Stat 119
Name____________________________
Quiz 5A
Red id: __________________________
Use the following information for problems 12
Thirteen percent of people are lefthanded. A random sample of 12 persons is selected.
1.
(2 points) How many left handed people do you expect to find in the sample of 12
persons?
2.
(2 points) Find the probability that at least two of the 12 persons is lefthanded.
Answer
3.
(1 point) Which of the following is NOT a property of the binomial distribution?
A. There are a fixed number (n) of observations.
B. The probability of success and the probability of failure must be equal.
C.
The observations or trials are independent.
D. For each trial only two, mutually exclusive outcomes are possible.
Answer
Use the following information to answer questions 45
At a large computer company, 88% of all employees have a college degree. Suppose a random
sample of 410 employees is obtained and 85% of them have a college degree.
4.
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 Spring '07
 Helen
 Statistics, Standard Deviation, Mean, Lefthandedness

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