Ryan earns $20.16 working 3 hours. How Much Does he earn per hour?

2 answers:

8 0

So Ryan works for 3 hours and gets paid 20.16$ so to find how much he gets paid every hour you have to divide 20.16 by 3

20.16/3 is equal to 6.72
now to check your answer multiply 6.72 by 3 and if it's correct (which it is) you'll get 20.16

so basically the answer is C 6.72

Reika [66]3 years ago

5 0

C)$6.72
$20.16÷3=$6.72

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Ask Your Teacher Consider a binomial random variable with n = 5 and p = 0.8. Let x be the number of successes in the sample. Eva

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Answer:

0.942 is the required probability.

Step-by-step explanation:

We are given the following in the question:

x is a binomial random variable with n = 5 and p = 0.8.

Then,

$P(X=x) = \binom{n}{x}.p^x.(1-p)^{n-x}$

where n is the total number of observations, x is the number of success, p is the probability of success.

We have to evaluate:

$P(x \geq 3) = P(x = 3) + P(x = 4) +P(x=5)\\\\= \binom{5}{3}(0.8)^3(1-0.8)^2 +\binom{5}{4}(0.8)^4(1-0.8)^1 +\binom{5}{5}(0.8)^5(1-0.8)^0\\\\= 0.2048 +0.4096+0.3276=0.942$