If x = 9, what is the value of 6(x - 2)?
2 answers:
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Answer:
(a)
(c)
Step-by-step explanation:
(a) To find verify the answer we need to multiplying the equation
Thus, this statement is true.
(b) To find verify the answer we need to multiplying the equation
Hence, the given statement is false.
(c) To find verify the answer we need to multiplying the equation
Hence, the given statement is true.
(d) To find verify the answer we need to multiplying the equation
Hence, the given statement is false.
Answer: d. np(1 - p).
Step-by-step explanation:
Let x be any binomial variable which represents the number of success such that , where n is the sample size or the total number of trials and p is the probability of getting success in each trial .
Then, the mean E(x) and the variance Var(x) for the binomial distribution is given by equation :
where n is the sample size or the total number of trials and p is the probability of getting success in each trial .
Therefore , the correct option is option d. np(1 - p) .