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Three (3) boxes X, Y and Z contains identical cellphone covers which are either red or blue in colour. The make-up of each box is as follows. Box Number of red covers Number of blue covers X 6 4 y 5 5 z 3 7Two(2) covers are selected in an experiment using the following rules: STAGE I • Pick a cover at random from Box X. STAGE II • If the cover picked in STAGE I is red, then the second cover is picked at random from Box Y. • If the cover picked in STAGE I is blue, then the second cover is picked at random from Box z. What is the probability that the 2 covers selected according to these rules are both red? A. 0.6 B. 0.55 C. 0.5 D. 0.3

Three (3) boxes X, Y and Z contains identical cellphone covers which are either red or blue in colour. The make-up of each box is as follows. Box Number of red covers Number of blue covers X 6 4 y 5 5 z 3 7Two(2) covers are selected in an experiment using the following rules: STAGE I • Pick a cover at random from Box X. STAGE II • If the cover picked in STAGE I is red, then the second cover is picked at random from Box Y. • If the cover picked in STAGE I is blue, then the second cover is picked at random from Box z. What is the probability that the 2 covers selected according to these rules are both red? A. 0.6 B. 0.55 C. 0.5 D. 0.3

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 13CYU
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Three (3) boxes X, Y and Z contains identical cellphone covers which are either red or blue in colour. The make-up of each box is as follows. Box Number of red covers Number of blue covers
X 6 4
y 5 5
z 3 7Two(2) covers are selected in an experiment using the following rules:
STAGE I
• Pick a cover at random from Box X.
STAGE II
• If the cover picked in STAGE I is red, then the second cover is picked at random from
Box Y.
• If the cover picked in STAGE I is blue, then the second cover is picked at random
from Box z.
What is the probability that the 2 covers selected according to these rules are both red?
A. 0.6
B. 0.55
C. 0.5
D. 0.3

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