A study has 13 participants. How many possible ways to choose 7 of them into a group?
A study has 13 participants. How many possible ways to choose 7 of them into a...
) Your band has just recorded 11 songs and is now going to release 8 of them as an album. 3. (4 points How many possible ways are there to choose and order 8 (out of the 11 recorded) songs for the album? tion, your answer can be left in terms of factorials() but no combination or permution or Pp) is allowed. notation (i.e.
) Your band has just recorded 11 songs and is now going to release 8 of...
9. A study group is to be selected from a group of 16 students. The group consists of 5 freshmen, 7 sophomores, and 4 juniors. a) In how many ways can a group of 6 students be selected from this group? b) If the study group is to consist of 2 freshmen, 3 sophomores, and 1 junior, how many different groups are possible? c) What is the probability that a group of 6 students will consist of 2 freshmen, 3...
A contest of 10 girls has 3 winners. In how many ways can you choose 3 winners if; A. You select a first, second, and third place? B. You select a group of 3 winners?
Describe the type of study you would choose if you were unable to randomly assign study participants to a treatment group. Why did you choose this type of study design?
There are 24 books on a shelf. How many ways are there to choose 5 of them so that no two of the chosen books stand next to each other ?
(a) In how many ways can 7 people be lined up to get on a bus? (b) If 5 specific persons, among 7, insist on following each other, how many ways are possible? (c) If 2 specific persons, among 7, refuse to follow each other, how many ways are possible? (a) The 7 different people can be lined up in 5040 different ways. (b) The people can be lined up in different ways. (c) The people can be lined up...
There are 10 department members. 33) How many ways can you choose chair, associate chair, and programs head? (a)165 (b) 550 (c) 120 (d) 30 (e) 720 34) How many ways to choose 3 of them to be sent to a conference? (a)165 (b) 550 (c) 120 (d) 30 (e) 720
A class of 22 students, 7 are seniors and 15 are juniors. In how many ways can we choose a group of 6 people if. . . (a) three are to be selected from seniors and three from juniors? (b) at least three are to be selected from juniors? (c) Ashley (one of the 22 students) must be included in the group (with no additional requirements)? (d) 3 of the selected students must be assigned the jobs of writer, presenter,...
A nationwide study on reaction time is conducted on participants in two age groups. The participants in Group X are less than 40 years old. Their reaction times are normally distributed with mean 0.489 seconds and standard deviation of 0.07 seconds. a. A person is selected at random from Group X. Find the probability that their reaction time is greater than 0.65 seconds. The participants in Group Y are 40 years or older. Their reaction times are normally distributed b....