A student group believes that less than 50% of students find their college experience extremely rewarding. They decide to test this hypothesis using a significance level of .05. They conduct a random sample of 100 students and 34 say they find their college experience extremely rewarding.
Based on the type of test this is (right, left, or two-tailed); determine the following for this problem.
4. Critical Value(s): _______________________
5. P-value Table A.3 _______________________ P-value Calculator:________________
P-value Table A.2 _______________
6: Can you reject? _______________________
7. Conclusion: Can we conclude or can we not conclude less than 50% of students find their college experience extremely rewarding? (write the conclusion in a sentence)
In: Math
Python - No libraries - No count() function allowed
You need to travel 100 miles via rental car. There are several cars on the lot to choose from, each with their own MPG (miles per gallon) rating. Some cars have a manual transmission, while others do not (they're automatic). The price for gas in the area is $3 per gallon. Cars that have a manual transmission get a 10% discount at the pump.
To streamline your selection, the car rental place can supply you with a dictionary that represents the cars on their lot. The keys of this dictionary are names of cars, and their values are another dictionary. The inner dictionary has a key for the MPG of this car, and a key for whether or not the car is manual.
Write a function called def cheapest(cars) that returns the name of the car that costs the least amount of money to travel 100 miles.
Here is an example (there could be more than just two cars):
cars_on_lot = {'Civic':{'mpg':40,'manual':True},'Volt':{'mpg':50,'manual':False}}
print(cheapest(cars_on_lot)) # Volt
The "Civic" gets 40 miles to the gallon and is a manual transmission. 100 miles in this car requires 2.5 gallons of gas. The manual transmission deduction is $0.75. Therefore, it costs $6.75 to travel 100 miles in this car.
The "Volt" gets 50 miles to the gallon but is not a manual transmission. 100 miles in this car requires 2 gallons of gas. There is no manual transmission deduction. Therefore, it costs $6 to travel 100 miles in this car.
Of these two options, the Volt is the cheapest car you can use to travel 100 miles.
In: Computer Science
Terri Vogel, an amateur motorcycle racer, averages 129.71 seconds per 2.5 mile lap (in a 7 lap race) with a standard deviation of 2.28 seconds . The distribution of her race times is normally distributed. We are interested in one of her randomly selected laps. (Source: log book of Terri Vogel)
In: Statistics and Probability
|
Participant |
Hours of Exercise |
Life Satisfaction |
|
1 |
3 |
1 |
|
2 |
14 |
2 |
|
3 |
14 |
4 |
|
4 |
14 |
4 |
|
5 |
3 |
10 |
|
6 |
5 |
5 |
|
7 |
10 |
3 |
|
8 |
11 |
4 |
|
9 |
8 |
8 |
|
10 |
7 |
4 |
|
11 |
6 |
9 |
|
12 |
11 |
5 |
|
13 |
6 |
4 |
|
14 |
11 |
10 |
|
15 |
8 |
4 |
|
16 |
15 |
7 |
|
17 |
8 |
4 |
|
18 |
8 |
5 |
|
19 |
10 |
4 |
|
20 |
5 |
4 |
In: Statistics and Probability
1. In Java, what does the last line mean? What does scan.nextLine(); mean?
import java.util.Scanner;
Scanner scan = new Scanner (System.in);
message = scan.nextLine();
2. Assuming that a Random object has been created called generator, what is the range of the result of each of the following expressions? Also, do each example using nextFloat()
•generator.nextInt(20)
•generator.nextInt(8) + 1
•generator.nextInt(100) – 50
In: Computer Science
Exercise A3-20
(Algorithmic)
Future Values of an Annuity
Use Future Value Tables or your calculator to complete the requirements below.
On December 31, 2020, you sign a contract to make annual deposits of $5,200 in an investment account that earns 10%. The first deposit is made on December 31, 2020.
Required:
1.
Calculate what the balance in this investment account will be just
after the seventh deposit has been made if interest is compounded
annually. Round your answer to the nearest cent, if rounding is
required.
$
2.
Determine how much interest will have been earned on this
investment account just after the seventh deposit has been made if
interest is compounded annually. Round your answer to the nearest
cent, if rounding is required.
$
Exercise A3-11
(Algorithmic)
Practice with Tables
Use Future Value Tables and Present Value Tables, or your calculator, to complete the requirements below.
Required:
Round your answers to the nearest cent, if rounding is required.
a.
Determine the future value of a single cash flow of $5,480 that
earns 7% interest compounded annually for 10 years.
$
b.
Determine the future value of an annual annuity of 10 cash flows of
$500 each that earns 7% compounded annually.
$
c.
Determine the present value of $5,480 to be received 10 years from
now, assuming that the interest (discount) rate is 7% per
year.
$
d.
Determine the present value of an annuity of $500 per year for 10
years for which the interest (discount) rate is 7% per year and the
first cash flow occurs one year from now.
