Explain the relationship among cost, cost objective, cost accumulation, and cost allocation.

The U.S. Geological Survey compiled historical data about Old Faithful Geyser (Yellowstone National Park) from 1870 to 1987. Let x₁ be a random variable that represents the time interval (in minutes) between Old Faithful eruptions for the years 1948 to 1952. Based on 9520 observations, the sample mean interval was x₁ = 61.2 minutes. Let x₂ be a random variable that represents the time interval in minutes between Old Faithful eruptions for the years 1983 to 1987. Based on 25,340 observations, the sample mean time interval was x₂ = 71.2 minutes. Historical data suggest that σ₁ = 8.35 minutes and σ₂ = 12.41 minutes. Let μ₁ be the population mean of x₁ and let μ₂ be the population mean of x₂.

(a) Compute a 95% confidence interval for μ₁ – μ₂. (Use 2 decimal places.)

(b) Comment on the meaning of the confidence interval in the context of this problem. Does the interval consist of positive numbers only? negative numbers only? a mix of positive and negative numbers? Does it appear (at the 95% confidence level) that a change in the interval length between eruptions has occurred? Many geologic experts believe that the distribution of eruption times of Old Faithful changed after the major earthquake that occurred in 1959.

Because the interval contains only positive numbers, we can say that the interval length between eruptions has gotten shorter.

Because the interval contains both positive and negative numbers, we can not say that the interval length between eruptions has gotten longer.  

We can not make any conclusions using this confidence interval.

Because the interval contains only negative numbers, we can say that the interval length between eruptions has gotten longer.

The U.S. Geological Survey compiled historical data about Old Faithful Geyser (Yellowstone National Park) from 1870 to 1987. Let x₁ be a random variable that represents the time interval (in minutes) between Old Faithful eruptions for the years 1948 to 1952. Based on 9280 observations, the sample mean interval was x₁ = 62.0 minutes. Let x₂ be a random variable that represents the time interval in minutes between Old Faithful eruptions for the years 1983 to 1987. Based on 24,170 observations, the sample mean time interval was x₂ = 69.6 minutes. Historical data suggest that σ₁ = 8.35 minutes and σ₂ = 12.76 minutes. Let μ₁ be the population mean of x₁ and let μ₂ be the population mean of x₂.

(a) Compute a 99% confidence interval for μ₁ – μ₂. (Use 2 decimal places.)

(b) Comment on the meaning of the confidence interval in the context of this problem. Does the interval consist of positive numbers only? negative numbers only? a mix of positive and negative numbers? Does it appear (at the 99% confidence level) that a change in the interval length between eruptions has occurred? Many geologic experts believe that the distribution of eruption times of Old Faithful changed after the major earthquake that occurred in 1959.

Because the interval contains only positive numbers, we can say that the interval length between eruptions has gotten shorter.Because the interval contains both positive and negative numbers, we can not say that the interval length between eruptions has gotten longer.    We can not make any conclusions using this confidence interval.Because the interval contains only negative numbers, we can say that the interval length between eruptions has gotten longer.

Exercise 4

On January 1, 2017, Park Rapids Lumber Company issued $80 million in 20-year, 10% bonds payable. Interest is payable semiannually on June 30th and December 31st. Bond discounts and premiums are amortized straight-line at each interest payment date.

a. Record the journal entry when the bonds were issued on January 1, 2017, make the necessary the journal entry to record the payment of bond interest on June 30, 2017, under each of the following assumptions:

1. The bonds were issued at 98. Round your answers to the nearest dollar.

2. The bonds were issued at 101. Round your answers to the nearest dollar.

b. Compute the net bond liability at December 31, 2017, under assumptions 1 and 2 above. Round to the nearest dollar.

c. Under which of the above assumptions, 1 or 2 would the investor’s effective rate of interest be higher? Explain.

Exercise 5

Speed World Cycles sells high-performance motorcycles and Motocross racers. One of Speed World’s most popular models is the Kazomma 900 dirt bike. During the current year, Speed World purchased eight of these cycles at the following costs:

Purchase Date                               Units Purchased      Unit Cost   Total Cost

July 1                                                                 2                  $4,950          $9,900

July 22                                                              3                    5,000           15,000

August 3                                                  3                        5,100           15,300

                                                                  ------                         ------------

                                                                      8                                             $40,200

On July 28, Speed World sold four Kazomma 900 dirt bikes to the Vince Wilson racing team. The remaining four bikes remained in inventory at September 30, the end of Speed World’s fiscal year.

