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aev [14]
3 years ago
8

How to find the value of X

Mathematics
2 answers:
Mekhanik [1.2K]3 years ago
4 0
Where is the question
Alenkasestr [34]3 years ago
3 0
We need the question
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An airline is planning its staffing needs for the next year. If a new route is​ approved, it will hire 858 new employees. If a n
stealth61 [152]

Answer:

E(X) = \sum_{i=1}^n X_i P(X_i)

And from the problem we know the following:

P(X_1) = 0.34 , X_1 =858 represent the condition if the route is approved

P(X_2) = 1-0.34=0.66 , X_1 =157 represent the condition if the route is NOT approved

Then replacing in the formula for the expected value we got:

E(X) = 858*0.34 + 157*0.66 = 395.34

So then the expected number of new employees to be hired by the​ airline based on the conditions given is between 395 and 396.

Step-by-step explanation:

For this cae we can define the random variable X who represent the number of new employees to be hired by the​ airline and we can find the expected value with the following general formula:

E(X) = \sum_{i=1}^n X_i P(X_i)

And from the problem we know the following:

P(X_1) = 0.34 , X_1 =858 represent the condition if the route is approved

P(X_2) = 1-0.34=0.66 , X_1 =157 represent the condition if the route is NOT approved

Then replacing in the formula for the expected value we got:

E(X) = 858*0.34 + 157*0.66 = 395.34

So then the expected number of new employees to be hired by the​ airline based on the conditions given is between 395 and 396.

6 0
3 years ago
a survey mr thrones class shows that 5 out of 8 students will by lunch how many out of 720 students in the school will buy lunch
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5/8 that's how ratio of students that will buy lunch. so in order to find number students who will buy the lunch out of 720, just multiply 720 with 5/8 ie, 720x5/8 ie 450.

450 is answer

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For the first four months of the year , rain fell as follows : 2 1/2 inches , 3 1/4 inched , 1 1/8 inches and 1 1/2 inches . Wha
RSB [31]
8 3/8 would be the answer because first off you would have to find the 8th of the 1/2 and 1/4. Then after you get all of them then you would add them together which would be 8 3/8.
4 0
3 years ago
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