Test7B - Test 7B AP Statistics Name Directions Work on these sheets Part 1 Multiple Choice Circle the letter corresponding to the best answer A

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Test 7B AP Statistics Name: Directions: Work on these sheets. Part 1: Multiple Choice. Circle the letter corresponding to the best answer. A psychologist studied the number of puzzles subjects were able to solve in a five-minute period while listening to soothing music. Let X be the number of puzzles completed successfully by a subject. X had the following distribution: X 1 2 3 4 Probability 0.2 0.4 0.3 0.1 1. Using the above data, what is the probability that a randomly chosen subject completes at least 3 puzzles in the five-minute period while listening to soothing music? (a) 0.3 (b) 0.4 (c) 0.6 (d) 0.9 (e) The answer cannot be computed from the information given. 2. Using the above data, P(X < 3) is (a) 0.3 (b) 0.4 (c) 0.6 (d) 0.9 (e) The answer cannot be computed from the information given. 3. Using the above data, the mean µ of X is (a) 2.0 (b) 2.3 (c) 2.5 (d) 3.0 (e) The answer cannot be computed from the information given. 4.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 05/01/2011 for the course AP CLASSES 101 taught by Professor Mr.smith during the Spring '11 term at Korea Advanced Institute of Science and Technology.

Page1 / 4

Test7B - Test 7B AP Statistics Name Directions Work on these sheets Part 1 Multiple Choice Circle the letter corresponding to the best answer A

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online