Question:
If a sample of 2 hammer is selected
(a) find the probability that all in the sample are defective.
(b) find the probability that none in the sample are defective.
Answer:
a
b
Step-by-step explanation:
Given
--- hammers
--- selection
This will be treated as selection without replacement. So, 1 will be subtracted from subsequent probabilities
Solving (a): Probability that both selection are defective.
For two selections, the probability that all are defective is:
Solving (b): Probability that none are defective.
The probability that a selection is not defective is:
For two selections, the probability that all are not defective is:
Answer: 4
Step-by-step explanation:
Let's make a table.
So we know that for 24 minutes, Heather can ring up 36 customers. Now, to get 6 customers, you need to divide 36 by 6.
So
36 = 24
/ 6 /6
_______
6 = <u>4</u>
Answer:
1) Sunny
2) Rainy
Step-by-step explanation:
Answer:
Answer is A, A=3
Step-by-step explanation:
It's 2.5 bc it goes up by 2.5 everytime