Testing Hypotheses. In Exercises 13-24, assume that a simple random sample has been selected and test the given claim. Unless specified by your instructor; use either the P-value method or the critical value method for testing hypotheses. Identify the null and alternative hypotheses, test statistic, P-value (or
14. Speed Dating Data Set 18 “Speed Dating” in Appendix B includes “attractive” ratings of male dates made by the female dates. The summary statistics are n = 199,
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- In the process of completing a hypothesis test, when it comes to decide if we should "Reject the Null Hypothesis" or if we "Do Not Reject the Null Hypothesis", how can we use the P-value to help make our decision? Choose the correct answer to fill in the blank. If our p-value is (less than/ greater than) _________________ the signicance level (?), then we (Reject the Null Hypothesis/ Do Not Reject the Null Hypothesis) _____________________.arrow_forwardDiscuss the errors that can be made in hypothesis testing. What is a Type I error? Why might it occur? What is a Type II error? How does it happen?arrow_forwardHow do I find the p value for a hypothesis testarrow_forward
- Calculate the test statistic Calculate the p value What is the conclusion for this hypothesis test?arrow_forwardTechnology. In Exercises 9–12, test the given claim by using the display provided from technology. Use a 0.05 significance level. Identify the null and alternative hypotheses, test statistic, P-value (or range of P-values), or critical value(s), and state the final conclusion that addresses the original claim. Airport Data Speeds Data Set 32 “Airport Data Speeds” in Appendix B includes Sprint data speeds (mbps). The accompanying TI-83/84 Plus display results from using those data to test the claim that they are from a population having a mean less than 4.00 Mbps. Conduct the hypothesis test using these results. For Exercise 9arrow_forwardCalculate the test statistic Calculate the P-value What is the conclusion for this hypothesis test?arrow_forward
- provide an example of hypothesis testing using the t score testarrow_forwardCalculate the test statistic Calculate the p value What is the conclusion for this hypothesis test? What is the fundamental error with this analysis?arrow_forwardFind the P-value for the indicated hypothesis test.In a sample of 47 adults selected randomly from Vancouver, it is found that 9 of them have been exposed to the flu. Find the P-value for a test of the claim that the proportion of all adults in Vancouver that have been exposed to this strain of the flu is more than 8%.arrow_forward
- Perform a statistical analysis/test of hypothesis, showing all the steps in hypothesis testing.arrow_forwardState standards mandate that 90% of municipal officers responding to emergency calls will reach their destination within 5 minutes. To test this, you randomly sample 115 emergency calls to your department, and you find that out of those 115 calls, 90 officers get where they need to go within 5 minutes. What hypothesis test would you use to test whether your officers meet state standards? (Don't compute the result, but just choose the appropriate hypothesis test and briefly explain the reasoning for your choice)arrow_forwardPerform a statistical test for the given problem. Follow the steps in hypothesis testing when you present your results. To find out whether a new serum would arrest leukemia, 16 patients, who had all reached an advanced stage of the disease, were selected. Eight patients received the treatment and eight did not. The survival was taken from the time the experiment was conducted. Without Treatment: 1.8, 2.9, 3.3, 3.1, 2.4, 1.5, 1.5, 1.6 With Treatment: 3.9, 4.8, 4.7, 4.9, 4.2, 4.5, 5.5, 4.2arrow_forward
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