What is the probability that a randomly selected American adult has never been tested? Show work. **using the data in the two total rows, this would be calculated as p(NT) /(p(NT) + p(T)), where p is probability

A hacker is trying to guess someone's password. The hacker knows (somehow) that the password is 5 digits long, and that each digit could be a number between 0 and 4. Assume that the hacker makes random guesses. What is the probability that the hacker guesses the password on her first try? Round to six decimal places. Probability =

Suppose a basketball player who makes a free throw shot with success 80%. Let X be the number of the successful shots among n = 5 shots. (a) What is the probability that a basketball player makes exactly 4 shots successfully, or, P (X = 4)? (b) W h a t i s P (X = 5)? (c) Calculate P (X < 4), that is, the probability that this player makes less than 4 successful shots.

For a particular disease, the probability that a patient passes away within the xth year is given by the following table:   x P(x) 0 0.039 1 0.034 2 0.337 3 0.291 4 0.25 5 0.023 6 0.026   This means that the probability that someone passes away within the first year is 0.039. The probability that they pass away after one year would be 0.034.  What is the mean number of years someone survives?  (round to two decimal places) What is the standard deviation for the number of years someone survives?  (round to two decimal places) The Range Rule of Thumb for survival would be:  years to  years. (Round each to two decimal places.) In your own words, interpret what the Range Rule of Thumb tells us about this disease. (If you don't remember what the Range Rule of Thumb is, review the heading "Unusual Values" in the Learning Activities.)

Step 7 (d) Compute u, the expected value of the number of fish caught per fisherman in a 6-hour period. Recall that the expected value is calculated using the formula u = xP(x), where x is the value of a random variable, P(x) is the probability of that variable, and the sum is taken for all values of the random variable. First determine xP(x), the product of x and P(x), for each value of x (let x = 4 for the value of "4 or more"). 1 3 4 or more P(x) 0.46 0.33 0.17 0.03 0.01 1(0.33) 0(0.46) ХP(x) = 0 Submit Skip (you cannot come back). Need Help? Read It Viewing Saved Work Revert to Last Response Submit Answer Submit Assignment Save Assignment Progress

Q35. Find the probability of success P for a binomial distribution, if n = 4 P(x-4) = P(x = 2) 6 and

Consider the following PMF function: P(X=x)=x/15 for x=1,2,3,4,5 What is the probability that X is odd?

ROUND TO FOUR DECIMAL PLACES

Solve c,d

T15 Suppose that 90% of drivers are "careful" and 10% are "reckless." Suppose further that a careful driver has a 0.2 probability of being in an accident in a given year, while for a reckless driver the probability is 0.4. What is the probability that a randomly selected driver will have an accident within a year? (Enter your answer to two decimal places.)