3. (a) the number of components processed in one hour on a new m instances as follows: 74, 68, 79, 75. find the sample average, standard deviation and range of this data. (5 marks) e lifetime of a component (in thousands of hours) is a continuous random variable with density function: 0

296

Step-by-step explanation:

74+68+79+75

=142+79+75

=221+75

a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.