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In testing the hypothesis, Ho: u> or equal to 31.5 and Ha: u<31.5 , using p-value approach, a p-value of 0.0409 was obtained. If σ = 8.7, find out a sample mean which produced this p-value given that sample of size n = 50 was randomly selected.
Statistics and Probability, Statistics
In a pulse rate research, a simple random sample of 120 men results in a mean of 80 beats per minute, and a standard deviation of 11 beats per minute. Based on the sample results, the researcher concludes that the pulse ...
Suppose that you wanted to study children who have Down syndrome. How might you use cluster sampling to obtain a probability sample of children with Down syndrome in your state?
1. How does the sample size influence the extent to which the sample data can be used to accurately estimate population parameters? 2. What statistics are used to indicate how accurately the sample data can predict popul ...
1. A successive independent survey design and a longitudinal survey design both examine changes in responses over time. How do they differ in their approach? 2. Distinguish between demographic and epidemiological researc ...
Thirteen students were randomly selected from the College of Public Health and their diastolic blood pressure was tested. The sample mean and standard deviation were 80.9 mmHg and 2.1 mmHg respectively. What is the obtai ...
Use a fast food restaurant and for 5 types of food from the restaurant, list the fat grams and its total calories. Is there a linear relationship between the two variables? The double whopper has 900 calories and 56 gram ...
Suppose that Fara is preferred by every man to all the other women. Prove that under every stable matching Fara is matched to the same man. Who is the lucky guy?
1. Why does quasi-experimentation sometimes require the use of "patched-up" designs? 2. Discuss the philosophy of critical multiplism as it applies to quasi-experimental research.
At Stats High, there is a difficult exam that every junior takes. Over the last 5 years, the exam results are normally distributed with a mean of 35% and a standard deviation of 7%. If your friend takes the exam and rece ...
A sample size of 50 is selected from a normal distribution having a mean of 95 and a standard deviation equal to 15. What is the probability of selecting a sample having a mean exceeding 100?
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