Items are inspected for flaws by two quality inspectors. if a flaw is present, it will be detected by the first inspector with probability 0.9, and by the second inspector with probability 0.7. assume the inspectors function independently.
a. if an item has a flaw, what is the probability that it will be found by both inspectors?
b. if an item has a flaw, what is the probability that it will be found by at least one of the two inspectors?

0.63

0.97

Step-by-step explanation:

Given

Probability to detect the flaw by first inspector is 0.9

Probability to detect the flaw by second inspector is 0.7

(a)Probability that both inspector find the flaw

(b)Probability of finding flaw by at least one inspector is

P=1-Probability of not detecting the flaw by both inspectors

P=1-0.03=0.97

the correct answer is b) histograms can be used to exhibit the shape of distributions. this is because histograms count the frequency of each possible answer, so one is able to see which results are more common and which are less common.

add all the numbers and check the ones place.

the answer is 486. as the ones place is more than 4, the estimation will be the next 10 ie, 490