Mathematics

Mathematics, 31.07.2019 15:00, mluz

There are 50 students in a class and the professor chooses 15 students at random. what is the probability that you or your friend joe are among the chosen students?

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Mathematics, 12.07.2019 13:30, angvtl02

Ms. francis needs 2 students to read a poem, so she assigns each student in her class of 28 students a number from 1 to 28 . she then chooses 2 student numbers at random. what is the probability that ms. francis chooses 2 even-numbered students?

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Mathematics, 10.09.2019 07:30, kiasiab17

in a university class that includes 120 students, mostly non-traditional, the mean age is 32, with a standard deviation 12 students, and with a normal distribution. six of these students are international students. 1. what is the probability that, if one student is picked at a random, he/she be a teenager (120 12 years old)? you need to (somewhat) critically think about this before tackling itll 2. what is the probability that if one student is selected at random, he/she will be an international student? 3. what is the probability that if one student is selected at random, his/her age be between 28 to 30 years old? 4. what is the probability that if on student is selected at random, his/her age be between 28 to 36 years old? 5. suppose we select, at random, a sample of 9 students from this class. what is the probability that the mean age of that sample will be more than 38 years old? show your marki

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Mathematics, 05.10.2019 00:10, carlos200411114

Suppose that a school band contains 10 students from the freshman class, 20 students from the sophomore class, 30 students from the junior class, and 40 students from the senior class. if 15 students are selected at random from the band, what is the probability that at least one student will be selected from each of the four classes? hint: first determine the probability that at least one of the four classes will not be represented in the selection.

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