Mathematics, 26.10.2021 04:00, queensnowflake32
Whooping cough (pertussis) is a highly contagious bacterial infection that was a major cause of childhood deaths before the development of vaccines. About 80%80% of unvaccinated children who are exposed to whooping cough will develop the infection, as opposed to only about 5%5% of vaccinated children.
A group of 2020 children at a nursery school is exposed to whooping cough by playing with an infected child.
(a) If all 2020 have been vaccinated, what is the mean number of new infections? (Enter your answer as a whole number.)
mean number of new infections =
(b) If none of the 2020 have been vaccinated, what is the mean number of new infections? (Enter your answer as a whole number.)
mean number of new infections =
(c) What is the probability that 1818 or more of the 2020 children develop infections? (Enter your answer rounded to four decimal places.)
Answers: 1
Other questions on the subject: Mathematics
Mathematics, 21.06.2019 22:00, bobk1433
Mrs. avila is buying a wallpaper border to go on all of her kitchen walls. she wants to buy 5 extra feet of wallpaper border than she needs to be sure she has enough. she buys 55.5 feet of the border. the store owner selling the border uses the width of mrs. avila's kitchen to determine that the length of her kitchen must be 14.5 feet.
Answers: 2
Mathematics, 22.06.2019 00:00, jetskiinbunny31
The statements below can be used to prove that the triangles are similar. ? △abc ~ △xyz by the sss similarity theorem. which mathematical statement is missing? ∠b ≅ ∠y ∠b ≅ ∠z
Answers: 2
Do you know the correct answer?
Whooping cough (pertussis) is a highly contagious bacterial infection that was a major cause of chil...
Questions in other subjects:
English, 12.02.2021 01:10
Mathematics, 12.02.2021 01:10
Mathematics, 12.02.2021 01:10
Mathematics, 12.02.2021 01:10
