paulinahunl17
03.08.2021 •
Mathematics
In a large restaurant, an average of 3 out of every 5 customers ask for water with their meal. A random sample of 10 customers is selected. Find the probability that exactly 6 ask for water with their meal. Let X be the random variable that represents the number of these customers who ask for water.
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Ответ:
please mark me brainlist
Step-by-step explanation:
a) Let X be the random variable the number of customers asking for water.
X ~B(10,0.6)
= P(X = 6) =( 0.6)6 ( 0.4)4 10!/6 !*4!
= 0.2508
Y ~B(10,0.4)
= P(Y = 4)=( 0.6)6 ( 0.4)4 10!/6 !*4!
= 0.2508
Ответ:
x > -6
Step-by-step explanation:
X - 9 > -15
x > -6