Research Scenario:You have a group of 25 people who have high cholesterol and do not do any form of exercise. You want to know if a person’s cholesterol statistically significantly decreases after running for 30 minutes four times per week. You implement a 3-month treatment that consists of running for 30 minutes four times per week. You measure 25 individuals’ cholesterol levels before and after the treatment.

Study the descriptive statistics and summary output tables below and answer the questions that follow.

Descriptive Statistics

t-test

Write your conclusion (step 4) and interpretation of the results (step 5) in full sentences. See lecture notes for examples

The confidence interval is not included in the summary output table. Without developing it, would it contain a zero or not? Explain.

1.)

Determine the pH during the titration of 22.7 mL of 0.316 M nitric acid by 0.111 M barium hydroxide at the following points:

(1) Before the addition of any barium hydroxide

(2) After the addition of 16.2 mL of barium hydroxide

(3) At the equivalence point

(4) After adding 41.8 mL of barium hydroxide

2.)

Determine the pH during the titration of 28.1 mL of 0.256 M perchloric acid by 0.139 M barium hydroxide at the following points:

(1) Before the addition of any barium hydroxide

(2) After the addition of 13.0 mL of barium hydroxide

(3) At the equivalence point

(4) After adding 31.6 mL of barium hydroxide

4.) A 19.0 mL sample of a 0.325 M aqueous hypochlorous acid solution is titrated with a 0.449 M aqueous sodium hydroxide solution. What is the pH at the start of the titration, before any sodium hydroxide has been added?

pH =

5.)What is the pH at the equivalence point in the titration of a 21.6 mL sample of a 0.439 M aqueous nitrous acid solution with a 0.406 M aqueous potassium hydroxide solution?

pH =

James, a resident of UK has sold and gifted the following assets during the tax year 2019/20: a) Sale of Main Residence: James purchased a house (main Residence) on 1 January 2002 for £40,000 and sold it on 31 December 2019 to his brother for £100,000, after completing the ownership of 216 months. The market value of the residence on the date of sale was £300,000. James purchased the house on 1/1/2002 and stayed in it till 31/12/2003 (24 months) and went abroad for employment purposes for another 60 months till 31/12/2008. While coming back to UK, he went to his Aunty’s house and stayed there for 12 months till 31/12/2009. Then he came back to house and stayed for 36 months till 31/12/2012. Then he left his house for employment purposes within UK for 84 months till 31/12/2019 and sold his house without visiting his house before the sale. b) Sale of Painting: James sold a painting which he purchased in 2016 for £8,000. He sold the same on 2 January 2020 for £3000 and at the time of sale he incurred selling expense of 10%. c) James sold his jewellery on 10 January 2020 for £8,000, the cost of it was £5,000 in 2015. d) Sale of Factory: James has been doing business from so many years, on 15 February 2020, he sold his factory for £120,000, which he used 75% for business purposes. The cost of the factory was £50,000. Immediately, he reinvested £140,000 in new factory, which he will use fully for business purposes. e) Gift of Shares: on 1 July 2019, James sold 1000 shares of Angle Ltd, an unquoted company to his brother for £25,000. The market value on the date of gift was £50,000. James has purchased the shares on 23 April 2013 for £19,000. f) The brought forward capital loss is £10,000, which is still to be adjusted.

You are required to: (i) Calculate Capital Gain for each of the above sale. Show the working and notes clearly. (ii) Calculate the Taxable Gain and Capital Gain Tax of James for the tax year 2019/20, after claiming available Relief wherever applicable. State the due date for payment of Capital Gain Tax for the tax year 2019/20. Assume that James has taxable income of 40,000 for the tax year 2019/20. Show all workings clearly. (Total 20 Marks)

 Respond to the following questions after careful reading of the poem "Stop All The Clocks" (Before you begin the exercise, write definitions for 'metaphor' and 'personification')

 1. What does the poet mean by "Stop All the Clocks"?

 2. What has happened to make the poet want the clocks stopped?

 3. What emotion/emotions does the poet appear to be experiencing?

 4. In which stanza do you observe a change in the tone of the poet? Why does his tone change?

 5. Why does the poet say in lines 21-22, "I was wrong"?

 6. (a) What 2 things does the poet want 'aeroplanes' to do?

 (b) Can "aeroplanes" do these things? To what 2 things is he comparing "aeroplanes"?

 (c) The first comparison is an example of

 (d) The second comparison is a

 7. (a) In the final stanza, the poet wishes that things in nature would "stop" also. What does he want to be done to each one?

 (b) Can anyone "Pack up the moon"? To what is he comparing the moon - and

 all the other things in this stanza?

 (c) Which figurative device has the poet used to create these comparisons?

 8. In short, what does the poet really want, and why?

Problem 1: The following accounts relate to Fly-By-Night Airlines. Prepare the 4 necessary closing entries.

Depreciation Expense                                       $330

Fees Earned                                                       23450

Fly-By-Night Drawing                                          6000

Insurance Expense                                                 300

Miscellaneous Expense                                         450

Rent Expense                                                         1600

Salary Expense                                                       1620

Supplies Expense                                                     850

Problem 2:

Indicate which of the following accounts of the ABC Co. should be closed (temporary or nominal accounts are closed)

Accounts Payable                                                                       Fees Earned

Accumulated Depreciation-Equipment                                  Land

Depreciation Expense-Equipment                                           Supplies

Equipment                                                                                    Supplies Expense

ABC, Capital                                                                                  Wages Expense

ABC, Drawing                                                                                Wages Payable

Remember: Balance Sheet accounts (real or permanent accounts) are not closed

Consider a pipe that is closed at one end. Sketch the standing wave pattern in each of the following situations; showing the regions of high and low air pressure variations (pressure antinodes and pressure nodes). Then formulate equations that relate the wavelength and frequency to the length of the pipe.

A. Tube with one end open ("closed tube"): fundamental

B. Tube with one end open ("closed tube"): first overture (3rd harmonic)

C. Find the ratio of the first overture and fundamental frequencies

D. Tube with both ends open ("open tube"): fundamental

E. Tube with both ends open ("open tube"): first overture (2nd harmonic)

F. Find the ratio between fundamental and first overture frequencies

50.00 mL of 0.15 c6h5cooh ( a weak monoprotic acid, Ka = 6.3x10^-5) is titrated with a 0.30 M KOH solution. Calculate pH at different points of titration:

1- before any added base 2- after 5.0 mL of base is added 3- after 12.5 mL of base is added 4- after 25.0 mL of base is added 5- after 3.0 mL of base is added

Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.140 M HClO(aq) with 0.140 M KOH(aq). The ionization constant for HClO is 4.0x10^-8. (a) before addition of any KOH (b) after addition of 25.0 mL of KOH (c) after addition of 35.0 mL of KOH (d) after addition of 50.0 mL of KOH (e) after addition of 60.0 mL of KOH

Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.220 M HClO(aq) with 0.220 M KOH(aq). The ionization constant for HClO is 4.0e-8.

(a) before addition of any KOH

(b) after addition of 25.0 mL of KOH

(c) after addition of 30.0 mL of KOH

(d) after addition of 50.0 mL of KOH

(e) after addition of 60.0 mL of KOH