Answer Happy

Practice Concluding a Hypothesis Test For each of the scenarios below complete the following: Identify the null and alternative hypothesis. • State if the results are statistically significant and why Conclude the hypothesis test in context • Notice that the scenarios are similar to the previous worksheet with slight changes. 1. We are interested in answering the question: In Richmond Kentucky, are less than 75% of stray dogs spayed/neutered? A random sample of 150 stray dogs found that 70% were spayed/neutered. The test was performed at the 10% significance level and the resulting p-value was 0.051. 2. We are interested in answering the question: Is the average price of Pepsi 2-Liter bottles in Kentucky less than 99 cents? A sample of 75 stores selling Pepsi 2-liters found an average price of 96 cents. The test was performed at the 1% significance level and the resulting p-value was 0.0065. I 3. A researcher believes that if patients with arthritis go to physical therapy twice a week their pain levels will be lower than usual pain levels. Patients with arthritis usually rate their pain a 3.5 on an 8- point scale. The test was performed at the 10% significance level and the resulting p-value was 0.113. 4. A neonatal nurse suspects that newborn babies are more likely to be boys than girls. A random sample found 13,173 boys were born among 25,468 newborn children. The test was performed at the 2% significance level and the resulting p-value was 0.0132.