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A certain ion X3+ contains 24 electrons and 32 neutrons. The chemical symbol and the mass number of this ion are:
Survey tests on leadership skills and self-concept were administered to student-leaders.
Both tests use a 10-point Likert Scale, with 10 indicating the highest scores for each test.
Scores for the student-leaders on the tests follow:
Student Code A B C D E F G H I J
Self-concept 9.5 9.2 6.3 4.1 5.4 8.3 7.8 6.8 5.6 7.1
Leadership Skill 9.2 8.8 7.3 3.4 6.0 7.8 8.8 7.0 6.5 8.3
a. Compute the correlation coefficient r.
b. Interpret the results in terms of (a) strength and (b) direction of correlation.
c. Find the regression line that will predict the leadership skill if the self-
concept score is known.
d. Predict the leadership skill of a student leader whose self-concept skill is
1.5.
a. r =
=
=
=
=
=
r =
b. There is a _____________________between the self-concept skill and leadership skill of the students.
x y xy x2 y2
9.5 9.2
9.2 8.8
6.3 7.3
4.1 3.4
5.4 6.0
8.3 7.8
7.8 8.8
6.8 7.0
5.6 6.5
7.1 8.3
"\\sum"= "\\sum"= "\\sum"= "\\sum"= "\\sum"=
c)
= a + bx a= ( "\\sum" y)("\\sum" x2) - ("\\sum" x)("\\sum" xy) / n("\\sum" x2) -"\\sum" x2
= = = a=
b= ("\\sum" xy) - ("\\sum" x) ("\\sum" y) / n("\\sum"x2 ) -("\\sum" x)2
d)= _____________
= ____________(1.5)_
= ____________
1. a) = 97.732 – 2.61x
= 97.732 – 2.61(0)
=
b) = 97.732 – 2.61x
= 97.732 – 2.61(10)
=
c) the graph
Hollow pattern using / and _ and | right angle triangle
Write a program that calculates the area of a triangle.
Base class name=shape and variables are base,height(protected)
Derived class name=Triangle and member function that returns the formula of triangle.
1. A certain company makes electrical cables having a mean strength of 40 kg/cm² and a standard deviation of 2 kg/cm². Assuming the strength follows a normal distribution,
a. What percentage of cables will have a strength exceeding 43 kg/cm²?
b. If strength is measured to the nearest kg/cm², what percentage of cables will have
strength exceeding 43 kg/cm²?
c. Illustrate the normal curve for a and b.
Problem Statement: Find the average of an array using for and for-each loop
Given a positive integers array find the average of the numbers in that array using for-each loop
This exercise contains a class named NumberAverage with the following methods:
+FindAverage(int[]) : String
- Should take positive integer array as input and return a String with the average calculated
- The average of the array should be calculated by using a for-each loop
- Should send error message if all value in array are not positive
- Should send error message if array is emptyAn ideal gas is placed in a 4L container at a temperature of 300K and a pressure of 6
atmospheres. The pressure is held constant while the volume of the gas is halved. What is the
new temperature of the gas?
A. 1200K
B. 600K
C. 300K
D. 150K
E. 75K
Write the balanced NET ionic equation for the reaction when Pb(NO₃)₂ and KI are mixed in aqueous solution. If no reaction occurs, simply write only NR.
#340153 on Dec 2023