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Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A pollster contacts 97 people in the 18-21 age bracket and finds that 82 of them respond and 15 refuse to respond. When 260 people in the 22-29 age bracket are contacted, 240 respond and 20 refuse to respond. Assume that 1 of the 357 people is randomly selected. Find the probability of getting someone in the 22-29 age bracket or someone who refused to respond.
Report the answer as a percent rounded to one decimal place accuracy. You need not enter the "%" symbol.
P(22-29 or refused) =
Calculate the equivalent weight in phosphoric acid in the reaction H3PO4 + 2NaOH ----> Na2HPO4 + 2 H2O
What mass of hydrogen peroxide must decompose to produce 65.88 g of H2O
Determine the truth value of each of the statement below if the domain consists of all real numbers.
∀x(2x > x)
The brakes of a car moving at 14 m/s are applied, and the car comes to a stop in 48 seconds. How far does the car go while it is slowing down from 14 to 10 m/s?
A.13.7 m
B.16.2 m
C.19.5 m
D.26.3 m
Examine the incomplete program below. Write code that can be placed below the comment (// Write your code here) to complete the program. Use nested loops to calculate the sums and averages of each row of scores stored in the 2-dimensional array: students so that when the program executes, the following output is displayed.
Average scores for students:
Student # 1: 12
Student # 2: 22
CODE:
#include <iostream>
using namespace std;
int main()
{
const int NUM_OF_STUDENTS = 2;
const int NUM_OF_TESTS = 3;
int sum = 0, average = 0;
double students[NUM_OF_STUDENTS][NUM_OF_TESTS] =
{
{11, 12, 13},
{21, 22, 23}
};
double averages[NUM_OF_STUDENTS] = {0, 0};
// Write your code here:
cout << "Average scores for students: " << endl;
for (int i = 0; i < NUM_OF_STUDENTS; i++)
cout << "Student # " << i + 1 << ": " << averages[i] << endl;
return 0;
}
Examine the incomplete program below. Write code that can be placed below the comment (// Write your code here) to complete the program. Use nested loops to calculate the sums and averages of each row of scores stored in the 2-dimensional array: students so that when the program executes, the following output is displayed.
OUTPUT:
Average scores for students:
Student # 1: 12
Student # 2: 22
CODE:
#include <iostream>
using namespace std;
int main()
{
const int NUM_OF_STUDENTS = 2;
const int NUM_OF_TESTS = 3;
int sum = 0, average = 0;
double students[NUM_OF_STUDENTS][NUM_OF_TESTS] =
{
{11, 12, 13},
{21, 22, 23}
};
double averages[NUM_OF_STUDENTS] = {0, 0};
// Write your code here:
cout << "Average scores for students: " << endl;
for (int i = 0; i < NUM_OF_STUDENTS; i++)
cout << "Student # " << i + 1 << ": " << averages[i] << endl;
return 0;
}
A man rides 10 km east and turns 12 km north. How far is he from the starting point?
A.10.36 km
B.12.86 km
C 14.25 km
D 15.62 km
Calculate the mass of a sample of CO2 with a volume of 0.575 at 50°C and 115 kPa
new york city typically has rain on about 16% of days in October what is the probability that it will rain on exactly 5 days in October and 15 days?
#339914 on Dec 2023