The probability that an individual is left-handed is 0.19. In a class of 90 students, what is the mean and standard deviation of the number of left-handed students? Round to the nearest hundredth when necessary.

Mean = 17.1

SD = 3.72

Step-by-step explanation:

FROM the question;

n = 0.19 and the probability of success is 0.19

Mean = np = 0.19 * 90 = 17.1

The standard deviation is as follows;

√np(1-p)

SD = √(17.1)(0.81)

SD = √13.851

SD = 3.72

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

answer: on graphs, the open and closed circles, or vertical asymptotes drawn as dashed lines us identify discontinuities.

as before, graphs and tables allow us to estimate at best.

when working with formulas, getting zero in the denominator indicates a point of discontinuity.

when working with piecewise-defined functions, check for discontinuities at the transition points where one piece ends and the next begins.

step-by-step explanation: