3. A researcher has 14 subjects taking part in an experiment. They will randomly assign 5 subjects to the first group, 5 to the second, and 4 to the third. How many ways are there to choose which participants are assigned to each group? Leave your answer in exponential or factorial form.

3. A researcher has 14 subjects taking part in an experiment. They will randomly assign 5 subjects to the first group, 5 to the second, and 4 to the third. How many ways are there to choose which participants are assigned to each group? Leave your answer in exponential or factorial form.

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Question

discrete math

3. A researcher has 14 subjects taking part in an experiment. They will randomly assign 5 subjects to the
first group, 5 to the second, and 4 to the third. How many ways are there to choose which participants are
assigned to each group? Leave your answer in exponential or factorial form.

Expert Solution

Step 1

Total subjects = 14

3 groups :

1: 5 subjects

2: 5 subjects

3: 4 subjects

No. of ways = ?

Step by step

Solved in 2 steps

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I need help with the part B-1 of this question
An instructor for a test preparation course claims that the course will improve the test scores of students. The table shows the critical reading scores for 14 students the first two times they took the test. Before taking the test for the second time, the students took the instructor's course to try to improve their critical reading test scores. At a = 0.01, is there enough evidence to support the instructor's claim? Complete parts (a) through (f). Student Score on first test Score on second test 450 698 674 448 489 630 496 543 636 558 643 407 374 493 10 11 12 13 14 D 444 635 616 409 545 605 516 395 561 471 632 387 337 461 1 2 3 4 7 8 9. (b) Find the critical value(s) and identify the rejection region(s). (Use a comma to separate answers as needed. Type an integer or a decimal, Round to three decimal places as needed.) Identify the rejection region(s). Choose the correct answer below. O A. t>3.012 O B. t 2.650 O C. t 3.012 Click to select your answer(s). 225 PM 12/17/2020