Solution Found!
The torque required to remove bolts in a steel plate is
Chapter 4, Problem 6E(choose chapter or problem)
PROBLEM 6E
The torque required to remove bolts in a steel plate is rated as very high, high, average, and low, and these occur about 30%, 40%, 20%, and 10% of the time, respectively. Suppose n = 25 bolts are rated; what is the probability of rating 7 very high, 8 high, 6 average, and 4 low? Assume independence of the 25 trials.
Questions & Answers
QUESTION:
PROBLEM 6E
The torque required to remove bolts in a steel plate is rated as very high, high, average, and low, and these occur about 30%, 40%, 20%, and 10% of the time, respectively. Suppose n = 25 bolts are rated; what is the probability of rating 7 very high, 8 high, 6 average, and 4 low? Assume independence of the 25 trials.
ANSWER:
Answer:
Step 1 of 1 :
Given the torque to remove bolts in steel plate is
Very high is 30%,high is 40%,average is 20% and low is 10%.
Then n=25 bolts are rated.
Our goal is to find
What is the probability of rating 7 very high,8 high,6 average and 4 low.
Now we have to find the probability of rating 7 very high,8 high,6 average and 4 low.
Let is the high = 8
Let is the average = 6
Let is the low = 4 and
n is 25 bolts.
Here Very high is 30% = 30/100
Very high is 0.30
High is 40% = 40/100
High is 0.40