1. The National Association of Truck Drivers claims that the average truck driver travels 60000 miles per year. The population standard deviation of the mileage is 5000 miles. The Connecticut Valley Trucking Corporation surveyed 48 Truck Drivers and found the mean mileage for its Truck Drivers was 59500 miles driven per year. Is Connecticut Valley’s mileage different from that claimed by the National Association of Truck Drivers at the .05 significance level?

Question 1:

A random sample of   n = 16 mid-sized cars tested for fuel consumption gave a mean of   x ¯ = 22.81 miles per gallon with a standard deviation of   s = 2.08 miles per gallon.

Assuming that the miles per gallon given by all mid-sized cars have a normal distribution, find a 99 % confidence interval for the population mean,   μ .

Round your answers to two decimal places.

Caro Manufacturing has two production departments, Machining and Assembly, and two service departments, Maintenance and Cafeteria. Direct costs for each department and the proportion of service costs used by the various departments for the month of August follow.

Required:

Use the step method to allocate the service costs, using the following:

a. The order of allocation starts with Maintenance.

b. The allocations are made in the reverse order (starting with Cafeteria).

Question B5

(a) A very hot 0.8 kg copper cylinder at temperature 365.84℃ is dropped into a 0.2 kg copper bowl contains 0.3 kg of water at 20℃. The final temperature of the system is 85℃. Given that specific heat of copper 386 J/kg·K and specific heat of water 4190 J/kg·K.

(i) Find the entropy change ∆S1 of the copper bowl and water.

(ii) Find the entropy change ∆S2 of the copper cylinder.

(iii) Find the net entropy change ∆Snet of the system. Is the process reversible or irreversible?

(b) What are the four processes of Carnot cycle?

Project #2

## Language Should be Python. Using for, while, if, elif only. No advanced functions.

Assignment Specifications

The program will compute and display information for a company which rents vehicles to its customers. For a specified customer, the program will compute and display the amount of money charged for that customer’s vehicle rental.

1. The program should start by asking the user if he wants to continue. The answer is ‘Y’ for yes or ‘N’ for no.

The basic structure of the main loop is

Prompt to see if the user wants to continue

While the value is ‘Y’:

All your other code goes here

Prompt to see if the user wants to continue

2. It will then continue to prompt the user to enter the following four items for a given customer (in the specified order):
3. 1. The customer's classification code (a character)
4. 2. The number of days the vehicle was rented (an integer)
5. 3. The vehicle's odometer reading at the start of the rental period (an integer)
6. 4. The vehicle's odometer reading at the end of the rental period (an integer)

It will then process that customer information and display the results. At the end, the program should ask the user if he wants to process another request and it will keep asking until the user enter 0.

3. The program will compute the amount of money that the customer will be billed, based on the customer's classification code, number of days in the rental period, and number of miles driven. The program will recognize both upper case and lower case letters for the classification codes.

Code 'B' (budget)

base charge: $40.00 for each day

mileage charge: $0.25 for each mile driven

Code 'D' (daily)

base charge: $60.00 for each day

mileage charge: no charge if the average number of miles driven per day is 100 miles or less; otherwise, $0.25 for each mile driven above the 100 mile per day limit.

Code 'W' (weekly)

base charge: $190.00 for each week (or fraction of a week)

mileage charge: no charge if the average number of miles driven per week is 900 miles or less; $100.00 per week if the average number of miles driven per week exceeds 900 miles but does not exceed 1500 miles; otherwise, $200.00 per week plus $0.25 for each mile driven above the 1500 mile per week limit.

The amount billed to the customer is the sum of the base charge and the mileage charge.

4. The program will compute the number of miles driven by the customer during the rental period. The odometer readings are taken from an odometer which has six digits and records tenths of a mile.
5. For each customer, the program will display a summary with the following information:
6. 1. The customer's classification code
7. 2. The number of days the vehicle was rented
8. 3. The vehicle's odometer reading at the start of the rental period
9. 4. The vehicle's odometer reading at the end of the rental period
10. 5. The number of miles driven during the rental period
11. 6. The amount of money billed to the customer for the rental period

All output will be appropriately labeled and formatted. The number of miles driven will be rounded to one fractional digit. The amount of money billed will be displayed with a dollar sign and will be rounded to two fractional digits (for example, $125.99 or $43.87). Note that we do not have the ability yet to fine tune the output so if cents end in zero that final zero will not be

displayed—that is fine for this project. We provide a file strings.txt with the strings we used to make it easier for you to match our output.

6. The program will detect, report and recover from invalid classification codes. When an invalid classification code is detected, the program will display an error message and re-prompt until a correct classification code is entered.

Hint: use a while loop that will loop until a correct classification code is entered. Here is pseudo code of that loop:

Prompt for a value

While the value is not correct:

Print an error message

Prompt for a value

7. The program will assume that all other user inputs are valid and correct. That is, the program will not check the number of days or odometer readings for validity. However, as noted below you may encounter an ending odometer reading that is less than the beginning reading and you need to handle that correctly.

