1. What is RT-PCR?

2. What is quantitative or “real-time” PCR?

3. Why is there a need to reverse transcribe the viral genome? (what is the viral genome of SARScov-2)

4. Why is qRT-PCR the gold-standard for the detection of the SARS-Cov-2 virus? (compared to rapidtest kits)

1.) Consider the following values: 20, 10, 45, 23, 46, 75, 15. What value(s) will be at the root of the tree created by inserting these values in the order given to build a 2-3-4 Tree?

2.) Consider the following description of an undirected graph:

Set of Vertices = {0, 1, 2, 3}

Set of Edges = {(0, 1), (0, 2), (0, 3), (2, 3)}

What is true about this graph?

Section 3.3 Product and Quotient Rules and Higher-Order Derivatives

Find the derivative of the function

   g(s)=√s(s^2+8)
   g(x)=√x sin⁡x
   f(x)=x^2/(2√x+1)
   f(t)=cos⁡t/t^3
   y=sec⁡x/x
   f(x)=sin⁡x cos⁡x
   y=(2e^x)/(x^2+1)


Find equation of the tangent line to the graph of the function f(x)=(x+3)/(x-3) at the point (4, 7)
Find the equation of the tangent line to the graph of the function ??=24?3 at the point (1, 2).

-Compute the sample correlation coefficient between the price and the number of flash drives sold. Also, develop a least-squares estimated regression line.

Wage rate (dollars per hour) Labor supplied (millions of workers) Labor demanded (millions of workers)

11 7 1 10 6 2 9 5 3 8 4 4 7 3 5

What is the equilibrium wage rate in an unregulated market (no minimum wage)? 

1- What is the pH of a solution made by dissolving 3.26 grams of calcium fluoride in enough water to make 3.0×102 mL of solution? The Ka for HF is 6.8x10–4.

2- The Kb of dimethylamine [(CH3)2NH] is 5.90x10–4 at 25°C. Calculate the pH of a 0.0930 M solution of dimethylamine.

4 republicans, 8 democrats, and 5 independents are randomly rated in a row. What is the probability that

1. the first 5 seats are taken by the democrats?

2. none of the first 5 seats is taken by democrats?

3. the final 3 seats are taken by a republican, and an independent

4.all republicans are seated together

1. RRR Co. just paid a dividend of $1.15 per share. The dividend is expected to grow by 40% next year, 20% in both Years 2 & 3, 10% in Year 4, and then grow at a constant rate of 4% thereafter. The required rate of return is 8.5%. Compute the selling price of the stock.

Five samples of size 4 were taken from a process. Summary statistics are shown below:

Sample Range Mean

1 1.75 10.5

2 2.42 22.3

3 2.75 17.4

4 2.04 20.1

5 2.80 18.9

What is the lower control limit for a range chart?

The parking authority in downtown Halifax reported the following information for a sample of 270 customers on the number of hours cars are parked and the amount they are charged:

a-1. Convert the information on the number of hours parked to a probability distribution. (Round the final answers to 3 decimal places.)

a-2. Is this a discrete or a continuous probability distribution?

(Click to select)DiscreteContinuous

b-1. Find the mean and the standard deviation of the number of hours parked. (Round the final answers to 3 decimal places.)

Mean           

Standard deviation           

b-2. How would you answer the question, how long is a typical customer parked? (Round the final answer to 3 decimal places.)

The typical customer is parked for hours.

c. Find the mean and standard deviation of the amount charged. (Round the final answers to 2 decimal places.)

Mean           

Standard deviation