Question: When to Use What: For each example below you would start to construct a confidence interval by identifying which distribution should be used to find

When to Use What:For each example below you would start to construct a confidence interval by identifying which distribution should be used to find the margin of error. It is possible that you won't be able to use either distribution.

(a) a confidence interval for a population proportion wheren=50and there are30successes in your sample leading to a sample proportion of0.600

z-distribution

t-distribution

neither distribution

(b) a confidence interval for a population proportion wheren=67and there are63successes in your sample leading to a sample proportion of0.940

z-distribution

t-distribution

neither distribution

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