Unit 3 Minitab Question 1: A study conducted at the local elementary school wants to see if providing lunch will increase test scores. The previous year's average test score is 65. Before fully implementing this expensive proposal, a random sample of 10 students were given hot breakfasts for a week and then given the same standardized test. Test Scores 65 75 58 80 95 60 88 85 70 73 a. State the null hypothesis and the alternative hypothesis in words. b. State the null and experimental hypotheses in symbols. c. Why is this a good use of the 1-sample t-test? d. Identify the Independent Variable (IV) and Dependent Variable (DV). e. Conduct the statistical analysis using Minitab. f. Conclusions? Reject or fail to reject the null? g. Explain the confidence interval and the direction of the effect. h. Check the assumption of normality

A researchers claims 45% of couples have children. They conduct a hypothesis test and reject the null hypothesis. What type of error could have been committed here? Type 1, type 2, or power if the test?

You are conducting a study to see if the proportion of voters who prefer the Democratic candidate is significantly different from 72% at a level of significance of a = 0.10. According to your sample, 63 out of 83 potential voters prefer the Democratic candidate. a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: v Select an answer v (please enter a decimal) H1: ? v Select an answer v (Please enter a decimal) c. The test statistic ? v = (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is ? v a f. Based on this, we should Select an answer v the null hypothesis. g. Thus, the final conclusion is that ... O The data suggest the population proportion is not significantly different from 72% at a = 0.10, so there is not sufficient evidence to conclude that the proportion of voters who prefer the Democratic candidate is different from 72%. O The data suggest the…

Can you help me determine the test statistic, the P-value, and the conclusion for this hypothesis test?

A company is evaluating the knowledge retention of their fiscal policy training program by administering a quiz to a randomly selected sample of 16 employees both one week after completing training and 6 months after completing the training. Employee scores are shown in the Excel file. Has there been a significant reduction in knowledge of the fiscal policy six months after completing training? State the five hypothesis testing steps to answer this question. Employee 1 2 3 45 6 7 8 9 10 0 12 3 4 5 6 11 13 14 15 16 One week after 69 80 73 100 100 50 77 64 94 100 100 100 100 47 67 63 Six months after 70 79 77 97 95 50 60 64 84 90 80 99 94 57 58 68

. It is estimated that about 5% of the professors at Metro State University use illegaldrugs. Suppose random drug testing is instituted by state law. The drug test used hascertain error rates: 6% of the drug users receive a (false) negative test result, and 4% ofthe non-drug users receive a (false) positive test result. If they test me next week and thetest result comes back positive, how likely is it that I actually do use illegal drugs?

QUESTION 8 A social psychologist gave a questionnaire about concern for farm workers to seven participants before and after they attended a film about union organization of farm workers to determine whether the film affected their level of concern. Which of the following hypothesis tests would be most appropriate given this scenario? O single-sample t-test independent sample t-test O dependent sample t-test Oz-test

Questions A, B, and C. Please!