2. Is P(AIB) the same as P (BIA)?
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- A recent college graduate is trying to decide whether or not pursuing a Master's degree is worth it. He decides examine this question at the a 0.05 level of significance, by comparing the salaries of a random sample of adults with only a Bachelor's degree to a random sample of adults with a Master's degree to see if the adults with a Master's degree earn more money. Let uB represent the average salary of an adult with a Bachelor's degree only and uM represent the average salary of an adult with a Master's degree. Which would be correct hypotheses for this test? O Ho: HB = M, H1: HB > µM O Ho:HB µM, H1 : µB = µM O Ho: HB = HM, H1: HB < µM O Ho: HB = µM, H1: HB # UM A random sample of 68 adults with only a Bachelor's degree had an average salary of $45452, with a standard deviation of $1187. A random sample of 40 adults with a Master's degree had an average salary of $47214, with a standard deviation of $1769. Find the test statistic (2 decimal places): Give the P-value (4 decimal places…What are fundamental differences between t test, z test and F test?The mayor of a town has proposed a plan for the annexation of a new bridge. A political study took a sample of 1400 voters in the town and found that 23% of the residents favored annexation. Using the data, a political strategist wants to test the claim that the percentage of residents who favor annexation is not equal to 26%. Testing at the 0.02 level, is there enough evidence to support the strategist's claim? A)Identify the value of the level of significance. B)Make the decision to reject or fail to reject the null hypothesis. C)State the conclusion of the hypothesis test.
- A survey was conducted to investigate trends of romantic relationships and online behaviors. Out of 250 adults in their 20s (20 to 29), 180 reported using social media to check on an ex (someone they used to date / be in a romantic relationship with). Out of 260 adults in their 40s (40 to 49), 156 reported using social media to check on an ex. You will perform a hypothesis test to see if the data provide evidence that there is a difference between the age groups in the proportions of people who checked on an ex. What is the alternative hypothesis? a.The proportion of people in their 20s who used social media to check on an ex is the same as the proportion of people in their 40s who used social media to check on an ex. b. The proportion of people in their 20s who used social media to check on an ex is different from the proportion of people in their 40s who used social media to check on an ex. c. The proportion of people in their 20s who used social media to check on an ex is…What does aij mean?A clinical researcher has developed a new test for measuring impulsiveness and would like to determine the validity of the test. The new test and an established measure of impulsiveness are both administered to a sample of participants. Describe the pattern of results that would establish concurrent validity for the new test.
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