Costs 21.36 +1.17x=73

Mathematics

1 answer:

Ierofanga [76]4 years ago

8 0

Answer:

what are we actually solving for?....

anyways I had a suggestion ion know if it's right or wrong....

Isolate the variable by diving each side by factor that don't contain the variable.

Therefore x=7.2

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Step-by-step explanation:

Question assumed: Find the probability that the number x of correct answers is fewer than 4.

1) Previous concepts

The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".

2) Solution to the problem

Let X the random variable of interest, on this case we now that:

$X \sim Binom(n=7, p=0.25)$