Consider the following statement: String greeting = “Hello, World!”; //note: there is a space after the camma int len = greeting.replace(“World”, “Dave”).length(); What is the value of the variable len?

What percent of the total area under the normal curve is above z = 1.22?  Round to one decimal place.

To compare two objects in a class to see whether they contains same values for all fields,

Consider the following three classes: public class A { private int number; protected String name; public double price; public A() {  … } private void foo1() { System.out.print(“A version of foo1() called.”); } protected int foo2() { System.out.print(“A version of foo2() called.”); return number; } public String foo3() { System.out.print(“A version of foo3() called.”); return “Hi!”; } }  //end class A   public class B extends A { private char service; public B() {  … } public void foo1() { System.out.print(“B version of foo1() called.”); } public int foo2() { int n = super.foo2(); System.out.print(“B version of foo2() called.”); return n + 5; } public String foo3() { String temp = super.foo3(); System.out.print(“A version of foo3() called.”); return temp + ” foo3.”; } }  //end class B   public class C extends B { public C() {  … } public void foo1() { System.out.print(“C version of foo1() called.”); } }  //end class C Answer the following questions: 1. The instance data members are inherited by B class from A class are [ans1]  and [ans2]. 2. The instance methods are inherited by B class from A class are [ans3] and [ans4].  (For the answers to the following questions, watch out space!) 3. What is the output of the following code sequence? B b1 = new B(); b1.foo1();  [ans5] 4. What is the output of the following code sequence? B b2 = new B(); int n = b2.foo2();  [ans6] 5. What is the output of the following code sequence? B b3 = new B(); System.out.print(b3.foo3());  [ans7] 6. What is the output of the following code sequence? C c1 = new C(); c1.foo1();  [ans8]

What percent of the total area under the normal curve is between z = 0.54 and z = 1.91? Round to one decimal place

Find Q1 from the data set below: 20, 25, 26, 26, 26, 27, 29, 33, 41, 43

Find the mean of the following data set: 54, 61, 59, 56, 55, 68 Round to two decimals

A bag contains 2 red marbles, 5 blue marbles, and 6 green marbles.  What is the probability that a randomly selected marble is blue?  Give answer in a reduced fraction.

If the ProductionWorker is a subclass of the Employee class, which feature of the object-oriented language is demonstrated by the following code?   Employee e;   ProductionWorker  p = new ProductionWorker();   e = p;

What is the purpose of the following algorithm, assuming s references a String? boolean valid = (s != null);int i = 0;char ch;while (valid && i < s.length()){     ch = s.charAt(i);   valid = Character.isLetterOrDigit(ch);   i++;}