$
Feedback
12)b. Determine the present value of an annuity of seven cash flows of $1,340 each (one at the end of each of the next 7 years) for which the interest (discount) rate is 8% per year.
In: Finance
The "headline" unemployment rate (U-3) does not include which of the following
discouraged workers | ||
other marginally attached workers | ||
those working part-time for economic reasons | ||
all of the above |
The demand for loanable funds is negatively related to the real interest rate because
higher real interest rates generate more saving | ||
higher real interest rates raise the cost of capital | ||
higher real interest rates are caused by monetary policy | ||
higher real interest rates lower the cost of capital |
QUESTION 37
For a closed economy, GDP is $11 trillion, consumption is $7 trillion, taxes are $2.5 trillion and the government runs a surplus of $1 trillion. What are private saving and national saving?
| a. | $2.5 trillion and $1.5 trillion, respectively | |
| b. | $2.5 trillion and $2.5 trillion, respectively | |
| c. | $1.5 trillion and $2.5 trillion, respectively | |
| d. | $1.5 trillion and $1.5 trillion, respectively |
Since the Great Recession, real interest rates have been at historically low levels. Which of the following is NOT a possible reason for the low rates?
baby boomers are a large share of the population and are at the life stage when their savings is high | ||
higher income inequality creates more savings because more wealthy households save more | ||
low productivity growth has lowered demand for investments | ||
increased internet access has created better information for consumers |
In: Economics
A merry-go-round with a a radius of R = 1.98 m and moment of inertia I = 193 kg-m2 is spinning with an initial angular speed of ω = 1.45 rad/s in the counter clockwise direection when viewed from above. A person with mass m = 67 kg and velocity v = 4.9 m/s runs on a path tangent to the merry-go-round. Once at the merry-go-round the person jumps on and holds on to the rim of the merry-go-round.
1) What is the magnitude of the initial angular momentum of the merry-go-round?
2) What is the magnitude of the angular momentum of the person 2 meters before she jumps on the merry-go-round?
3) What is the magnitude of the angular momentum of the person just before she jumps on to the merry-go-round?
4) What is the angular speed of the merry-go-round after the person jumps on?
5) Once the merry-go-round travels at this new angular speed, with what force does the person need to hold on?
6) Once the person gets half way around, they decide to simply let go of the merry-go-round to exit the ride.
What is the magnitude of the linear velocity of the person right as they leave the merry-go-round?
7) What is the angular speed of the merry-go-round after the person lets go?
PLEASE ANSWER CORRECTLY WILL GIVE A THUMBS UP
In: Physics
|
Scrappers Supplies tracks the number of units purchased and sold throughout each accounting period but applies its inventory costing method at the end of each period, as if it uses a periodic inventory system. Assume its accounting records provided the following information at the end of the annual accounting period, December 31. |
| Transactions | Units | Unit Cost | |||||||
| Beginning inventory, January 1 | 200 | $ | 38 | ||||||
| Transactions during the year: | |||||||||
| a. | Purchase on account, March 2 | 350 | 40 | ||||||
| b. | Cash sale, April 1 ($54 each) | (350 | ) | ||||||
| c. | Purchase on account, June 30 | 250 | 44 | ||||||
| d. | Cash sale, August 1 ($54 each) | (70 | ) | ||||||
|
TIP: Although the purchases and sales are listed in chronological order, Scrappers determines the cost of goods sold after all of the purchases have occurred. |
| Required: | |
| 1. |
Compute the cost of goods available for sale, cost of ending inventory, and cost of goods sold at December 31 under each of the following inventory costing methods: (Round "Cost per Unit" to 2 decimal places.) |
| a. | Last-in, first-out. |
| b. | Weighted average cost. |
| c. | First-in, first-out. |
| d. |
Specific identification, assuming that the April 1 sale was selected one-fifth from the beginning inventory and four-fifths from the purchase of March 2. Assume that the sale of August 1 was selected from the purchase of June 30. |
| 2-a. |
Of the four methods, which will result in the highest gross profit? |
||||||||
|
| 2-b. |
Of the four methods, which will result in the lowest income taxes? |
||||||||
|
In: Accounting
Upon graduating from college, your parents host a graduation party in celebration for you at their house.
50 of your friends attend along with several family members and neighbors. At the end of the party everyone is departing the house. As the last guests filter out the front door, you thank them for attending and close the door.
3 minutes later you hear a loud knock on the front door. You open the door and see that one of your trusted friends is standing there and is very upset. She tells you that after getting into her car she realized her $9,000 Rolex watch was missing. Immediately, you, your friend and your family members conduct a search of the house, front yard and your friend's pocketbook, coat pockets and vehicle to no avail - the watch cannot be located.
Questions:
1) Should you call the police?
2) Is this apparent loss covered by the parents' home owner's insurance?
3) If not, what insurance might cover this loss?
4) What should happen if your friend receives a replacement watch via an insurance claim then, 3 months later, your mother calls you to say she discovered the lost watch on the ground while pruning a front lawn plant?
In: Finance