Good Morning, I need answers from these questions please.

1.) Part 3? (The second box on both for options are is/is not)

A test is made of Ho: u = 19 versus H : u > 19. A sample of size n = 49 is drawn, and x = 22. The population standard deviation is G = 8. (a) Compute the value of the test statistic z. (b) Is Ho rejected at the a = 0.01 level? (c) Is Ho rejected at the a = 0.10 level? Part 1 of 3 V (a) Compute the value of the test statistic. Round the answer to at least two decimal places. Z = 2.625 Part 2 of 3 Choose the correct type of hypothesis test. Then find the critical values for a = 0.01 and a = 0.10. Round your answers to three decimal places, if necessary. Critical Values for a = 0.01 Critical Values for a = 0.10 O Left-tailed O Right-tailed 2.326 1.282 O Two-tailed and and Part: 2 / 3Part 3 of 3 Determine whether to reject Ho. (b) Since the test statistic, z = 2.63, (Choose one) in the critical region, we X 5 (Choose one) Ho at the a = 0.01 level. (c) Since the test statistic, z = 2.63, (Choose one) in the critical region, we (Choose one) V Ho at the a = 0.10 level. reject do not rejectFacehook: A study showed that two years ago, the mean time spent per visit to Facebook was 20.2 minutes. Assume the standard deviation is o = 10.0 minutes. Suppose that a simple random sample of 103 visits was selected this year and has a sample mean of I = 19.2 minutes. A social scientist is interested to know whether the mean time of Facehook visits has decreased. Use the 0.2 0.10 level of signicance and the Pvalue method with the 1184 calculator. (a) State the appropriate null and alternate hypotheses. {b} Compute the Pvalue. (c) State a condusion. Use the o.= 0.10 level of signicance. (a) State the appropriate null and alternate hypotheses. This hypothesis test is a lefttailed 1' test- {b} Compute the Pvalue. Round the answer to at least four decimal places. Pvalue= 0.0210 Correct Answer: 0.1551 Part 3 of 4 (c) Determine whether to reject Ho. Use the a = 0.10 level of significance. (Choose one) Ho at the a = 0.10 level. Reject X 5 Do not rejectHouse prices: Data from the National Association of Realtors indicate that the mean price of a home in Denver, Colorado, in 2012 was 260.? thousand dollars. A random sample of 72 homes sold in 2013 had a mean price of 286 thousand dollars. Can you conclude that the mean price in 2013 is greater than the mean price in 2012'? Assume the population standard deviation is o = 158. Use the 11: 0.01 level of signicance and the Pvalue method with the TI84 calculator. State the appropriate null and alternate hypotheses. This hypothesis test is a righttailed 1' test. Compute the Pvalue. Round the Pvalue to at least four decimal places. Pvalue = Determine whether to reject H0. the null hypothesis H0. Re'ect DO not TE'ECt Interpreting calculator display: The following "Fl84 Plus display presents the results of a hypothesis test. 2 = 2.473799497 P = 006684244 I = 47.64 n=89 What are the null and alternate hypotheses? What is the value of the test statisc? Enter the value to the full accuracy shown (do not round). 2 = 2.473799497 What is the Pvalue? Enter the value to the full accuracy shown (do not round). 1Weight loss: In a study to determine whether counseling could help people lose weight, a sample of people experienced a groupbased behavioral intervention, which involved weekly meetings with a trained interventionist for a period of six months. The following data are the numbers of pounds lost for 14 people. Assume the population is approximately normal. Perform a hypothesis test to determine whether the mean weight loss is greater than 17 pounds. Use the r: = 0.01 level of signicance and le Pvalue mediod with the TI84 Plus calculator. 20.8 27.0 6.1 22.5 19.5 11.2 16.0 19.5 35.9 32.3 10.7 34.3 21.9 17.7 Semldnla'toElmel (a) State the appropriate null and alternate hypotheses. H]: p I} 17 This hypothesis test is a righttailed 'I' test. (b) Compute the Pyalue. Round the answer to at least four decimal places. Pvalue = (c) Determine whether to reject H0. the null hypothesis HO. Commuting to work: A community survey sampled 1923 people in Colorado and asked them how long it took them to commute to work each day. The sample mean oneway commute time was 25.9 minutes with a standard deviation of 13 minutes. A transportation engineer claims that the mean commute time differs from 25 minutes. Do the data provide convincing evidence that the engineer's claim is true? Use the a: 0.10 level of signicance and the critical value method with the 9 Critical Values for the Student's t Distribution Table. (a) State the appropriate null and alternate hypotheses. This hypothesis test is a test. Find the critical value{s}. Round the answer(s) to at least three decimal places. If there is more than one critical value, separate them with commas. Correct Answer: Critical value(s): 1.IIS45, 1.645 (b) Compute the value of the test statistic. Round the answer to at least three decimal places. College tuition: The mean annual tuition and fees in the 20132014 academic year for a sample of 25 private colleges in California was $35,500 with a standard deviation of $7600. A dotplot shows that it is reasonable to assume that the population is approximately normal. Can you conclude that the mean tuition and fees for private institutions in California differs "om $35,000? Use the 11: 0.01 level of signicance and the critical value method with the o Critical Values for the Student's t Distribution Table. (a) State the appropriate null and alternate hypotheses. H0: p. = 35000 This hvpothesis test is a test. Find the critical value{s}. Round the answer(s) to at least three decimal places. If there is more than one critical value, separate them with commas. Critical value(s): 2.797, 2.797 (b) Compute the value of the test statistic. Round the answer to at least three decimal places. no In a simple random sample of size 58, there were 36 individuals in the category of interest. Part 1 of 4 (a) Compute the sample proportion p. Round the answer to at least three decimal places. The sample proportion is 0.6207 Part 2 of 4 (b) Are the assumptions for a hypothesis test satisfied? Explain. Yes the number of individuals in each category is greater than 10. Part: 2 / 4 Part 3 of 4 (c) It is desired to test Ho :p =0.6 versus Hj :p > 0.6. Compute the test statistic z. Round the answer to at least two decimal places. The test statistic is X 5Spam: A researcher reported that "H.893 of all email sent in a recent month was spam. A system manager at a large corporation believes that the percentage at his company may be 78%. He examines a random sample of 500 emails received at an email server, and nds that 369 of the messages are spam. Can you conclude that less than 78% of emails are spam? Use both (1:0.10 and (1:0.01 levels of signicance and the critical value method with the table. State the appropriate null and alternate hypotheses. This hypothesis test is a lefttailed 7 test. Find the critical values. Round the answers to three decimal places. For t: = 0.10, the critical value is 1.2816 . For t: = 0.01, the critical value is 2.3263 . Compute the test statistic. Do not round intermediate calculations. Round the answer to two decimal places. Fm Curing diabet: Vertical banded gastroplastv is a surgical procedure that reduces the volume of the stomach in order to produce weight loss. In a recent study, 82 patients with Type 2 diabetes underwent this procedure, and 59 of them experienced a recovery from diabetes. Does this study provide convincing evidence that less than 72% of those with diabetes who undergo this surgery will recover from diabetes? Use the o.= 0.05 level of signicance and the Pvalue method with the TI34 Plus calculator. (a) State the appropriate null and alternate hypotheses. H0: p = 0.72 H]: p