Assume that Speed World uses a perpetual inventory system.

a. Compute the cost of goods sold relating to the sale on July 28 and the ending inventory of Kazomma 900 dirt bikes at September 30, using the following cost flow assumptions:

1. Average cost

2. FIFO

3. LIFO

Show the number of units and the unit costs of each layer comprising the cost of goods sold and ending inventory.

b. Using the cost figures computed in part a. answer the following questions:

1. Which of the three cost flow assumptions will result in Speed World Cycles reporting the highest net income for the current year? Would this always be the case? Explain.

2. Which of the three cost flow assumptions will minimize the income taxes owed by Speed World Cycles for the year? Would you expect this usually to be the case? Explain.

3. May Speed World Cycles use the cost flow assumption that results in the highest net income for the current year in its financial statements, but use the cost flow assumption that minimizes taxable income for the current year in its income tax return? Explain.

The U.S. Geological Survey compiled historical data about Old Faithful Geyser (Yellowstone National Park) from 1870 to 1987. Let x₁ be a random variable that represents the time interval (in minutes) between Old Faithful eruptions for the years 1948 to 1952. Based on 9580 observations, the sample mean interval was x₁ = 61.8 minutes. Let x₂ be a random variable that represents the time interval in minutes between Old Faithful eruptions for the years 1983 to 1987. Based on 23,000 observations, the sample mean time interval was x₂ = 69.2 minutes. Historical data suggest that σ₁ = 8.49 minutes and σ₂ = 11.78 minutes. Let μ₁ be the population mean of x₁ and let μ₂ be the population mean of x₂.(a) Compute a 99% confidence interval for μ₁ – μ₂. (Use 2 decimal places.)

(b) Comment on the meaning of the confidence interval in the context of this problem. Does the interval consist of positive numbers only? negative numbers only? a mix of positive and negative numbers? Does it appear (at the 99% confidence level) that a change in the interval length between eruptions has occurred? Many geologic experts believe that the distribution of eruption times of Old Faithful changed after the major earthquake that occurred in 1959.

Because the interval contains only positive numbers, we can say that the interval length between eruptions has gotten shorter.Because the interval contains both positive and negative numbers, we can not say that the interval length between eruptions has gotten longer.     We can not make any conclusions using this confidence interval.Because the interval contains only negative numbers, we can say that the interval length between eruptions has gotten longer.

Organism 3

Field Notes: Specimen collected from shaded area along stream in South Cumberland State Park (Grundy County, TN)
Laboratory Analysis:
Body: Large leaves emerging from underground rhizome
Size: 63cm

Chromosomal Analysis: Plant body is diploid --chromosomes number of 44

Lignin test: Positive

Cuticle: Present

Leaves: Present -- large with branched veins. Underside has sori(containing haploid spores)
Roots: Present-----branch from the inside
Stem:Present--- vascular tissue(xylem and phloem)present



Life History: Diploid sporophyte dominant generation. Haploid spores germinate into heart-shaped, haploid, gametophyte. Water required for fertilization due to flagellated sperm; no seed is produced. Diploid zygote develops into sporophyte of life ---each bearing ether megasporangia or microsporangia but not both. Insects, especially beetles, appear important in pollination   

Question: Explain which domain, kingdom and phylum you believe this plant should be classified in.

Communication: The local media features the work of your team on their nightly news. During a live interview the reporter asks you " Apparently this plant requires water for fertilization, can you explain, can you explain why"?

Response: ------------------------

HR Industries (HRI) has a beta of 1.4, while LR Industries's (LRI) beta is 0.8. The risk-free rate is 6%, and the required rate of return on an average stock is 13%. The expected rate of inflation built into rRF falls by 1.5 percentage points; the real risk-free rate remains constant; the required return on the market falls to 10.5%; and all betas remain constant. After all of these changes, what will be the difference in the required returns for HRI and LRI? Round your answer to two decimal places.

Covert a Hexadecimal to decimal (there is a video for you to watch too). Then write a program that can convert a binary to decimal (only for integer case).

There are two ways to do so.

Easy way: Directly use Java built-in method to do this. In this case, only couple lines of code. Hint: Study Integer class in Java.

Hard way: Write your own code to convert a binary to decimal from scratch. The input is a binary string. The program output is its corresponding decimal value. This way you need to design the algorithm.

Ch.11- 2.   Read the article on DNA origami article ( DNA Origami: The Art of Folding DNA Barbara Sacc* and Christof M. Niemeyer)

Answer each of these questions using 100-150 words

                  A. What is DNA origami? What has it been used for?

                  B. What are “staple strands” and how are they used?

                  C. How can lattices be built in three dimensions?

D. Do a citation index search of publications that reference this paper. What is the most recent citation that uses DNA origami for building novel structures?