Question

# There are 10 mechanical machines in the workshop. The chance of a broken device is 5%....

There are 10 mechanical machines in the workshop. The chance of a broken device is 5%.
a. Calculate the probability that there is no broken device.
b. What is the average number of broken machines?
c.Knowing that there is at least 1 broken device, calculate the probability that the number of broken machines is no more than 2.

a)

Let X denote the number of broken devices in the workshop. Then ​​​​​​

​​​​​​

Required probability =

b)

Let X denote the number of broken devices in the workshop. Then ​​​​​​

So, required average =

c)

Required probability =

#### Earn Coins

Coins can be redeemed for fabulous gifts.

##### Need Online Homework Help?

Most questions answered within 1 hours.

##### Active Questions
• Homework 7 The following are well-known car brands: Hyundai, Ferrari. Maserati, Mitsubishi, Subaru, Chrysler, Nissan, Jaguar,...
• The appraised values of three recently sold houses in the Columbus area are (in thousands of...
• A professor would like to conduct a regression analysis to determine whether a student’s final exam...
• What are the semantic differences between a for loop and a while loop? Can you convert...
• Confidence Interval for μ: You poll 25 students and record each student’s height. You find that...
• A very long, straight solenoid with a cross-sectional area of 1.91 cm2cm2 is wound with 93.2...