How much money do you save when you buy a $40 video game that is on sale for 25% off?

2 answers:

7 0

I’m not the best with percentages but I’m pretty sure it would be
$10
25% = 1 over 4= divided by 4
40 divided by 4 is 10
Sorry if it’s wrong I’m not very good at percentages lol

nexus9112 [7]3 years ago

4 0

I it is think it’s $10

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The number of hours between successive train arrivals at the station is uniformly distributed on (0, 1). Passengers arrive accor

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Answer:

The value of $E(X) =\frac{7}{2}$ .

The value of $Var (X)= \frac{91}{12}$ .

Step-by-step explanation:

Consider the provided information.

The number of hours between successive train arrivals at the station is uniformly distributed on (0, 1). Passengers arrive according to a Poisson process with rate 7 per hour.

Let X denote the number of people who get on the next train.

Part (A)

Here, X = N(T), N(t) ∼ Poisson(λt), and λ = 7

Therefore, E(N(T)|T) = λT

Now find E(X) as shown below

$E(X) = E(N(T))$