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Observe the following code:
int nums[3] = {1, 2, 3};
std::cout << nums;
What will be output to the screen?
A: 1
B: 3
C: 123
D: A memory address
Provide the toString method so that when a Quiz object is printed it gives the following Output ID: //id of quiz here Topic ://The topic of the quiz here Total Marks :// marks Obtained Marks :// marks obtained here Percentage // the percentage of marks and the % symbol Also provide a separate Main class that reads the values for the instance variables and creates an instance of the Quiz class
Write a program which requests a number between 1 and 50 from the user. It must repeatedly ask the user for a number until a valid number is entered. After receiving a valid number, the program must display all the even numbers smaller than that number.
Problem 8:
A vertically downward force of magnitude 10 N is required to immerse a homogeneous object of weight 40 N completely in water. What is the density of the object?
Estimate the true mean GPA with 99% confidence.
- In a learning style study, 1200 respondents were asked if they can assimilate concepts while watching television. 568 said Yes. Find a 95% confidence interval for the population p (Explain your solutions):
a. What is α?
b. What are the confidence coefficients?
c. what are p and q?
d. The error E is approximately?
e. What are the lower and upper limits?
f. The true population proportion falls between?
(1) Let the joint distribution function of X1 and X2 be given by
f(x1, x2) = {
8x1x2, 0 < x1 < x2 < 1
0, elsewhere
find (i) E[X2|X1] (ii) Var[X2|X1]
Consider a scenario where a “Class A” network is divided into 3 subnets of fixed length. Design each subnet and find the IP Range and subnet mask of each subnet. (Choose any Class A address).
Estimate the true mean GPA with 99% confidence.
- In a gymnasium, a physical exercise has a mean length of 30 minutes with a standard deviation of 6 minutes. A PE major wants to estimate the true mean length of the exercise with maximum error pegged at 0.5 adopting the 95% confidence interval. How many respondents does he need? Explain how you arrived at your answer.
a 73 kg person expends 400 W when walking on a level treadmill at a speed of 7.2 km/h. When the treadmill is inclined without changing the speed, the person's expended power increases to 600 W. What is the angle of incline of the treadmill by assuming that all the increased output goes into overcoming the force of gravity.
• isWaterFreezing. This function should return the bool value true if the temperature stored in the temperature field is at or below the freezing point of water. Otherwise, the function should return false.
• isWaterBoiling. This function should return the bool value true if the temperature stored in the temperature field is at or above the boiling point of water. Otherwise, the function should return false.
Write a program that demonstrates the class. The program should ask the user to enter a temperature and then display a list of the substances that will freeze at that temperature and those that will boil at that temperature. For example, if the temperature is −20 the class should report that water will freeze and for 100 water will boil.
#339914 on Dec 2023