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"What if the number of debilitating network viruses detected in a day at the firewalls of an Internet service provider within a certain geographic region is fueling a possible management decision to upgrade the detection system. The decision will be made based on the results of the following data analysis. This mean number of network viruses detected in a day is 2.5. What is the probability that in any given day:
1) Zero network viruses will be detected?
2) Exactly one network virus will be detected?
3) Two or more network viruses will be detected?
4) Fewer than three network viruses will be detected?
Can you please explain and show me the work of how you came to the answers?"
Carry out F test for significance of straight line regression of Y on X and interpret your results.
Suppose that the population of heights of male college students is approximately normally distributed with mean m of 69.09 inches and standard deviation s of 4.71 inches.
A SRS of size 16 drawn from a Normally Distributed population has a mean of 30 and a standard deviation, s, of 5. With 95% confidence, what is the interval that captures the true mean of the population?
A local tire dealer wants to predict the number of tires sold each month. He believes that the number of tires sold is a linear function of the amount of money invested in advertising.
For a normal distribution, the probability of randomly selecting a z-score greater than z = -2.00 is p = .0228.
The average speed of greyhound dogs is about 18.8 meters per second. A particular greyhound breeder claims that her dogs are faster than the average greyhound. In a sample of 45 dogs, they ran, on average, 19.2 meters per second with a standard de..
The assembly time for a product is uniformly distributed between 6 to 10 minutes.
A random sample of 225 fathers from Littleton, yielded 97 who did not help with child care. Using a .05 level of significance test the claim that the proportion is at least 34%.
It is very difficult for small businesses to be successful. The Small business administration estimates that 20 percent will dissolve or go bankrupt within two years. A sample of 50 new businesses is selected. (show work) (a) What is the mean and ..
if 100 tires are randomly selected for shipment to an outlet, what is the probability that they are all good? should this outlet plan to deal with defective tires returned by consumers?
Perform a significance test to assess whether there is an association between mortality from cirrhosis of the liver and duration of employment in the group hired after 1945. Report a p-value.
The carpeting department supervisor claims that the average number of days between the receipt of a complaint and its resolution is 20 days or less.
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