Betsy is going purchase some stock. She is trying to choose between 7 tech stocks (one of which is Microsoft) and 12 industrial stocks (one of which is Bethlehem Steel). (a) If she randomly chooses a stock, what is the probability it will be a tech stock? (b) If she randomly chooses a stock, what is the probability it will be Microsoft? (c) If she decides to choose one of the tech stocks, what then is the conditional probability that it will be Microsoft? (d) If she decides to choose one of the industrial stocks, what is the probability it will be Bethlehem Steel?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.8: Probabilities Of Disjoint And Overlapping Events
Problem 2C
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Betsy is going to purchase some stock. She is trying to choose between 7 tech stocks (one of which is Microsoft) and 12 industrial stocks (one of which is Bethlehem Steel).
(a) If she randomly chooses a stock, what is the probability it will be a tech stock?
(b) If she randomly chooses a stock, what is the probability it will be Microsoft?
(c) If she decides to choose one of the tech stocks, what then is the conditional probability that it will be Microsoft?
(d) If she decides to choose one of the industrial stocks, what is the probability it will be Bethlehem Steel?
Transcribed Image Text:Betsy is going to purchase some stock. She is trying to choose between 7 tech stocks (one of which is Microsoft) and 12 industrial stocks (one of which is Bethlehem Steel). (a) If she randomly chooses a stock, what is the probability it will be a tech stock? (b) If she randomly chooses a stock, what is the probability it will be Microsoft? (c) If she decides to choose one of the tech stocks, what then is the conditional probability that it will be Microsoft? (d) If she decides to choose one of the industrial stocks, what is the probability it will be Bethlehem Steel?
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