Warmup, Monday 3/12/01: Overseas Calls
At one point a handout containing Chapter 5 problems was
given out containing this problem:
Suppose 90% of overseas calls are completed. A company makes
100 calls. What is the probability that more than 95% of
these calls go through.
On your own or with a partner, determine
- which of these proportions is
.
- just what
represents?
- the type of sampling distribution
has. Sketch this distribution, and justify your answer.
- the answer to the question posed in the statement of the problem.
Also, suppose you didn't know p. Determine a 95% confidence
interval for p based on sample data.
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