rate -
Percent_of_Ammonium 100 150
2% 10.83 8.49
2% 14.64 6.84
2% 18.46 9.05
2% 15.86 9.54
30% 12.29 12.97
30% 15.66 15.62
30% 18.26 15.62
30% 15.77 13.81
A.) Determine the value of the test statistic.
FSTAT=
(Round to two decimal places as needed.)
PValue=
B.) at the .01 level of significance, is there an effect due to the percentage of ammonium?
FSTAT=
PValue=
In: Statistics and Probability
What percentage of the variation in the price of a used car can be explained by its age? Round your answer to a percentage with a one decimal digit precision, for credit.
| Age (years) | Price ($) | |
| Mean | 6.133 | 8,404 |
| St. Dev. | 3.378 | 3,334 |
| r | -0.972 |
Data Set:
| Age | Price |
| 1 | 13990 |
| 1 | 13495 |
| 3 | 12999 |
| 4 | 9500 |
| 4 | 10495 |
| 5 | 8995 |
| 5 | 9495 |
| 6 | 6999 |
| 7 | 6950 |
| 7 | 7850 |
| 8 | 6999 |
| 8 | 5995 |
| 10 | 4950 |
| 10 | 4495 |
| 13 | 2850 |
In: Statistics and Probability
We are interested in looking at the percentage of households that own dogs in the U.S. and England. We are given the following information:
|
Number of people Surveyed |
Number of people who own a dog |
|
|
U.S. |
700 |
294 |
|
England |
850 |
391 |
What is the p-value for this test if we are interested in testing to see if there is simply a difference in the proportions of people who own dogs in the U.S. and England?
|
a. |
0.0571 |
|
|
b. |
.10 < p-value < .20 |
|
|
c. |
0.9429 |
|
|
d. |
0.1142 |
In: Statistics and Probability
A. The percentage of the three different political affiliations of the citizens of the United Kingdom is presented in the table below.
Political Party Percentage
Conservative Party 47%
Labour Party 37%
Other 16%
A-1) What is the sampling distribution for the sample proportion of UK citizens who support the Conservative Party?
A-2) What is the sampling distribution for the sample proportion of UK citizens who support the Labour Party?
A-3) What is the sampling distribution for the sample proportion of UK citizens who support neither the Conservative nor Labour Party?
A-4) What is the approximate probability that the sample proportion of UK citizens who support the Conservative party is higher than 0.47?
A-5) What is the approximate probability that the sample proportion of UK citizens who support the Labour party is less than 0.30?
A-6) What is the approximate probability that the sample proportion of UK citizens who support neither the Conservative nor Labour Party falls between 0.1 and 0.2?
In: Statistics and Probability
In a study of the role of young drivers in automobile accidents, data on the percentage of licensed drivers under the age of 21 and the number of fatal accidents per 1000 licenses were determined for 32 cities. The first column contains a number as city code, the second column contains the percentage of drivers who are under 21, and the third column contains the number of fatal accidents is dependent upon the proportion of licensed drivers that are under 21.
Use 30 degrees of freedom, and alpha as 0.01 to get a critical value of 1.697)
16. What is the margin of error for calculating a 90% interval for the slope of the true regression line? (i.e. 1.697 by the standard deviation of the slope
17. What is the lower 90% confidence limit for the slope?
18. What is the upper 90% confidence limit of the slope?
19. What is the value of the test statistic for testing this hypothesis?
| 1 | 11 | 2.352 |
| 2 | 15 | 3.392 |
| 3 | 11 | 2.488 |
|
4 |
17 | 2.707 |
| 5 | 15 | 2.739 |
| 6 | 15 | 3.51 |
| 7 | 18 | 3.867 |
| 8 | 14 | 1.679 |
| 9 | 8 | 0.65 |
| 10 | 8 | 0.965 |
| 11 | 18 | 3.447 |
| 12 | 9 | 0.23 |
| 13 | 5 | 0 |
| 14 | 11 | 1.477 |
| 15 | 14 | 2.378 |
| 16 | 10 | 1.458 |
| 17 | 16 | 2.568 |
| 18 | 16 | 3.018 |
| 19 | 8 | 1.229 |
| 20 | 14 | 1.474 |
| 21 | 8 | 1.415 |
| 22 | 20 | 3.796 |
| 23 | 15 | 1.971 |
| 24 | 8 | 0.467 |
| 25 | 10 | 1.526 |
| 26 | 11 | 0.676 |
| 27 | 15 | 2.526 |
| 28 | 9 | 1.311 |
| 29 | 5 | 0.223 |
| 30 | 13 | 2.989 |
| 31 | 8 |
1.107 |
| 32 | 12 | 0.401 |
In: Statistics and Probability
A common criticism of surveys is that they poll only a very small percentage of the population and therefore cannot be accurate. Is a sample of only 1961 adults taken from a population of 225,139,000 adults a sample size that is too small? Show why the sample size of 1961 is or is not too small.
In: Statistics and Probability
A population is normally distributed with mean ? and standard deviation ?. Find the percentage of values which are between ?−2? and ?+2?.
In: Statistics and Probability
A sample of biological culture was submitted to a chemical laboratory for analysis of the percentage by weight of each major element. The composition of the cells by weight was found to be 48.9% C, 5.2% H, 24.8% O, 9.46% N, and 9.2% ash.
Prepare an empirical formula for the cells
Determine the COD/organic weight ratio for the cell
Determine the theoretical oxygen demand including both COD and NOD
(nitrification oxygen demand)
If the organics are 80% biodegradable, what is the ultimate BOD of the sample?
What is the TOC?
In: Civil Engineering