Question

Question 8

1. Asking 1000 people which brand of cigarettes they smoke is a Binomial Experiment.

   	a.	True
   	b.	False

  

Question 9

1. Surveying 300 prisoners to see how many different crimes they were convicted of is an example of a binomial experiment.

   	a.	True
   	b.	False

  

Question 10

1. From past experience, a company has found that in cartons of transistors, 65% contain no defective transistors, 30% contain one defective transistor, 3% contain two defective transistors, and 2% contain three defective transistors. Find the standard deviation for the defective transistors.

   	a.	0.4236
   	b.	0.6275
   	c.	0.6508
   	d.	0.7921

  

Question 11

1. In a survey, 40% of Americans said they owned an answering machine. If 10 Americans are selected at random, find the probability that exactly 8 own an answering machine.

   	a.	0.011
   	b.	0.109
   	c.	0.008
   	d.	0.021

Answer 1

(8) False (b)

>> This is not a Binomial experiment, as there can be more than two outcomes of the experiment (since, there are many brands of cigarettes).

(9) False (b)

>> This is also not a Binomial experiment, as there can be more than two outcomes of the experiment (since, there are many different crimes).