Individuals are often classified as being morbidly obese if they are 100 pounds

Question

Individuals are often classified as being morbidly obese if they are 100 pounds overweight. Imagine that the population proportion of morbidly obese individuals in the country as a whole is 1.5%. 1. How large does n need to be to use the standard normal distribution for hypothesis testing? 2. You obtain information on 500 individuals from a town and calculate the sample proportion to be 3%. 3. Calculate a 93% confidence interval for sample proportion? 4. Does the confidence interval include the population proportion? 5. What is the probability that the sample proportion is equal to the population proportion?

Explanation / Answer

1. the more the population size the higher the accuracy in results

2. from 500 sample= the answer at 3% is= 15

4. yes it incluedes population proportion

5. the probability to equal is 0.8 or 80%

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