In: Economics
11. Convert this hexadecimal notation to binary
notation: E4B
Answer format: put a space between each four-bit pattern.
(e.g., 1000 0000 0111)
12. Convert this decimal notation to an excess notation system using bit patterns of length three: -1
13. Convert this two's complement notation to its equivalent base ten representation: 10011
Note: Since the tables in the book on page only show 7 through
-8 in a pattern of length four,
you will need
to create a pattern of length five to show 15 through -16.
14. Convert this decimal notation to an equivalent two's complement representation in which the value is represented in 7 bits: 17
Note: The tables in the book only show 7 through -8 in a pattern
of length four.
You'll have to figure out how to do the 7-bit pattern.
0 is always all zeros in every pattern, and 1 always ends in a
single 1.
Positive numbers begin with leading 0s and negative numbers with
leading 1s.
Format your answer in the following pattern: nnn nnnn
15. Convert the following binary notation to an
equivalent decimal notation: 101.011
Answer format: Express the fractional part of this as a
decimal, not as a fraction. (E.g., 111.1 is 7.5, NOT
7-1/2)
In: Computer Science
Carl's Construction Inc. will buy a machine that has an initial cost of $1,200,000 and is expected to be useful for 8 years. Several estimations have been created but the company is going to focus on 3 main scenarios. One scenario estimates yearly benefits of $310,000 and O&M costs of $60,000 per year with a 30% chance of occurrence. The second scenario involves benefits of $280,000 per year and O&M costs of $70,000 annually with a 50% chance of occurring. The last scenario involves annual benefits of $240,000 and annual O&M costs of $80,000 with a probability of 20%. The company uses an interest rate of 7%. What is the standard deviation of this project?
In: Economics
Carl's Construction Inc. will buy a machine that has an initial cost of $1,200,000 and is expected to be useful for 8 years. Several estimations have been created but the company is going to focus on 3 main scenarios. One scenario estimates yearly benefits of $310,000 and O&M costs of $60,000 per year with a 30% chance of occurrence. The second scenario involves benefits of $280,000 per year and O&M costs of $70,000 annually with a 50% chance of occurring. The last scenario involves annual benefits of $240,000 and annual O&M costs of $80,000 with a probability of 20%. The company uses an interest rate of 7%. What is the expected net present value (NPV) of this project?
In: Economics
In her book Red Ink Behaviors, Jean Hollands reports on the assessment of leading Silicon Valley companies regarding a manager's lost time due to inappropriate behavior of employees. Consider the following independent random variables. The first variable x1 measures manager's hours per week lost due to hot tempers, flaming e-mails, and general unproductive tensions. x1: 1 5 8 4 2 4 10 The variable x2 measures manager's hours per week lost due to disputes regarding technical workers' superior attitudes that their colleagues are "dumb and dispensable". x2: 8 5 6 7 9 4 10 3 Use a calculator with sample mean and sample standard deviation keys to calculate x1, s1, x2, and s2. (Round your answers to two decimal places.) x1 = s1 = x2 = s2 = (a) Does the information indicate that the population mean time lost due to hot tempers is different (either way) from the population mean time lost due to disputes arising from technical workers' superior attitudes? Use α = 0.05. Assume that the two lost-time population distributions are mound-shaped and symmetric. (i) What is the level of significance? . State the null and alternate hypotheses. H0: μ1 = μ2; H1: μ1 > μ2 H0: μ1 = μ2; H1: μ1 < μ2 H0: μ1 = μ2; H1: μ1 ≠ μ2 H0: μ1 ≠ μ2; H1: μ1 = μ2 . (ii) What sampling distribution will you use? What assumptions are you making? The standard normal. We assume that both population distributions are approximately normal with known standard deviations. The Student's t. We assume that both population distributions are approximately normal with unknown standard deviations. The standard normal. We assume that both population distributions are approximately normal with unknown standard deviations. The Student's t. We assume that both population distributions are approximately normal with known standard deviations. What is the value of the sample test statistic? Compute the corresponding z or t value as appropriate. (Test the difference μ1 − μ2. Do not use rounded values. Round your final answer to three decimal places.) (iii) Find (or estimate) the P-value. P-value > 0.500 0.250 < P-value < 0.500 0.100 < P-value < 0.250 0.050 < P-value < 0.100 0.010 < P-value < 0.050 P-value < 0.010 Correct: Sketch the sampling distribution and show the area corresponding to the P-value. WebAssign Plot WebAssign Plot WebAssign Plot WebAssign Plot Correct: (iv) Based on your answers in parts (i)−(iii), will you reject or fail to reject the null hypothesis? Are the data statistically significant at level α? At the α = 0.05 level, we reject the null hypothesis and conclude the data are statistically significant. At the α = 0.05 level, we fail to reject the null hypothesis and conclude the data are statistically significant. At the α = 0.05 level, we reject the null hypothesis and conclude the data are not statistically significant. At the α = 0.05 level, we fail to reject the null hypothesis and conclude the data are not statistically significant. (v) Interpret your conclusion in the context of the application. Fail to reject the null hypothesis, there is sufficient evidence that there is a difference in mean time lost due to hot tempers and technical workers' attitudes. Reject the null hypothesis, there is sufficient evidence that there is a difference in mean time lost due to hot tempers and technical workers' attitudes. Reject the null hypothesis, there is insufficient evidence that there is a difference in mean time lost due to hot tempers and technical workers' attitudes. Fail to reject the null hypothesis, there is insufficient evidence that there is a difference in mean time lost due to hot tempers and technical workers' attitudes. (b) Find a 95% confidence interval for μ1 − μ2. (Round your answers to two decimal places.) lower limit upper limit Explain the meaning of the confidence interval in the context of the problem. Because the interval contains only positive numbers, this indicates that at the 95% confidence level, the mean amount of a manager's hours lost due to hot tempers is greater than those lost due to disputes arising from technical workers' superior attitudes. Because the interval contains both positive and negative numbers, this indicates that at the 95% confidence level, we cannot say that the mean amount of a manager's hours lost per week differs between the two categories. Because the interval contains both positive and negative numbers, this indicates that at the 95% confidence level, the mean amount of a manager's hours lost due to hot tempers is more than those lost due to disputes arising from technical workers' superior attitudes. Because the interval contains only negative numbers, this indicates that at the 95% confidence level, the mean amount of a manager's hours lost due to hot tempers is less than those lost due to disputes arising from technical workers' superior attitudes.
