The pressure ratio of a Brayton cycle with air operated regenerator is 8. The lowest and highest temperatures of the cycle are 310 K and 1150 K. The adiabatic efficiency of the compressor and turbine is 75% and 82%, respectively, and the efficiency of the regenerator is 65%. Show the cycle in the T-s diagram. Consider the variation of specific temperatures with temperature.

a) Calculate the temperature of the air at the turbine outlet,

b) Net work of the cycle,

c) Calculate the thermal efficiency of the cycle.

Explain in detail why stages 5 and 6 of Erikson’s (Identity vs Role Confusion and Intimacy vs Isolation ) eight stages of personality development may be the highest hurdles to jump in life. Think about your junior high and high school years and what’s to come in your post-high school years. Include physical, emotional, and cognitive aspects and explain how these all fit into Erikson’s stages 5 and 6.

When unexpected inflation is zero, the corresponding unemployment rate is not zero because:

A) the output gap is negative.

B) the output gap is positive.

C) structural unemployment and frictional unemployment are not zero.

D) cyclical unemployment is high and positive.

If an economy has an output gap of 0%, this means the economy is:

A) suffering from hyperinflation.

B) at its highest sustainable rate of production.

C) experiencing cyclical unemployment.

D) unsustainable in the long run.

The following income distribution data are for Brazil.

Brazil’s national income is about $350 billion. Assume that total national personal income is approximately equal to national income. (a) What is the approximate sum of incomes for everyone in the bottom 20%? (b) Bottom 40%?

I need the briefly outline for the topic:''There is no such thing as business ethics. There is only one kind to adhere to the highest standards''. (Marvin Bower).What do you think about this statement? Give your opinions in an academic way."

Must have the thesis statement in introduction

Please break down and give bullet for each main point as I wanna know what should i need to have and do in this academic essay

The three call options issued by Tesla Inc are listed below. Suppose that the current price of Tesla is $247.89.

Which option has the highest time value? Discuss the determinants of the time value based on the moneyness and time to expiration.

This is an abstract class to represent a weather sensor. Weather sensors
* report weather parameters to a weather station. Sensor readings are pulled by
* calling the method read. Each sensor has a fixed failure rate that switches
* the sensor state to damaged and needs to be fixed. A damaged sensor will
* throw an exception when trying to get its reading.
*
*/
public abstract class WSensor {
   /*
   * Your Task: Declare attributes to represent failure rate and damaged state.
   */
  
   /**
   * Initialize the sensor with the given failure rate.
   * @param failureRate
   */
   public WSensor(double failureRate) {
       /* Your Task */
   }

   /**
   * Reads the measurement from the sensor and accounts for the sensor failures. A
   * random number is utilized to simulate the probability of failures. Once the
   * probability is less than the failure rate the sensor state is switched to
   * damaged.
   *
   * @return the measurement of the sensor.
   * @throws SensorFailedException
   * if the sensor is damaged.
   */
   public final double read() throws SensorFailedException {
       /* Your Task */

       return get();
   }

   /**
   * Get the measurement of the sensor regardless of its state.
   *
   * @return the measurement of the sensor regardless of its state.
   */
   protected abstract double get();

   /**
   * Sets the measurement value of the sensor regardless of the state.
   *
   * @param value
   * the value of the measurement
   */
   public abstract void set(double value);

   /**
   * Fixes a damaged sensor
   */
   public final void fix() {
       /* Your Task */
   }

}

Determine whether the BEST, most common interpretation of the given statement is:

     TRUE - Select 1

     FALSE - Select 2

Question 1 options:

Question 2 (20 points)

On stat your assessment is based on: Final Exam 47% Learn based on‐line assessment 34% Assignments 19%

Consider three random variables X, Y and Z which respectively represent the exam, on‐line assessment total and assignment scores (out of 100%) of a randomly chosen student. Assume that X, Y and Z areindependent (this is clearly not true, but the answers may be a reasonable approximation).

Suppose that past experience suggests the following properties of these assessment items (each out of 100%): E(X) = 61, sd(X) = 20, E(Y) = 72, sd(Y) = 22 and E(Z) =65, sd(Z) = 24.

a) Find the distribution parameters, E(T) and Var(T), for the total mark, T, where:T = 0.47X+0.34Y+0.19Z.

b) Assume the on‐line assessment, exam and assignment scores are Normally distributed. If the pass mark is 50%, calculate the probability that a randomly selected student will pass.

c) Find the expected number of A+ grades (90% and above) to be awarded in July if there are 840 students on the course this semester.

d) If a random sample of 16 stat students is selected, what is the probability that their average grade is at least a B (that is, on average they get 70% or more in total)?

How are b, c and d answered using excel?

Allen's hummingbird (Selasphorus sasin) has been studied by zoologist Bill Alther.† Suppose a small group of 18 Allen's hummingbirds has been under study in Arizona. The average weight for these birds is x = 3.15 grams. Based on previous studies, we can assume that the weights of Allen's hummingbirds have a normal distribution, with σ = 0.20 gram.

(a)

Find an 80% confidence interval for the average weights of Allen's hummingbirds in the study region. What is the margin of error? (Round your answers to two decimal places.)

lower limitupper limitmargin of error

(b)

What conditions are necessary for your calculations? (Select all that apply.)

normal distribution of weightsn is largeσ is unknownuniform distribution of weightsσ is known

(c)

Interpret your results in the context of this problem.

We are 20% confident that the true average weight of Allen's hummingbirds falls within this interval.The probability that this interval contains the true average weight of Allen's hummingbirds is 0.80.     The probability that this interval contains the true average weight of Allen's hummingbirds is 0.20.We are 80% confident that the true average weight of Allen's hummingbirds falls within this interval.

(d)

Find the sample size necessary for an 80% confidence level with a maximal margin of error  E = 0.09 for the mean weights of the hummingbirds. (Round up to the nearest whole number.)

hummingbirds