Mathematics, 11.11.2020 02:00, amandasantiago2001

The communication monitoring company Attivio has reported that 91% of e-mail messages are spam. Suppose your inbox contains 25 messages. Assume messages arrive independently and at random. a) What are the mean and standard deviation of the number of real messages you should expect to find in your inbox?
b) What’s the probability that you’ll find only 1 or 2 real messages?

Answers: 2

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 13:00, JonJon05

Which of the following situations represents a linear relationship? a. theresa increases the distance she runs by 0.1 miles every week. b. the volume of a box depends on the length of box. c. the amount of money in a bank account increases by 1 percent each year. d. the population of a town doubles every 5 years.

Answers: 3

continue

Mathematics, 21.06.2019 15:30, logan12345677885675

The value √10 and √15 are plotted on the number line

Answers: 2

continue

Mathematics, 21.06.2019 18:30, weeblordd

Which number line represents the solution set for the inequality -1/2x> 24?

Answers: 2

continue

Mathematics, 21.06.2019 19:30, priscilaannmendez

We just started the introduction into circles and i have no idea how to do this.