1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Maurinko [17]
3 years ago
9

The amount of time needed for a certain machine to process a job is a random variable with mean EXi = 10 minutes and Var(Xi)=2 m

inutes2. The times needed for different jobs are independent from each other. Find the probability that the machine processes less than or equal to 40jobs in 7hours.
Mathematics
1 answer:
lana66690 [7]3 years ago
4 0

Answer:

0.98732

Step-by-step explanation:

Given that :

Mean = 10 minutes

Variance = 2 minutes

For less than equal 40 jobs

Mean (m) = 40 * 10 = 400 minutes

Variance = 2 * 40 = 80 minutes

Standard deviation (s) = √variance = √80

Converting hours to minutes

X = 60 * 7 = 420 minutes

P(X≤ 420) :

Z = (x - m) / s

P(X≤ 420) :

Z = (420 - 400) / √80

Z = 20 / √80 = 20 / 8.9442 = 2.236

P(Z ≤ 2.236) = 0.98732

You might be interested in
C) The phone case you want to buy is marked down 30%, and you have a 25% off
Nimfa-mama [501]

Answer: Yes, you can find the original price of the phone case. The phone case was $560

Step-by-step explanation:

42.00 divided by 25% is $168

$168 divided by 30% is $560

5 0
3 years ago
Read 2 more answers
Help me soon due by 11 it 10:40!!!
Talja [164]

Answer:

1/4 <u>divided by</u> 1/3

1/3 <u>divided into</u> 1/4

<u>How many</u> 1/3 <u>are in</u> 1/4

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Can someone please help me with b, d, and 9-13? I already drew a number line, thanks in advance! :)
inessss [21]
B)
\frac{3}{13}  = s
d)
\frac{5}{4}  = s
9) I'm not really sure how to answer it, but I guess like 2.1, 2.2, 2.5, etc.,

10)
{2}^{2}  = 4
{3}^{2}  = 9
so {5, 6, 7, 8} is the answer

11) for some reason it won't let me insert a picture but put place
\sqrt{4}
above 2, and then place
\sqrt{9}
above 3, and then place
\sqrt{7}
in between 2 and 3, but place it a little closer to three since
\sqrt{7}  = 2.65
12) place
\sqrt{5}
between 2 and three, but closer to two since
\sqrt{5}  = 2.24
and also
\sqrt{5}  <  \sqrt{7}
and for number 13) the square root of 144 is 12, and the square root of 169 is 13, so any numbers between 12 and 13 will work.


I hope this helped and if not, message me and ill try to explain!
8 0
3 years ago
What digit is in the ten thousands place 1.03098 show how you got this and I will mark brainiest
Luden [163]
The 0 is in the ten thousands
3 0
3 years ago
Someone please help with 9th question !!!!
meriva

LIMITS  \:  \: AND \:  \:  \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  DERIVATIVES


Heya !

Check the attachment.
Hope it helps you :)

5 0
3 years ago
Other questions:
  • You decide to make this recipe a week later, but this time you find out that you
    11·2 answers
  • For #1 we’re adding/subtracting/multi polynomials I need the answer for #1 its kind of shaded off
    14·1 answer
  • Algebra 2. Grade 11
    14·1 answer
  • What is the value of
    9·2 answers
  • PLZ ANSWER IF U KNOW THE ANSWER​
    11·1 answer
  • A gourmet pizza café sells three sizes of pizza: small, medium and large. To buy all three sizes, it costs a total of 46.95. If
    9·1 answer
  • Arnold's entire workout consisted of 10 minutes of warm up exercise, 25 minutes of lifting weights, and 15 minutes on the treadm
    15·2 answers
  • Based on the scatter plot, is there any positive, negative or no correlation? Explain
    14·1 answer
  • The product of two consecutive positive integers is 812. What is the value of the lesser integer?
    6·1 answer
  • How many solutions does the system of equations have?<br> y=-2x+3<br> y = x² - 6x +3
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!