Select the best engine in term thermal efficiencies of an actual and reversible heat engine of two heat engine given below and give reason for your selection

Engine A:-
Source temperature 800K, heat input rate 450 kW, heat rejection rate 300 kW, sink temperature 315K

Engine B:-
Source temperature 650K, heat input rate 345 kW, pumping power 5 kW, turbine power 120 kW, sink temperature 300K.

Again, there is research on the relationship between gender and sense of direction. Recall that, in their study, the spatial orientation skills of 30 male and 30 female students were challenges in a wooded park near the Boston College campus in Newton, Massachusetts. The participants were asked to rate their own sense of direction as either good or poor.

In the park, students were instructed to point to predesignated landmarks and also to the direction of south. For the female students who had rated their sense of direction to be good, the table above provides the pointing errors (in degrees) when they attempted to point south.

1. If, on average, women who consider themselves to have a good sense of direction do not better than they would by just randomly guessing at the direction of south, what would their mean pointing error be?
2. At the 1% significance level, do the data provide sufficient evidence to conclude that women who consider themselves to have a good sense of direction really do better, on average, than they would by just randomly guessing at the direction of south? Use a one-mean t-test.
3. Obtain a normal probability plot, boxplot, or stem-and-leaf diagram of the data. Based on this plot, is use of the t-test reasonable? Explain your answer.

using c++ You have been contracted to build a hotel reservation system. This is the system that hotel desk clerks will use to take desk reservations.

Assumptions: This is acting as though the only reservations taken are at the desk. All reservations are for one night. The hotel is empty when you start the program.

First, this program will give the full inventory of rooms in the hotel.

Total rooms: 122

There are four types of rooms with these prices:

• Standard Rooms, Courtyard - 70 - $125 a night
• Standard Room, Scenic - 35 - $145 a night
• Deluxe Suite - 15 - $350 a night
• Penthouse - 2 - $1135 a nigh

  Second, the program will allow for a room to be reserved for one night. The program will keep track of the inventory as rooms are being reserved.

  Third, the program will keep track of revenue brought in for the day from reserved rooms.

  Fourth, the user can choose a getTotal() function that will display remaining room inventory, what was reserved and revenue generated for the day.

• PLEASE NOTE: This project must incorporate a class friend or class inheritance structure.

1. Suppose individuals A and B have the same money income and tastes and face the same set of prices of all goods except access to a free National Park. (They will be 2 points on the same demand curve; find the equation to the line and the X and Y intercepts.) Individual A lives farther away than individual B and has higher travel costs. Their annual use is summarized as:

How much consumer surplus does each individual receive per year from the park usage? What are the total social benefits (as measured by the sum of the consumer surplus measures) from the park?

2. A worker, who is typical in all respects, works for a wage of $50,000 per year in a perfectly safe occupation. Another typical worker does a job requiring exactly the same skills as the first worker, but in a risky occupation with a known death probability of 1 in 10,000 per year, and receives a wage of $60,000 per year. What value of a human life for workers with these characteristics should a cost-benefit analyst use?  

3. Manufacturers in an urban environment are currently producing 25,000 widgets per year. Their gross revenue is $300 per widget with variable costs of $125 per widget. Air quality in the city has fallen to a level of 20 points measured on a 0-100 scale. Three proposals could improve the air quality. Option I involves annual direct costs of $100,000 which raises the air quality index to 32; option 2 costs $130,000 per year and raises the index to 42; option 3 costs $150,000 per year and raises the index to 50. Also producers are required to reduce their widget output by: 5% under option 1, 10% under option 2, and 15% under option 3.

a. Which option has the lowest total opportunity cost?

b. Which option has the lowest cost per unit of air quality improvement?

c. Why might neither of these be the most efficient?

The Wilton is an all-inclusive spa and hotel in the heart of Brooklyn and uses guests as its measure of activity. During June, The Wilton budgeted for 2,000 guests, but it actually hosted 2,100 guests. The hotel used the following revenue and cost formulas in its budgeting, where q is the number of guests:

Revenue: $62.90q
Personnel expenses: $28,500 + $20.40q
Food and beverage supplies: $1,400 + $9.90q
Occupancy expenses: $8,200 + $3.30q
Spa expenses: $4,000 + $0.40q

The hotel reported the following actual results for June:

Revenue                                       $129,450

Personnel expenses                      $ 74,770

Food and beverage supplies           $ 22,940

Occupancy expenses                     $ 14,640

Spa expenses                                   $   4,740

Required:
a. Prepare a flexible budget performance report showing The Wilton’s revenue and spending variances and activity variances for June. Label each variance as favorable (F) or unfavorable (U), filling out the shaded squares. (22 points)

b. Describe at least two potential reasons for the revenue, spa expenses and food/beverage supplies variances found above. Are any of the variances related? Describe. (6 pts)

1. How much is your payment on a 200k mortgage at 3.5% for a 30 year fixed? Use 250k for the sales price and let the system calculate your taxes and insurance costs. Use the Mortgage Calculator in the Motley Fool Foolish Calculators
2. Pick another housing calculator. Create your own problem using that calculator. Solve the problem and write the question below.

You may need to use the appropriate technology to answer this question.

Tourism is extremely important to the economy of Florida. Hotel occupancy is an often-reported measure of visitor volume and visitor activity (Orlando Sentinel). Hotel occupancy data for February in two consecutive years are as follows.

(b)

What is the estimated proportion of hotel rooms occupied each year?

current previous

(c)

Calculate the test statistic. (Round your answer to two decimal places.)

What is the p-value? (Round your answer to four decimal places.)

p-value =

(d)

What is the 95% confidence interval estimate of the change in occupancy for the one-year period? (Round your answers to four decimal places.)

to