Suppose the following data are product weights for the same items produced on two different production lines.

Test for a difference between the product weights for the two lines. Use α = 0.05.

State the null and alternative hypotheses.

H₀: The two populations of product weights are identical.
H_a: The two populations of product weights are not identical.H₀: Median for line 1 − Median for line 2 < 0
H_a: Median for line 1 − Median for line 2 = 0    H₀: The two populations of product weights are not identical.
H_a: The two populations of product weights are identical.H₀: Median for line 1 − Median for line 2 ≤ 0
H_a: Median for line 1 − Median for line 2 > 0H₀: Median for line 1 − Median for line 2 ≥ 0
H_a: Median for line 1 − Median for line 2 < 0

Find the value of the test statistic.

W =

Find the p-value. (Round your answer to four decimal places.)

p-value =

State your conclusion.

Reject H₀. There is not sufficient evidence to conclude that there is a significant difference between the product weights for the two lines.Reject H₀. There is sufficient evidence to conclude that there is a significant difference between the product weights for the two lines.    Do not reject H₀. There is sufficient evidence to conclude that there is a significant difference between the product weights for the two lines.Do not reject H₀. There is not sufficient evidence to conclude that there is a significant difference between the product weights for the two lines.

A student carrying out out a Spectrophotmetric dtermination of copper in Brass lab experiment was in a hurry to finish. The student decided to omit the filtering step of the procedure because the brass solution did not appear very cloudy. It turned out that there was tin in the sample.

a) Did the omission of the filtering step cause a high or low result? Briefly explain.

b) Also during the filtering process some of the brass solution is absorbed by the filter paper. Would this cause a high or low result for percent copper? Briefly explain.

The November 30, 2017, unadjusted trial balance of Business Solutions is found in the Trial balance tab. Business Solutions had the following transactions and events in December 2017.
General journal, General ledger, Trial balance, Income statement, St Retained earnings, Balance sheet, Impact on Income

The following additional facts are collected for use in making adjusting entries prior to preparing financial statements for the company’s first three months:

1. The December 31 inventory count of computer supplies shows $580 still available.
2. Three months have expired since the 12-month insurance premium was paid in advance.
3. As of December 31, Lyn Addie has not been paid for four days of work at $125 per day.
4. The computer system, acquired on October 1, is expected to have a four-year life with no salvage value.
5. The office equipment, acquired on October 1, is expected to have a five-year life with no salvage value.
6. Three of the four months’ prepaid rent has expired.

A 3.60-kg block starts from rest at the top of a 30.0° incline and slides a distance of 2.30 m down the incline in 1.80 s.

(a) Find the magnitude of the acceleration of the block.

(b) Find the coefficient of kinetic friction between block and plane.

(c) Find the friction force acting on the block.

magnitude

direction

(d) Find the speed of the block after it has slid 2.30 m.

1. Assume that a Parent company acquires a 75% interest in its Subsidiary on January 1, 2016.  On the date of acquisition, the fair value of the 75% controlling interest was $1,800,000 and the fair value of the 25% noncontrolling interest was $600,000.  On January 1, 2016, the book value of net assets equaled $2,400,000 and the fair value of the identifiable net assets equaled the book value of identifiable net assets (i.e. there was no AAP or Goodwill). The parent uses the equity method to account for its investment in the subsidiary.

On December 31, 2017, the Subsidiary company issued $1,500,000 (face) 6 percent, five-year bonds to an unaffiliated company for $1,380,218 (i.e. the bonds had an effective yield of 8 percent).  The bonds pay interest annually on December 31, and the bond discount is amortized using the straight-line method.  This results in annual bond-payable discount amortization equal to $23,956 per year.

On December 31, 2019, the Parent paid $1,540,849 to purchase all of the outstanding Subsidiary company bonds (i.e. the bonds had an effective yield of 5 percent).  The bond premium is amortized using the straight-line method, which results in annual bond-investment premium amortization equal to $13,616 per year.

The Parent and the Subsidiary report the following financial statements for the year ended December 31, 2020:

Required:

Provide the consolidation entries and prepare a consolidation worksheet for the year ended December 31, 2018.

1-The lines observed in H-lamp are parts of Balmer Series. All these lines are due to a transition from various higher n value to a common n. What is this common lower n value for all these lines?

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Question 2

The bright violet line of Hg lamp has a wavelength of 435.8 nm. What is the energy of the photon associated with this emission line?

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Question 3

Given: In Atomic Spectra lab, a student obtained his best-fit line equation to be y = 0.29 x + 46.8 when he plotted his Vernier reading on the y-axis and wavelength in nm on the x-axis.

Question: If the Vernier reading for a line is 229.5, what is the predicted wavelength of this line in nm? (Keep 4 sig figs with one decimal place.)

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Question 4

The only electron in a hydrogen atom moved from n=2 to n=6. What is the wavelength of photon (in nm) being associated with this transition? Use whole numbers of nm without any decimal places, such as "415", "1125".

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Question 5

Which of the following transitions of the only electron in hydrogen atom will emit longest wavelength photon?

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Question 6

A student obtained the Rydberg constant to be 2.12*10-18 J. What is the % error of the measurement? Answer as percentage and keep one decimal place.

