Dr. Zhivàgo Diagnostics Corp.'s income statement for 20X1 is as follows:
  

   
a. Compute the profit margin for 20X1. (Input the profit margin as a percent rounded to 2 decimal places.)
  

Profit margin _____%

b. Assume that in 20X2, sales increase by 10 percent and cost of goods sold increases by 20 percent. The firm is able to keep all other expenses the same. Assume a tax rate of 30 percent on income before taxes. What is income after taxes and the profit margin for 20X2? (Input the profit margin as a percent rounded to 2 decimal places.)

20X2

income after taxes____

profit margin ______%

Eight breasts of 7− to 8−week old broiler chickens weighing 0.9 to 1.2 kilograms were taken at random from a poultry-processing plant. The concentration of sarcoplasmic protein (mg N/g tissue) in the breast muscles of these specimens were measured before and after they were irradiate with 10 kGy. The data are presented below:

a) (7 points) At the 2.5 percent level, is there a significant decrease in the true mean sarcoplasmic protein after irradiation? State the assumption(s) required for the test.

b) (3 points) Construct a 95% confidence interval for the μdμd.

Suppose a rocket ship accelerates upwards with acceleration equal in magnitude to twice the magnitude of g (we say that the rocket ship accelerations upwards at 2g), but runs out of fuel after 100 seconds, after which point it stops accelerating upward. At this point, the rocket begins accelerating downwards with a magnitude of g. Assume that the gravitational pull of the Earth on the rocket doesn't change with altitude.

a)How high above the surface of the Earth does the rocket travel before it stops accelerating?

b) How fast is the rocket going when it stops accelerating?

c) How high does the rocket get before it begins to fall back to Earth?

d) How long after launch does the rocket strike the Earth again?

e) What is the average velocity of the rocket between when it leaves the Earth and when it strikes the Earth again?

Calculate pH for a strong acid/strong base titration.

Determine the pH during the titration of 39.8 mL of 0.334 M HI by 0.334 M KOH at the following points:

(a) Before the addition of any KOH-?

(b) After the addition of 19.9 mL of KOH-?

(c) At the equivalence point-?

(d) After adding 47.8 mL of KOH-?

Determine the pH during the titration of 34.6 mL of 0.350 M dimethylamine ((CH₃)₂NH , K_b = 5.9×10^-4) by 0.350M HCl at the following points.

(a) Before the addition of any HCl-?

(b) After the addition of 14.0 mL of HCl-?

(c) At the titration midpoint -?

(d) At the equivalence point -?

(e) After adding 50.5 mL of HCl-?

determine the pH at each stage: (a) before adding 0.50 M of NaOH to 25.0 mL of 0.45 M HCl (b) after adding 15.00 mL of NaOH to 25.00 mL of 0.45 M of HCl. (c) at the equivalent point (D) after adding 35.00 mL 0.50 M of NaOH to 25.00 mL of 0.45 M HCl

Calculate the pH for each case in the titration of 50.0 mL of 0.210 M HClO(aq) with 0.210 M KOH(aq). Use the ionization constant for HClO

What is the pH before addition of any KOH?

What is the ph after addition of 25 ML KOH,

after 40 ml, 50,Ml 60 ML KOH?

After reading the article "How Do Venture Capitalists Choose Investments?" posted on moodle and after reading chapter 7 'Analysis of VC Investments', summarize what are the key criteria a VC investor pays particular attention to before making a prudent investment decision. Any citation of real life data would be value adding!

Determine the pH during the titration of 35.8 mL of 0.233 M methylamine (CH3NH2 , Kb = 4.2×10-4) by 0.233 M HBr at the following points.

(a) Before the addition of any HBr

(b) After the addition of 13.7 mL of HBr

(c) At the titration midpoint

(d) At the equivalence point

(e) After adding 54.1 mL of HBr