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Zielflug [23.3K]
3 years ago
7

Let X denote the lifetime of a machine component with an exponential distribution. The mean time for the component failure is 25

00 hours.
Required:
What is the probability that the lifetime exceeds the mean time by more than 1 standard deviations?
Mathematics
1 answer:
hammer [34]3 years ago
7 0

Answer:

15.8 % ???

at z = 1 p=.8413

I guess the question is asking 1-.8413 = 15.8 %

Step-by-step explanation:

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A paper bag contains a mixture of 3 types of candy. there are 10 packs of fuzzy peaches, 7 packs of sour keys, and 3 packs of ne
sweet-ann [11.9K]

The probability that the person will be able to keep a pack of fuzzy peaches will be 0.25.

<h3>How to calculate the probability?</h3>

a. Based on the information given, the probability that the person will be able to keep a pack of fuzzy peaches will be:

= 10/(10 + 7 + 3) × 10/(10 + 7 + 3)

= 10/20 × 10/20

= 1/4

= 0.25

The probability that the person will be able to keep a pack of fuzzy peaches will be 0.25.

b. The probability to be able to keep any of the candy will be:

= (10/20 × 10/20) + (7/20 × 7/20) + (3/20 × 3/20)

= 100/400 + 49/400 + 9/400

= 158/400

= 0.395

The probability to be able to keep any of the candy will be 0.395.

c. The probability that you will not be able to keep any of the candy will be:

= (10/20 × 10/20) + (7/20 × 13/20) + (3/20 × 17/20)

= 100/400 + 91/400 + 51/400

= 242/400

= 0.605

The probability that you will not be able to keep any of the candy will be 0.605.

Learn more about probability on:

brainly.com/question/24756209

#SPJ1

6 0
2 years ago
What is the scale factor of the geometric sequence? <br> 200,100,50,25
Alchen [17]

The scale factor is 1/2 or .5 because 200*.5=100 and 100*.5=50 and so on

7 0
3 years ago
Us
aleksandr82 [10.1K]

Answer:

x = 30

Step-by-step explanation:

Since this is a right triangle,

90 = (x + 20) + (x + 10)

90 = x + x + 20 + 10

90 = 2x + 30

90 - 30 = 2x

60 = 2x

60/2 = 2x/2

30 = x

Check:

x + 20

30 + 20 = 50

x + 10

30 + 10 = 40

50 + 40 = 90

Hope this helps!

4 0
3 years ago
PLEASE ANSWER!!!!!!
svetlana [45]
The correct answer is the last option (Option D), which is:

 D. Triangle

 A cone is figure with a surface of three dimensions. This solid has a vertex know as "apex". Therefore, if a <span>plane that is perpendicular to the base of a cone passes through the apex  or vertex of the cone, the shape that is formed by the intersection is a triangle.</span>
5 0
3 years ago
Read 2 more answers
Janelle purchased a used car for ​$14,500. She made a down payment of 18​% of the purchase price. How much was her down​ payment
Alecsey [184]

Answer:

the answer is 80

Step-by-step explanation:

because 14500/18% is 80

4 0
3 years ago
Read 2 more answers
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