Lisa's School of Dance keeps a record of their students' ages and the dance classes they prefer taking. The results are shown below. Age Ballet Jazz Tap Total 3-6 25 20 20 65 7 -12 30 60 45 135 13 or older 45 50 30 125 Total 100 130 95 315 If one student is selected at random, find the probability that

Lisa's School of Dance keeps a record of their students' ages and the dance classes they prefer taking. The results are shown below. Age Ballet Jazz Tap Total 3-6 25 20 20 65 7 -12 30 60 45 135 13 or older 45 50 30 125 Total 100 130 95 315 If one student is selected at random, find the probability that

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

Lisa's School of Dance keeps a record of their students' ages and the dance classes they prefer taking. The results are shown below.

Age	Ballet	Jazz	Tap	Total
3-6	25	20	20	65
7 -12	30	60	45	135
13 or older	45	50	30	125
Total	100	130	95	315

If one student is selected at random, find the probability that

a) the student is 13 or older.

b) the student prefers taking jazz.

c) the student prefers taking tap, given the student is 3 - 6 years old.

d) the student is 7 - 12 years old, given the student prefers taking ballet.

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