Here are the returns on two stocks.
Digital Cheese Executive Fruit
January +14 +7
February −3 +1
March +5 +4
April +7 +12
May −4 +2
June +3 +7
July −2 −3
August −8 −2
Required: a-1. Calculate the variance and standard deviation of each stock. a-2. Which stock is riskier if held on its own? b. Now calculate the returns in each month of a portfolio that invests an equal amount each month in the two stocks. c. Is the variance more or less than halfway between the variance of the two individual stocks?
In: Finance
An online marathon fund raiser continues as long as donations keep coming in. The first hour costs $1.00, and then the cost per hour goes up by 8% every hour. Suppose the fundraiser lasts for 126 hours.
How much will be raised in the last hour? Enter your answer rounded to two decimal places.?
How much will be raised in total? Enter your answer rounded to two decimal places.?
In: Finance
true or false
7) A challenge with all of the data sources available today is that so much data is now available, it requires people with the knowledge to properly synthesize and analyze the correct data, or else the models produced will not properly answer the question trying to be asked. True: _____ False: _____
8) The Emergency Locator Transmitter activates and sends out a
pinging signal making it easier to find wreckage in the case of an
accident. However, there are still limitations in the technology as
the battery typically only is designed to last a few days at best.
True: _____ False: _____
9) Despite ICAO embracing a liberalization of skies, in Doc 9626, the organization still hesitates to promote the idea of a “flag of convenience” the same way they are used in the shipping and cruise industries “in order to ensure an orderly economic regulatory regime.” True: _____ False: _____
10) The FAA has lost the battle over control of Commercial Space policy because of the new creation of the United States Space Force. True: _____ False: _____
In: Operations Management
Problem 16-07
Cost of Trade Credit
Calculate the nominal annual cost of nonfree trade credit under each of the following terms. Assume that payment is made either on the due date or on the discount date. Assume 365 days in year for your calculations. Do not round intermediate calculations.
In: Finance
A manager wishes to determine whether the mean times
required to complete a certain task differ for two levels of
employee training. He randomly selected seven employees with each
of the two levels of training (Beginner and Advanced). Further, he
wants to know if the time (in minutes) is different for males and
females. The data is summarized in the table.
Employee
Male
Female
Male
Female
1
20.3
14.3
15.2
19.3
2
19.7
19.5
14.2
18.4
3
27.6
16.5
8.9
18.1
4
25.8
13.8
9.7
15.9
5
26.2
12.4
10.5
17.8
6
20.4
11.8
15.1
17.0
7
24.3
14.2
12.0
16.8
Total
164.3
102.5
85.6
123.3
Mean
23.47
14.64
12.22
17.61
GT
164.3+102.5+85.6+123.3=475.7
In: Math
A manager must make a decision on shipping. There are two
shippers, A and B. Both offer a two-day rate: A for $508 and B for
$533. In addition, A offers a three-day rate of $474 and a nine-day
rate of $410, and B offers a four-day rate of $451 and a seven-day
rate of $430. Annual holding costs are 31 percent of unit price.
Three hundred and thirty boxes are to be shipped, and each box has
a price of $152. Which shipping alternative would you recommend?
(Round your intermediate calculations to 3 decimal places
and final answers to 2 decimal places. Omit the "$" sign in your
response.)
| A | B | |||
| Option | Cost | Option | Cost | |
| 2 days | $ | 2 days | $ | |
| 3 days | $ | 4 days | $ | |
| 9 days | $ | 7 days | $ | |
In: Operations Management
1-3. The three common payroll taxes levied against employers
are:
1.
2.
3.
4.Of the two payroll taxes—federal income tax and federal
unemployment compensation tax—the one not subject to a ceiling on
the earnings subject to the tax is
5-7.A 180-day, 15% note for $175,000 dated March 10, payable to
Third Bank & Trust, is signed by Arthur Co.
5.The maturity date of the note is
6.The interest payable at the maturity date is
7.The maturity value of the note is
8-9.Assume that the note referred to in Question 5-7 was not
interest-bearing but was discounted at Third Bank & Trust at a
rate of 12%.
8.The amount of the discount is
9.The amount of the proceeds is
10.The detailed payroll record maintained for each employee is
called the
11.A pension plan in which the employer makes contributions but the
employee bears the investment risk is called a
12.The vacation pay expense for the current year is estimated at
$200,000. If two-thirds of the vacations were taken during the
current year and the remainder of the vacations will be taken in
future years, how much expense should be reported in the current
year?
In: Accounting
Data 2019
A study was conducted to test the impact of a reading intervention on kindergarten children’s acquisition of beginning reading skills. In order to gauge progress, a number of measures were used, including measures of the acquisition of sound equivalents of letters, letter names, concept of number, sight words, reading comprehension, etc. Letter naming has been found to be an effective proxy for overall development.
In this study, you are asked to analyze the results of the upper and lower case (52) letter naming assessment.
60 subjects were randomly assigned to two groups, an experimental group and a “waiting group” control. All subjects were assessed three times, prior to treatment (Oct. 15), after ten weeks, and after 20 weeks. The experimental group was enrolled in the intensive reading program for the first ten weeks, and then received no treatment for the next ten weeks. The “waiting group”, received no treatment for the first ten weeks, and then was enrolled in the intensive reading group for the next ten weeks. Three data points were thus gained.
