Stat 160 Prequiz over Section 7.3, 7.4



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1. We can directly use the Central Limit Theorem to determine a confidence interval for a proportion p because

The sample proportion is between 0 and 1.
The sample proportion is an average.
The sample proportion is never negative.
The sample proportion is a statistic.
2. Suppose the confidence interval for p is (.75, .86). Which statement is true.

The true proportion is between .75 and .86.
The true proportion is .805.
We are fairly confident that the true proportion is between .75 and .86.
The sample proportion is less than .75.
3. Suppose we have an estimator of a parameter. Obtaining a confidence interval for this parameter by resampling involves

Guessing the confidence interval.
Obtaining a poll.
Lying.
Resampling to obtain a histogram of the distribution of the estimator.
4. Suppose we have an estimator of a parameter and we obtain a confidence interval for this parameter by resampling. The resampling is done

With a friend.
Without replacement.
With relacement.
With tender loving care.