At Kirk's Audio Emporium, 10% of the customers buy an extended warranty for their items. For a randomly-chosen group of

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At Kirk's Audio Emporium, 10% of the customers buy an extended warranty for their items. For a randomly-chosen group of 60 customers, let the random variable X = the number of customers who buy an extended warranty a) Find P(X + 7). What does this number represent? b) Find PIX S6). What does this number represent? c) Find P(35X59). What does this number represent? d) Find u and PX * ). What do these numbers represent? a) What is the correct formula to use to find PIX - 7)? 53 60 P(X-7) - 1.10.10 (2) 9 10 (Simplify your answers.) PIX= 7)- which is the probability that exactly 7 of 60 customers purchase an extended warranty. (Do not round until the final answer. Then round to three decimal places as needed.) b) What is the correct method to use to find PIX S6)? OA. PIX S6) (PIX0) + PIX = 1)+ PIX+2)+...+PX - 5). P/X = 6)) OB. P(X56)-(PIX = 6)*P(x-7) • PIX8)+ P(X60))

c) What is the easiest method to use to find P(35 X 59)? A. P(3 sX s 9) = (PIX = 4)+ P(X = 5) + ... + P(X= 8)) B. P(35X s 9) = (P(X= 3) + P(X= 4)+ P(X=5) + ... + P(X = 9)) C. P(3 $X $ 9) = (P(X= 3) + P(X=9)) D. P(35X59) = (P(X= 4) + P(X = 5)+ ... + P(X=60)) P(35X59) = 0, which is the probability that (Round to three decimal places as needed.) exactly 3 or 9 of 100 customers purchase an extended warranty.

d) What is the correct formula to use to find u? O A. u=P(X=0) + P(X = 1) + P(X = 2) + P(X= 3) + ... +P(X=n)), where n is the number of Bernoulli trials OB. u=P(X = 1)+ P(X= 2) + P(X = 3) + ... + P(X = n)), where n is the number of Bernoulli trials OC. = np, where n is the number of Bernoulli trials and p is the probability of success of each trial OD. where n is the number of Bernoulli trials and p is the probability of success of each trial n = р u= 0.where p is the expected number of customers out of 60 who purchase an extended warranty. (Type an integer or a decimal.) What is the correct formula to use to find P(X = )?

UU. at least u of 100 1 = where n is the number of Be bability of success of each trial exactly w of 60 o purchase an extended warranty. u= 0, where is the . expected number (Type an integer or a decimal.) at least u of 60 What is the correct formula to use to find F exactly w of 100 0 (OD at most u of 100 P(X = ) = . (0.10) (0) 0 at most u of 60 (Type integers or decimals. Simplify yo PIX = y) = 0, which is the probability that at most of 100 customers buy an extended warranty. (Do not round until the final answer. Then round to three decimal places as needed.)

air items. For a randomly-chosen group of between 4 and 8 of 60 At Kirk's Audio Emporium, 10% of the custom X = the number of customers who buy an exte a) Find P(X= 7). What does this number repre b) Find P(X 56). What does this number repre c) Find P(3 SX 39). What does this number te d) Find u and P(X = -). What do these numbe exactly 3 or 9 of 60 between 4 and 8 of 100 between 3 and 9 of 60 between 3 and 9 of 100 O A. P(35X59) = (P(X= 4) + P(X= 5) + ... + B. P(35X 9) = (P(X = 3) + P(X= 4)+P() C. P(3 SXS9) = (P(X = 3) + P(X = 9)) D. P(3 SX S9) = (P(X +4)(X=5)+...+ exactly 3 or 9 of 100 exactly 3 or 9 of 100 customers purchase an extended warranty. P(35X59)=0 which is the probability that (Round to three decimal places as needed.) d) What is the correct formula to use to find u? O A. -=P(X=0) + P(X = 1)*P(X=2)+ P(X + 3) + ... + P(X n)), where n is the number of Bernoulli trials OB. 4 = P(X=1) + P(X = 2)+P(X = 3)+ ... + P(X = n)), where n is the number of Bernoulli trials O c. p=np, where n is the number of Bernoulli trials and p is the probability of success of each trial

anty for their items. For a randomly-chosen At Kirk's Audio Emporium, 10% of the custo X = the number of customers who buy an e a) Find P(X= 7). What does this number re b) Find PIX s 6). What does this number re c) Find P(3 SXS 9). What does this number d) Find u and P(X = -). What do these num at least 7 of 60 at most 7 of 60 exactly 7 of 100 a) What is the correct formula to use to find exactly 7 of 60 60 9 • (0.10)(). at most 7 of 100 P(X= 7) = 7 10 at least 7 of 100 (Simplify your answers.) PIX = 7)=, which is the probability that exactly 7 of 60 customers purchase an extended warranty. (Do not round until the final answer. Then round to three decimal places as needed.) b) What is the correct method to use to find P(X 56)? O A. P(X56) = (P(X = 0)+ P(X= 1)*P(X= 2) + ... + P(X = 5) + P(X = 6)) B. P(X 6) = (P(X=6) + P(X= 7) + P(X = 8) + ... + P(X=60))