Mathematics, 15.04.2020 22:24, joserodriguez212004
In a press release dated October 2, 2008, The National Cyber Security Alliance reported that approximately 80% of adult Americans who own a computer claim to have a firewall installed on their computer to prevent hackers from stealing personal information. This estimate was based on a survey of 3000 people. It was also reported that in a study of 400 computers, only about 40% actually had a firewall installed.
(a) Suppose that the true proportion of computer owners who have a firewall installed is 0.80. If 20 computer owners are selected at random, what is the probability that more than 16 have a firewall installed? (Round your answer to five decimal places.) Incorrect: Your answer is incorrect. .
(b) Suppose that the true proportion of computer owners who have a firewall installed is 0.40. If 20 computer owners are selected at random, what is the probability that more than 16 have a firewall installed? (Round your answer to five decimal places.)
(c) Suppose that a random sample of 20 computer owners is selected and that 17 have a firewall installed. What is the probability of this outcome if the true proportion of computer owners who have a firewall installed is 0.40? (Round your answer to five decimal places.) What is the probability of this outcome if the true proportion of computer owners who have a firewall installed is 0.80? (Round your answer to five decimal places.) Is it more likely that the true proportion of computer owners who have a firewall installed is 0.40 or 0.80? It's more likely that the true proportion is 0.80. It's more likely that the true proportion is 0.40.
Answers: 3
Mathematics, 21.06.2019 14:30, lizzie3545
Which quadratic function best fits this data? x y 1 32 2 78 3 178 4 326 5 390 6 337 a. y=11.41x2+154.42xβ143.9 b. y=β11.41x2+154.42xβ143.9 c. y=11.41x2+154.42x+143.9 d. y=β11.41x2+154.42x+143.9
Answers: 3
Mathematics, 21.06.2019 17:00, tifftiff22
The volume of a cube is 8 in to the 3rd power. how long is each side?
Answers: 1
Mathematics, 21.06.2019 19:20, SmolBeanPotato
Aefg - almn. find the ratio of aefg to almn. a)1: 4 b)1: 2 c)2.1 d)4: 1
Answers: 1
In a press release dated October 2, 2008, The National Cyber Security Alliance reported that approxi...
History, 24.08.2019 01:50
Mathematics, 24.08.2019 01:50
Social Studies, 24.08.2019 01:50