The number of defects per 1000 machine parts inspected are represented in the probability distribution below. Find the standard deviation of the probability distribution. Round final answer to three decimal places.Defects, xProbability, P(x)00.210.120.7

A card is selected from a standard deck of 52 playing cards. Find the probability that the card is an ace or a diamond. Leave answer as a reduced fraction.

In a jury selection pool, 45% of the people are female. Of these 45%, two out of five works in a health field. Find the probability that a randomly selected person from the jury pool is female and works in a health field.

In Portland, Oregon, about 39% of the days in a year are sunshiny. Find the standard deviation for the number of sunshiny days during the month of February.

In Portland, Oregon, about 39% of the days in a year are sunshiny. Find the variance for the number of sunshiny days during the month of February.

Twenty cyclists enter a race. How many ways can the cyclists finish first, second, and third?

In a survey of college students, 479 said that they have cheated on an exam and 1500 said that they have not cheated. If one student is selected at random, find the probability that the student has not cheated on an exam.

Determine whether “taking a driver’s course” and “passing the driver’s license exam” are independent or dependent events.

In a resting neuron, the charge on the outside of the membrane is negative.

In a representative democracy, government action results from the