雨中濃濃的山頭 2016-12-17 01:11 AM

1.Find the prob of taking more than 2 faulty bolts if 24 bolts are picked?

2.How many bolts should be picked to be more than 94.7% sure of taking at least 1 faulty bolt?

3.From 1 packet of 11 bolts,find the prob that not more than 3 are faulty.

4.From 1 packet of 36 bolts,find the prob that no.of faulty bolts is prime and<10.

5.From 2 packets of 21each,find the prob that both contains faulty bolts with a total of 4.

雲艾法比 2016-12-19 02:15 AM

1.binomial

2.probability of no faulty bolt is less than 1-0.947

3.binomial

4.no of faulty is 3 or 5 or 7

5.easy

2.probability of no faulty bolt is less than 1-0.947

3.binomial

4.no of faulty is 3 or 5 or 7

5.easy

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