In October 2024
Search & Filtering
Calculate the initial concentration of Fluoroacetic acid in a solution that has the same pH as a 0.00865 M solution of HCl
2 ) How many ways can you listen to 3 songs from a CD that has 12 selections?
Determine the spontaneity of the dissociation of ammonium nitrate (NH4NO2), the compound used in
cold packs:
NH4NO3(s) NH4+(aq) + NO3−(aq)
ΔΗ° = 25.7 kJ/mol; AS = 0.108 kJ/K•mol
a. Calculate the AG for the reaction at 25°C.
b. Does the reaction lead to an increase or decrease in the disorder of the system?
c. Is the reaction spontaneous or nonspontaneous at 25°C?
List the members of these sets.
{ x | x is a real number such that x2 = 1}
Enter an integer to search in the array: 2
2 is found in the array
Enter a string to search in the array: bedazzled
bedazzled is found in the array
Write a program that has these overloaded search methods to do array searching:
boolean search(int[] arr, int searchKey) – searches an integer array given a search key value, returns true if searchKey is found, false if not.
Hint:
boolean found=false;
for(int i=0; i<arr.length; i++){
if( ){//compare the array element with the search key value
//action taken if found
}
}
//return something
boolean search(String[] arr, String searchKey) – searches an array of strings given a search key value, returns true if searchKey is found, false if not.
(read Comparing_Strings.doc)
In the main method, you can declare and initialize the two arrays with random values, for example:
int[] intArray={7,3,2,8,1,0,9};
String strArray={"Enchanted","Bedazzled","Divine","Delighted","Elegant"};
Use the methods in the program.
Married People In a specific year 53.7% of men in the United States were married and 50.3% of women were married. Random samples of 300 men and 300 women found that 178 men and 139 women were married (not necessarily to each other.) At the 0.05 level of significance can it be concluded that the proportion of men who were married is greater than the proportion of women who were married?
Suppose a population consists of the five measurements: 2, 6, 8, 0, and 1:
1. What is the mean and standard deviation of the population?
2. How many different samples of size n=2 can be drawn from the population? List them with their corresponding means.
Follow the step by step procedure.
a rectangle is inscribed under the curve y=2^-x with its base along the positive x-axis. Find the dimensions of the rectangle with the largest area
A population of a certain ethnic group is consisting of three numbers (3,4,5,6,7). if samples of size 2 will be taken without replacement, find..
a. population mean
b. population variance
c. population standard deviation
d. mean of the sampling distribution of the sample mean
e. variance of the sampling distribution of the sample mean
f. standard deviation of the sampling distribution of the sample mean
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#339914 on Dec 2023