The appropriate statistic to use in this example is a repeated measure (dependent sample) analysis of variance. However, neither the student version of SPSS, nor Excel, has a sufficiently sophisticated statistic to do a complete analysis. So for your project, find the means and standard deviations for the pre, mid, and post measures for each of the groups (a total of 6). If you had a repeated measure capability, you would then complete a post hoc analysis, probably using Tukey’s statistic. Since you don’t, I am asking you to draw what logical conclusions you can by simply looking at the means and noting differences, and then, accounting for history, development and other external and internal threats to validity, draw tentative conclusions.
Group 1
|
Subject |
Pre |
Mid |
Post |
|
1 |
4 |
12 |
10 |
|
2 |
15 |
34 |
52 |
|
3 |
8 |
35 |
44 |
|
4 |
2 |
26 |
44 |
|
5 |
10 |
44 |
39 |
|
6 |
12 |
44 |
45 |
|
7 |
12 |
26 |
35 |
|
8 |
2 |
10 |
5 |
|
9 |
6 |
22 |
27 |
|
10 |
29 |
52 |
52 |
|
11 |
3 |
18 |
26 |
|
12 |
5 |
26 |
33 |
|
13 |
0 |
12 |
6 |
|
14 |
6 |
16 |
29 |
|
15 |
3 |
21 |
29 |
|
16 |
18 |
39 |
44 |
In: Statistics and Probability
Download data.beergoggles.csv. The hypothesis is that after alcohol had been consumed, subjective perceptions of physical attractiveness would become more inaccurate (beer-goggles effect). There were 48 participants: 24 males, 24 females. The researcher took 3 groups of 8 participants to a night club. One group got no alcohol, one group 2 pints, and one group 4 pints. At the end of the evening the researcher took a photograph of the person the participant was chatting up. The attractiveness of the person on the photo was then rated (0 - 100) by independent judges. Use a 0.03 significance level and apply the methods of two-way analysis of variance. Was there an interaction between the two factors? What is your conclusion?
| Female | None | 65 |
| Female | None | 70 |
| Female | None | 60 |
| Female | None | 60 |
| Female | None | 60 |
| Female | None | 55 |
| Female | None | 60 |
| Female | None | 55 |
| Female | 2 Pints | 70 |
| Female | 2 Pints | 65 |
| Female | 2 Pints | 60 |
| Female | 2 Pints | 70 |
| Female | 2 Pints | 65 |
| Female | 2 Pints | 60 |
| Female | 2 Pints | 60 |
| Female | 2 Pints | 50 |
| Female | 4 Pints | 55 |
| Female | 4 Pints | 65 |
| Female | 4 Pints | 70 |
| Female | 4 Pints | 55 |
| Female | 4 Pints | 55 |
| Female | 4 Pints | 60 |
| Female | 4 Pints | 50 |
| Female | 4 Pints | 50 |
| Male | None | 50 |
| Male | None | 55 |
| Male | None | 80 |
| Male | None | 65 |
| Male | None | 70 |
| Male | None | 75 |
| Male | None | 75 |
| Male | None | 65 |
| Male | 2 Pints | 45 |
| Male | 2 Pints | 60 |
| Male | 2 Pints | 85 |
| Male | 2 Pints | 65 |
| Male | 2 Pints | 70 |
| Male | 2 Pints | 70 |
| Male | 2 Pints | 80 |
| Male | 2 Pints | 60 |
| Male | 4 Pints | 30 |
| Male | 4 Pints | 30 |
| Male | 4 Pints | 30 |
| Male | 4 Pints | 55 |
| Male | 4 Pints | 35 |
| Male | 4 Pints | 20 |
| Male | 4 Pints | 45 |
| Male | 4 Pints | 40 |
In: Statistics and Probability
Vincent operates a scenic tour business in Boston. He has one bus which can fit 50 people per tour and each tour lasts 2 hours. His total cost of operating one tour is fixed at $450. Vincent’s cost is not reduced if he runs a tour with a partially full bus. While his cost is the same for all tours, Vincent charges each passenger his/her willingness to pay: adults $18 per trip, children $10 per trip, and senior citizens $12 per trip. At those rates, on a typical day Vincent’s demand is:
|
Passenger Type |
Willingness to Pay |
Demand per day |
|
Adults |
$18 |
70 |
|
Children |
$10 |
25 |
|
Senior Citizens |
$12 |
55 |
Assume that Vincent’s customers are always available for the tour; therefore, he can fill his bus for each tour as long as there is sufficient total demand for the day.
1-Vincent uses a pricing practice called?
2- What is Vincent’s cost of serving all passengers demanding a tour on a typical day?
3-What is Vincent’s profit on a typical day?
4-One of Vincent’s friends tells him he would be more profitable if he charged a single price of $18. Assuming no changes in consumer demand, what would Vincent’s profit be if he charged everycustomer $18?
5- One of Vincent’s friends tells him he would be more profitable if he charged a single price of $12. Assuming no changes in consumer demand, what would Vincent’s profit be if he charged every customer $12?
In: Economics