2. Customers purchase a particular make of automobile with a variety of options. The probability mass function of the number of options selected is I 7 8 9 10 11 12 (2) 0.01 (x) 0.04 0.13 0.19 0.24 0.3 0.05 0.05 13 Consider customers that chose at most 9 options, which proportion of these cus- tomers chose 7 options? (A) 11.11% (B) 4% (C) 5.65% (D) 13% (E) 5%

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2. Customers purchase a particular make of automobile with a variety of options. The
probability mass function of the number of options selected is
x
7 8 9 10 11 12 13
f(x) 0.04 0.13 0.19 0.24 0.3 0.05 0.05
Consider customers that chose at most 9 options, which proportion of these cus-
tomers chose 7 options?
(A) 11.11%
(B) 4%
(C) 5.65%
(D) 13%
(E) 5%
Transcribed Image Text:2. Customers purchase a particular make of automobile with a variety of options. The probability mass function of the number of options selected is x 7 8 9 10 11 12 13 f(x) 0.04 0.13 0.19 0.24 0.3 0.05 0.05 Consider customers that chose at most 9 options, which proportion of these cus- tomers chose 7 options? (A) 11.11% (B) 4% (C) 5.65% (D) 13% (E) 5%
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