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Question 7

Which of the following orbitals of O has the lowest energy?choose all the right answer

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Question 8

A 100-mL sample of Pb initially has a concentration of 14.3 ppm. If this sample was diluted to 300 mL, what is the new concentration in ppm? Keep one decimal place for your answer.

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Question 9

Which of the following is directly proportional to the concentration of a solution sample?

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Question 10

When measuring the transmittance of the Fe standard solution, what is used as blank?

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Question 11

When intensity of light changes due to sample absorption, which of the following change accordingly?

This is a java assignment inspired by Caesar algorithm with some minor modifications. You are required to take in three inputs; a string, which is the message that you want to encrypt, an integer number that we call it salt, which is going to salt your plain message to help create a better encrypted message and an int to be used for displacement of the letters.

Your algorithm is going to encode the message letter by letter. If the position of the letter in your message is odd, then it should add the value of this letter to the displacement value plus salt. If the letter is in even position, then it should be added to the displacement subtracted from salt. For example, assume displacement = 3 and salt = 5, then letter ‘A’ will be replaced by ‘I’, if it is in odd position and by ‘C’ if it is in even position.

The message that you read can contain any character that is typeable (i.e. you can see the typable characters on your keyboard). Your program finally should output the encrypted message.

Sample input and corresponding output:

Input:

Let's meet somewhere cool. How about Tuesday at 9:30 in Chemistry 0400?

5

3

Output:

           Jmr/q(kmc|_{muc•fmpm_kmwj6_Pm•_i`ws|_\smql_?_ir(7B18_ql(Apcu
     g{rzw(.<.8=

JAVA JAVA

Throughout history, research in the physical sciences has often been limited by our abilitiesof safely observing and studying the very phenomenon in question. As we make technological progress, we have increasingly more tools to expand our observational capabilities. Write a three to five (3-5) page paper in which you: Part 1: Procedures in the Physical Sciences: Challenges in Measurements Identify three (3) specific challenges to making direct measurements in the fields of astronomy, chemistry, physics, or earth science. Describe how scientists have utilized indirect forms of measure to overcome these challenges. Choose two (2) of the most historically influential tools or techniques in the physical sciences. Explain how these techniques or tools work, and how they helped to advance our understanding of the physical sciences. Part 2: Procedures in the Physical Sciences: A Survey of Safety Choose one (1) hazard associated with research in the physical sciences. Discuss how protective gear or equipment might be used to mitigate the hazard, as well as its efficacy. Describe the ways in which advancements in the physical sciences might impact the safety of the global community. Assess any special considerations for regulating this research. Part 3: Documentation Use at least four (4) quality resources in this assignment. Note: Wikipedia and similar Websites do not qualify as quality resources. The body of the paper must have in-text citations that correspond to the references. Integrate all sources into your paper using proper techniques of quoting, paraphrasing and summarizing, along with proper use of in-text citations to credit your sources.

A converging lens (f = 11.7 cm) is located 26.6 cm to the left of a diverging lens (f = -5.42 cm). A postage stamp is placed 39.7 cm to the left of the converging lens. (a)Locate the final image of the stamp relative to the diverging lens. (b) Find the overall magnification.

A -10nC charge is located at (x, y) = (0.80cm , 0 cm).

What is the x-component of the electric field at the position (x, y) = (5.2cm , 0 cm)?

What is the y-component of the electric field at the position (x, y) = (5.2cm , 0 cm)?

What is the x-component of the electric field at the position (x, y) = (?5.2cm, 0 cm)?

What is the x-component of the electric field at the position (x, y) = (?5.2cm, 0 cm)?

What is the x-component of the electric field at the position (x, y) = (0 cm, 5.2cm )?

What is the y-component of the electric field at the position (x, y) = (0 cm, 5.2cm )?

250mL of water at 15.0 ?C is placed in the freezer compartment of a refrigerator with a coefficient of performance of 4.00. How much heat energy is exhausted into the room as the water is changed to ice at -20.0 ?C ?

To the right is a liposome - a hollow sphere made up of a lipid bilayer (like a cell) but without any membrane proteins. Of the listed molecules, which, if any, would you expect would be able to freely move (diffuse) across the membrane (based on their size and polarity)? Choose ALL that would cross.

a) chloride ion (small, polar)

b) fatty acid (medium, nonpolar)

c) glucose (medium, polar)

d) nitric oxide (small, nonpolar)

e) sodium ion (small, polar)

a) By how much does the model estimate the crime rate would change due to a 1% increase in the percentage of students receiving free lunch (assuming all other things are constant)? What about 2.5%?

b) By how much does the model estimate the crime rate would decrease due to a 1,000 person increase in the total population (assuming all other things are constant)?

c) By how much does the model estimate the crime rate would change due to a 5,000 person increase in the total population (assuming all other things are constant)?

d) Use the full model specified above to predict the crime rate for a Denver neighborhood with a total population of 7,000 and 18% of the student population receiving free lunch. (Enter your answer to three decimal places.)

Part C

Add the following reactions together:

ClO(g)+O3(g)ClO2(g)+O(g)??ClO2(g)+O2(g)ClO(g)+O2(g)

Identify which species are intermediates, which are catalysts, and which are only reagents or products.

Drag each item to the appropriate bin.

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