Answer:
0.1665
Step-by-step explanation:
Given that on an average 1.4 are defective per 100 computer chips
If the tested lot contains more than three defects, the buyer will reject all the lots sent in that batch.
Let X be the no of defective items in 100 chips
X is Poisson with mean =1.4
i.e. the probability that the buyer will accept the lots
=
Answer is 0.1665
There were 340,000 cattle placed on feed
How many of the 340,000 cattle placed on feed were between 700 and 799 pounds?
Given the fraction of total cattle for 700 - 799 pounds is 2/5
Let x be the number of cattle between 700 - 799 pounds
We make a proportion using the fraction
Cross multiply it and solve for x
340000* 2 = 5x
680000 = 5x
Divide by 5 on both sides
So x= 136,000
There were 136,000 cattle between 700 and 799 pounds
Answer:
99% Confidence interval: (0.185,0.375)
Step-by-step explanation:
We are given the following in the question:
Sample size, n = 150
Number of cars that have faulty catalytic converters, x = 42
99% Confidence interval:
Putting the values, we get:
The 99% confidence interval for the true proportion of new cars with faulty catalytic converters is (0.185,0.375)
