$0.25 per minute for the first 400 minutes. Write the function that models
2 answers:
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The number of people who voted follows a binomial distribution with probability of having voted 
and 
subjects, which means the approximating normal distribution should have mean 
and standard deviation 
.
With the continuity correction, you have
With the continuity correction, you have
Answer:
The 90% confidence interval of the population proportion is (0.43, 0.56).
Step-by-step explanation:
The (1 - <em>α</em>)% confidence interval for population proportion <em>p</em> is:
The information provided is:
<em>X</em> = 74
<em>n</em> = 150
Confidence level = 90%
Compute the value of sample proportion as follows:
Compute the critical value of <em>z</em> for 90% confidence level as follows:
*Use a <em>z</em>-table.
Compute the 90% confidence interval of the population proportion as follows:
Thus, the 90% confidence interval of the population proportion is (0.43, 0.56).