Assignment Notes

1. As stated above, the odometer's dial has six digits and records tenths of a mile. For example, if the beginning reading was 100003 and the ending reading was 100135, then the customer drove 13.2 miles during the rental period.
2. Since the odometer’s dial is fixed with only six digits, the reading at the end of the rental period may be less than the reading at the beginning of the billing period. For example, if the beginning reading was 999997 and the ending reading was 000005, then the customer drove 0.8 miles during the rental period. You need to handle that arithmetic correctly.

Test 1

Welcome to car rentals.

At the prompts, please enter the following:

Customer's classification code (a character: BDW)

Number of days the vehicle was rented (int)

Odometer reading at the start of the rental period (int)

Odometer reading at the end of the rental period (int)

Would you like to continue (Y/N)? N

Thank you for your loyalty.

Test 2

Welcome to car rentals.

At the prompts, please enter the following:

Customer's classification code (a character: BDW)

Number of days the vehicle was rented (int)

Odometer reading at the start of the rental period (int)

Odometer reading at the end of the rental period (int)

Would you like to continue (Y/N)? Y

Customer code (BDW): D

Number of days: 1

Odometer reading at the start: 100003

Odometer reading at the end:      100135

Customer summary:

classification code: D

rental period (days): 1

odometer reading at start: 100003

odometer reading at end:      100135

number of miles driven:    13.2

amount due: $ 60.0

Would you like to continue (Y/N)? Y

Customer code (BDW): D

Number of days: 4

Odometer reading at the start: 101010

Odometer reading at the end:      108200

Customer summary:

classification code: D

rental period (days): 4

odometer reading at start: 101010

odometer reading at end:      108200

number of miles driven:    719.0

amount due: $ 319.75

Would you like to continue (Y/N)? Y

Customer code (BDW): D

Number of days: 2

Odometer reading at the start: 002000

Odometer reading at the end:      004000

Customer summary:

classification code: D

rental period (days): 2

odometer reading at start: 2000

odometer reading at end:      4000

number of miles driven:    200.0

amount due: $ 120.0

Would you like to continue (Y/N)? Y

Customer code (BDW): B

Number of days: 3

Odometer reading at the start: 999997

Odometer reading at the end:      000005

Customer summary:

classification code: B

rental period (days): 3

odometer reading at start: 999997

odometer reading at end:      5

number of miles driven: 0.8

amount due: $ 120.2

Would you like to continue (Y/N)? N

Thank you for your loyalty.

Test 5

Welcome to car rentals.

At the prompts, please enter the following:

Customer's classification code (a character: BDW)

Number of days the vehicle was rented (int)

Odometer reading at the start of the rental period (int)

Odometer reading at the end of the rental period (int)

Would you like to continue (Y/N)? Y

Customer code (BDW): x

*** Invalid customer code. Try again. ***

Customer code (BDW): y

*** Invalid customer code. Try again. ***

A particular brand of tires claims that its deluxe tire averages at least 50,000 miles before it needs to be replaced. From past studies of this tire, the standard deviation is known to be 8,000. A survey of owners of that tire design is conducted. From the 28 tires surveyed, the mean lifespan was 46,500 miles with a standard deviation of 9,800 miles. Using alpha = 0.05, is the data highly inconsistent with the claim?

Find the 95% confidence interval for the true mean.

How much CO2 ir released (in pounds) per year of your normal driving? comment on the size of your answer. CO2 is a greenhouse gas) how cound you reduce "carbon footprint'.

- Assume gasoline is mostly octane

- how many miles do you drive per week or per month

- how many miles per year?

- Gas mileage of your car> (# miles per gallon of gas)

- stoichiometry of the reaction

1. The equation of the line with an x-intercept of 33 and a y-intercept of 44 can be written in the form y=mx+b where
the number m is:    
the number b is:    

Enter each answer as a reduced fraction (like 5/3, not 10/6) or as an integer (like 4 or -2).

2. You have filled your car with a full tank of gas, and could travel 485 miles. For every 17 miles you drive, you use 1 gallon of gass (17 miles per gallon).

Please write an equation in slope-intercept form to model this situation. Please use m for the the miles you've traveled, and g for the gallons of gas you use.    

Whenever you are asked to test a hypothesis, be sure to: (a) state the null and alternative hypotheses; (b) state the relevant sample statistic; (c) give the rejection region; (d) compute the test; (e) give your decision and a conclusion in English.

1. Assume that last year, licensed American drivers drove an average of 10,000 miles, with a standard deviation of 2,000 miles (these are population figures).  This year, the government campaigned to get people to save gas by driving less.  To test the effectiveness of the campaign, a study is conducted.  A sample of 100 drivers is drawn at random from the general population and the number of miles driven by each person is recorded.  On the average, these 100 drivers drove 11,000 miles.  Was the campaign effective?  Use alpha = .01.

Question 1
Sydney Tour Company purchased a van for $150,000. The company expected the van to be used for 10 years, or 200,000 miles, with an estimated residual value of $2,000 at the end of that time. Actual usage of the van for the first 3 years were as follows:
 Year 1: 5,000 miles
 Year 2: 10,000 miles
 Year 3: 12,000 miles
Required
a) Calculate the depreciation for the second year under each of the methods below
I. Straight-line
II. Units of production
b) Show how the asset of van would appear in the balance sheet prepared at the end of the second year if the straight-line method was used
c) What factors should be considered in the selection of a depreciation method?