Law enforcement officers want to know if the average driver is speeding (driving faster than the posted speed limit) on a local highway with a posted speed limit of 70 mph. To test this, they select a sample of 49 drivers and find a sample mean speed of 74 mph, with a standard deviation of 15 mph.    At 95% confidence, perform a 7-step hypothesis test of law enforcement’s question. [Show all 7 steps, but do not worry about inserting Greek letters, using the equation editor, etc.]    

Which amplifier’s output is a perfect replica of the input?

Explain in detail why a diode conducts in forward bias but not reverse bias. The more you write the more I will believe you know what you are talking about. (But leave time for the remaining questions)

//Write the outputs for all println statements. import java.util.*;class Main { public static void main(String[] args) { // Create a LinkedList which implements Queue interface Queue queue = new LinkedList(); queue.add(1); queue.add(2); queue.add(3); System.out.println(“Initial Queue: ” + queue); queue.poll(); System.out.println(“Queue after poll(): ” + queue); queue.add(6); System.out.println(queue); LinkedList linkedList = (LinkedList) queue; linkedList.removeLast(); System.out.println(queue); Integer front = queue.peek(); System.out.println(“Peeked front: ” + front); queue.remove(); System.out.println(“Final Queue: ” + queue); }}

Complete the code to implement a generic class . The class should only accept objects of types that extend a given class. You need to: Create a Generic Calculator class that can perform mathematical operations like addition and multiplication on different types of numeric values. The class should have the following features: The class should accept numbers of type T where T can be any type that extends Number (such as Integer, Double, Float).Implement two methods:add(): Adds two numbers of type T and returns the sum. Ensure that the method works for any type of Number.multiply(): Multiplies two numbers of type T and returns the product.Main Class: In the main method, create instances of GenericCalculator for different numeric types, such as Integer, Double, and Float.Use the calculator to add and multiply different values.   // Create a generic class that works for any subclass of Numberclass GenericCalculator { // Method to add two numbers of type T public double add( ___ a, __ b) { } // Method to multiply two numbers of type T public double multiply(__ a, __ b) { }} class Main { public static void main(String[] args) { // Create a GenericCalculator for Integer type and call its methods // Create a GenericCalculator for Double type and call its methods // Create a GenericCalculator for Float type and call its methods }}  

Explain why an amplifier’s input AND output impedance characteristics are important and what size is ideal for EACH. What would happen if these values were not ideal?  Also discuss a situation in which you would want matched impedances (that is, output impedance of the first stage equal to input impedance of the second).

Explain the advantages and disadvantages (if any) of having two emitter resistors—one bypassed and one unbypassed—in the swamped common-emitter amplifier circuit shown in the figure below. Be sure to discuss voltage gain, base impedance and stability as part of your answer.

Which diodes are forward biased in the circuit below given the indicated polarity at the secondary of the transformer. (Mark all that apply)

Describe what the importance of this circled number means on a diode data sheet. One or two sentences will do.

When is it recommended to take the Unit Pre-Tests for this course?