In: Statistics and Probability
One unit of A is made of two units of B, three units of C, and two units of D. B is composed of one unit of E and two units of F. C is made of two units of F and one unit of D. E is made of two units of D. Items A, C, D, and F have one-week lead times; B and E have lead times of two weeks. Lot-for-lot (L4L) lot sizing is used for Items A, B, C, and D; lots of size 60 and 200 are used for Items E and F, respectively. Item C has an on-hand (beginning) inventory of 10; D has an on-hand inventory of 50; all other items have zero beginning inventory. We are scheduled to receive 20 units of Item E in Week 2; there are no other scheduled receipts.
If 20 units of A are required in Week 8, use the low-level-coded bill-of-materials to find the necessary planned order releases for all components. (Leave no cells blank - be certain to enter "0" wherever required.)
In: Operations Management
Write a decision-making program with command-line interface to implement a housing-score calculator (inspired by the 2020 Nifty Decision Makers by Evan Peck)
Your program will consist of two functions:
A sample run of the program:
----------------------------------- HOUSING SCORE CALCULATOR ----------------------------------- QUESTION 1 What year are you? (1,2,3,4): 4 QUESTION 2 How old are you?: 25 QUESTION 3 Are you currently on probation? (Yes or No): No QUESTION 4 Are you Part-time or Full-time? (0 or 1): 1 QUESTION 5 What is your GPA?: 3.9 ----------------------------------- Your housing score is: 7 -----------------------------------
And another sample run of the program:
----------------------------------- HOUSING SCORE CALCULATOR ----------------------------------- QUESTION 1 What year are you? (1,2,3,4): 2 QUESTION 2 How old are you?: 19 QUESTION 3 Are you currently on probation? (Yes or No): Yes QUESTION 4 Are you Part-time or Full-time? (0 or 1): 0 QUESTION 5 What is your GPA?: 2.7 ----------------------------------- Your housing score is: 1 -----------------------------------
The grading script runs the whole program as well as each function separately ('unit tests') to determine correctness. As such, the function names must match exactly as indicated above (else, the scripts cannot find them).
Your program may assume that the input (from the user and to the functions) is always in the expected format.
In: Computer Science
Corporation X common stock is trading at $200 a share and it has 1 million shares outstanding. The stock’s beta is 1.2, the risk-free rate 2%, and the market portfolio is expected to return 9%. Their debt consists of two issues of bonds:
Issue Maturity (years) Coupon (%) Market value (% of par) Amount outstanding (million $)
A 15 8% 101 50
B 25 10% 102 40
Assuming Corporation X is subject to a 21% corporate tax rate, please find its WACC.
In: Finance
Design the lightest W16 tension member section of steel of Fy= 50 ksi, Fu= 65 ksi to support a tensile service dead load PD = 270 k and a tensile service load PL= 220 k. the member is to be 53 ft. long the member is to have two lines of bolts in each flange for 7/8-in bolts (there are three in a line 4 in on center). At the end you should make the necessary checks.
ACI Code
In: Civil Engineering
1. the following information is provided for an intersection that will have signalization. calculate the signal timing for a two phase system also show the phase diagram .
peak hour volumes: SB/NB/WB/EB;360/300/444/482 vph
PHP; SB/NB/WB/EB:0.92/0.88/0.90/0.82
saturation flow: SB/NB/WB/EB:1500/1500/1800/1800vph
distribution of vehicles for turning movements
| South bond | North bond | West bond | East bond | |
| TM | T R L | T R L | T R L | T R L |
| % of TM | 90 4 6 | 88 7 5 | 84 8 6 | 86 15 1 |
| % of CV | 3 0 3 | 4 14 4 | 2 8 10 | 4 15 7 |
yellow interval 3.1 sec. for SB-NB, and 3.4 sec. for WB-EB; lost time 3.3 sec for each of the phases.
2. its a question from transportation
In: Civil Engineering