Question

According to table 1, What is the 95% confidence interval for the true proportion with successful treatment?

Upper Limit?

Lower Limit?

Step 1

Given that total patients = 399

Total successful treatments = 275

proportion of total successful treatments = 275/399 = 0.689

Step 2

The confidence interval for populaiton proportion is given by the formula mentioned below

Here we know p^ = 0.689 and n = 399.

Step 3

The Z critical score for 95% confidence interval is given by the following Z table.

The level of significance = 1- 0.95 = 0.05.

We refer to hal...

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