Consider a portfolio with the following weights w,  expected return on each risky asset ER, and covariance matrix Cov below. w = np.array() ER = np.array()Cov = np.cov(, ]) Which of the following expressions represents the portfolio variance in Python?

Consider the code below num_epochs = 500 batch = 100 # Construct hidden layers inputs = tf.keras.layers.Dense(units=16, activation=’relu’, input_shape=]) hidden = tf.keras.layers.Dense(units=16, activation=’relu’) outputs = tf.keras.layers.Dense(units=1) # Stack the layers model = tf.keras.Sequential() # Loss function and optimizer(with learning rate) loss = ‘mse’ optimizer = tf.keras.optimizers.Adam(0.001) # Compile the model model.compile(loss=loss, optimizer=optimizer, metrics=) # Train the model history = model.fit(x_train_normalized, y_train_normalized, epochs=num_epochs, batch_size=batch, validation_split=0.1, verbose=0)After running the code above, how do you pick the new number of epochs to train your model one last time in the whole dataset?

Consider an economy with three possible states: bad, normal, and good. The probability of each state is given in the array of probabilities “p”  below. The payoff of a risky stock in each state is given in the array R.  p = np.array() R = np.array(, , ]) If we want to compute the expected return on this risky asset, what is the command line we should execute in Python?

Consider the code below with numbered lines:1)def h(x): 2) return np.exp(-x**2 / 2) / np.sqrt(2 * np.pi) 3) 4)x = np.linspace(-4, 4, 51) 5)y = np.zeros_like(x) 6) 7)for i in range(len(y)-1): 8) y = h(x) 9)plt.plot(x, y) If we run the code above, we will receive an error. In which line lies the error?

In an ML classification problem, before training the model for the last time,  we select the number of epochs that 

Which of the following is the relationship within sentence 15?

This problem consists of four parts and is worth 30 points.  In the figure below, the right-angle pipe OAB is shown. A 750-N tensile force is exerted by the cable on point B. 

What animal did the lawyer shoot?

A general formula for a SFA is R-COOH and the R- equals -CnH2n+1. Now we have nervonic acid (C23H45COOH). Please tell me that this is a/an __________________. 

Polysaccharides are hydrolyzed to disaccharides by enzymes known as: