There will be 45 adults going to a museum. There will be twice as many students as adults. Adult tickets cost $25 each. Student
tickets cost $12 each. What is the total cost for the students and adults?
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Answer:
The sample size required is 910.
Step-by-step explanation:
The confidence interval for population proportion is:
The margin of error is:
Given:
The critical value of <em>z</em> for 90% confidence level is:
*Use a standard normal table.
Compute the sample size required as follows:
Thus, the sample size required is 910.