Example 8.3 Find n for One Sample, Dichotomous Outcome where z is the value from the standard normal distribution reflecting the confidence level that will be used, E is the n = p(1-p E desired margin of error, and p is the proportion of successes in the population dacinss Planning study to estimate proportion of freshmen who currently smoke Want estimate within 5% of the true proportion and will use 95% confidence level Problem 2 Determination of Sample Size for One Sample Dichotomous Outcome Suppose a similar study was conducted two years ago and found that the prevalence of smoking was 27% among freshman. If the investigator believes that this is a reasonable estimate of prevalence today, how many subjects P-6.27 would be needed?
Unitary Method
The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.
Speed, Time, and Distance
Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.
Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.
Using Example 8.3 from the first submitted image, solve the problem for the second submitted image.
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