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A teacher claims that the average of students enrolled in Statistics is 88. A sample of 25 Statistics students has an average of 86 and standard deviation of 4. Is there enough evidence to reject the teacher's claim?
a) formulate the null and alternative hypothesis
b) determine what test statistic to use
c) Calculate the test statistic value
1.give the coordinates of the foci , vertices and covertices of the ellipse wih equation x²/169 + y²/25 = 1 sketch the graph and include these points
2.find the equation in standard form of the ellipse whose foci are F1(-8,0) and F2 (8,0) such that for any point on it, the sum of its distances from the foci is 20.
3. An ellipse has vertices (-10,-4) and (6,-4) and covertices (-3,-9) and (-2,1). Find its standard equation and its foci.
What is the quantum number that describe the 4d orbital?
3) Write a C++ program to solve the following problems (Red colour texts are to indicate user inputs that can be changed)
A) Calculate the area of a circle by accepting the radius of the circle from the user (NB: Area of Circle = 2חr)
Out Put
What is the radius of the circle: 10
Area = 62.8
B) Calculate the factorial of any integer number input from the user (NB: 4! = 1 * 2 * 3 * 4 = 24)
Out Put
Enter an Integer Number: 4
4! = 24
C) Waliya Bank is giving 7% interest for customer deposit, write a C++ program which enables customers to predict their total balance if they deposit an amounts and keep it for some time
Out Put
Enter your Account Number: 2000342200267
Enter your Name: Abebe Kebede
Enter the amount: 1000
How long to keep it (number of month): 10
Dear Abebe Kebede
Acc: 2000342200267
After 10 Months you will get a total of 700 Birr Interest
Your Balance will be = 1700 Birr
In a magnetic field of 14x10^-4 T a 4.2x10^-6 C flows at a velocity of 4x10^6 m/s. The angle is
90 degrees. How strong is the magnetic force operating on the charge?
In the presence of a magnetic field with a strength of 6.0x10^-3T, a 36m long wire carries a
current of 11.0A. Determine the amount of the magnetic force acting on the wire. The angle of
the line is 45 degrees
Consider the following information P(A)=0.25 P(Bc)=0.40 and P(A and B)=0.08,Then P(A|B)is 0.2
write program to print the area of rectangle by creating class name 'Area' with the method of cumpute area which take the value of it is length and width as parameter and return area of rectangle length and width of rectangle area entered through keyboard
A rock is thrown horizontally from the top of a cliff 88m high , with a horizontal speed of 24m/s with what velocity does the rock hit and what is the direction of velocity
Write a program that would print the information (name, year of joining, salary,address) of three employees by creating a class named 'Employee'. The outputshould be as follows: Name Year of joining Address Robert 1994 64C-
