Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Question: A hacker is trying to break into a password-protected website by randomly trying to guess the password. Let m be the number of possible passwords.
(a) Suppose for this part that the hacker makes random guesses (with equal probability), with replacement. Find the average number of guesses it will take until the hacker guesses the correct password (including the successful guess).
(b) Now suppose that the hacker guesses randomly, without replacement. Find the average number of guesses it will take until the hacker guesses the correct password (including the successful guess).
(c) Show that the answer to (a) is greater than the answer to (b) (except in the degenerate case m = 1), and explain why this makes sense intuitively.
(d) Now suppose that the website locks out any user after n incorrect password attempts, so the hacker can guess at most n times. Find the PMF of the number of guesses that the hacker makes, both for the case of sampling with replacement and for the case of sampling without replacement.
Show that it satisfies the required condition for being a probability distribution.
If two people are randomly selected, what is the probability both are allergic to pollen? What is the probability at least one is allergic to pollen?
In a random sample of 500 families owning sets in the town was found that 340 subscribed to ASTRO. Find a 95% confidence interval for actual proportion of families in this town who subscribe to ASTRO.
Nut problem: Manager claims 336g and a population standard deviation of 11g. We sample 64 bags and find
If the process is in control at the present values of its parameters, what proportion of the output will be nonconforming, assuming a normal distribution of the characteristic?
What is the expected number of Republicans who will win office in the coming election?
find probabilty that the average of those counts is more than 83.0 mosquitoes per square meter. Assume the variable is normally distributed.
Construct a 95% confidence interval for the mean monthly rent of all advertised one-bedroom apartments. A 95% confidence interval for the mean monthly rent is?
find the indicated quantities given that x is a normal random variable with a mean of 30 and a standard deviation of
Is there evidence to suggest a difference in the mean waiting times at the four body shops?
question the events x and y are mutually exclusive. suppose px .05 and py .02. what is the probability of either x or
When using a t test for dependent means, show the steps involved in calculating the estimated population variance based on scores in this sample:
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd