help me answering this 25 question in math please. answer only no need for long solutions!
8. The upper limit is: C, 29.19 A. 29 D. 29.32 B. 29.15 9. When X = 50 and n = 215, what is the value of p? C. 50 A. 215 D. 0.23 B. 4.3 For items 10-12. Refer your answer to the given problem below. In a learning style study, 1200 respondents were asked if they can assimilate concepts while watching television. 586 said Yes. Find a 95% confidence interval for the population proportion, p. 10. Which of the following are the confidence coefficients? A. +1.96 C. +2.33 B. +2.26 D. +2.58 11. Which of the following corresponds to the values of p and q? A. 0.49 and 0.49 C. 0.51 and 0.49 B. 0.49 and 0.51 D. 0.51 and 0.51 12. The true population proportion falls between A. 44% and 54% C. 46% and 52% B. 45% and 53% D. 48% and 50% For items 13 - 15. A particular brand of coffee contains an average of 112 mg of caffeine per cup with a standard deviation of 20 mg. Joshua wants to investigate the same to estimate the true population mean caffeine content correct to within 5 mg adopting 95% confidence. How many cups of the same brand of coffee does he need for a sample? 13. Which of the following corresponds to the standard error, E? A. 20 mg C. 5 mg B. 0.5 mg D. 112 mg 14. The standard deviation of 20 mg describes what kind of standard deviation? A. population C. sample B. proportion D. none of the above 15. How many cups of the same brand of coffee does Joshua needs for his sample? A. 61.46 C. 61.47 B. 62 D. 8 16. Which of the following refers to the intelligent guess about a population proportion? A. Hypothesis C. Decision B. Test statistic D. Interpretation 17. When the null hypothesis is rejected, which of the following is true? A. There is sufficient evidence to back up the decision. B. There is no sufficient evidence to back up the decision. C. The conclusion is guaranteed. D. The conclusion is not guaranteed.1. Which of the following describes to the range of values used to estimate a population parameter? A. Interval Estimate C. Point Estimate B. Mean D. Population 2. Which of the following describes a single value used to estimate a population parameter? A. Interval Estimate C. Point Estimate B. Z statistic D. Population 3. The maximum error of the estimate is found by A. adding za by standard deviation of the sample means B. subtracting za by standard deviation of the sample means C. multiplying za by standard deviation of the sample means D. dividing za by standard deviation of the sample means 4. In a t distribution, the critical values are based on_? A. n C. Z B. t D. df 5. What is the value resulting from subtracting the maximum error from the sample mean? A. Point Estimate C. Interval Estimate B. Lower Limit of the interval estimate D. Upper limit of the interval estimate For items 6 -8. Refer your answer to the given problem below. The mean gasoline consumption of 10 cars is 28 liters with a standard deviation of 1.6 liters. Find the point estimates using 95% confidence level. 6. What is the appropriate distribution? A. Z C. p B. t D. S 7. The lower limit is approximately: A. 27 C. 26.81 B. 26.85 D. 26.6818. In a z-test of proportions, the computed z lies in the rejection region. This means that: A. The sample proportion is equal to the population proportion. B. The sample proportion is equal to the hypothesized proportion. C. The sample proportion is not equal to the hypothesized proportion. D. The sample proportion is not equal to the population proportion. ballpens." 19. What type of hypothesis is this: "Students using brand A ballpens write better than those using brand B A. Null hypothesis B. Nondirectional hypothesis C. Directional Hypothesis D. none of the above A. Type 1 20. What type of error is committed when you reject a null hypothesis when, in fact, it is true? B. Type III C. Type II D. Type l, II, and III 21. Suppose it is the Christmas season and Janine thinks that it is the month of January, what error is she committing? A. Type l C. Type II C. Type Ill D. Type I, II, and III 22. Which of the following is the CORRECT null and alternative hypotheses of the statement: "The average time to commute from home to school is 35.9 minutes"? A. Ho: H = 35.9 and H1 : 1 = 35.9 C. Ho: ut = 35.9 and H1: M 35.9 D. Ho: H = 35.9 and H1 : H # 35.9 23. Given the hypotheses Ho: H = 23.6 and H1: M = 23.6, critical value of +1.96 and the test value of -2.15, which of the following shows the correct rejection region? A. C. B. D. For items 24 - 26. Refer your answer to the given problem below. The manager of the women's dress department of a store wants to know whether the true average number of women's dresses sold per day is 24. In a random sample of 36 days, it has been found out that the average number of dresses sold is 23 with a standard deviation of 7 dresses. At the 0.05 level of significance, is there a sufficient evidence to reject the null hypothesis that u = 24? 24. Which of the following is the CORRECT null and alternative hypotheses? A. Ho: M = 24 and H1: H = 24 C. Ho: 1 = 24 and H1: M 24 25. What is the computed z value? A. 0.86 C. -0.86 B. 0.76 D. -0.76
