# Question: Over the past year a university s computer system has been

Over the past year, a university’s computer system has been struck by a virus at an average rate of 0.4 viruses per week. The university’s information technology managers estimate that each time a virus occurs, it costs the university $1000 to remove the virus and repair the damages it has caused. Assuming a Poisson distribution, what is the probability that the university will have the good fortune of being virus-free during the upcoming week? During this same week, what is the expected amount of money that the university will have to spend for virus removal and repair?

**View Solution:**## Answer to relevant Questions

According to the Mortgage Bankers Association of America, the foreclosure rate on home mortgages in 2007 was 2%. Assuming that this rate is applicable to a community where 500 homes have mortgages, use the Poisson ...The Canada Urban Transit Association has reported that the average revenue per passenger trip during a given year was $1.55. If we assume a normal distribution and a standard deviation of σ = $0.20, what proportion of ...A continuous random variable, x, is normally distributed with a mean of $1000 and a standard deviation of $100. Convert each of the following x values into its corresponding z-score: a. x = $1000 b. x = $750 c. x = $1100 d. ...Using the standard normal table, determine a z value (to two decimal places) such that the a. Cumulative area to z is 0.70. b. Cumulative area to z is 0.10. c. Area between z and negative infinity is 0.54. d. Area between z ...It has been reported that households in the West spend an annual average of $6050 for groceries. Assume a normal distribution with a standard deviation of $1500. Source: David Stuckey and Sam Ward, “Home Cooked,” USA ...Post your question