The questions are in the photos below:

For Q12, the answer options are in the photo below question 12.

Question 18 Not yet answered Marked out of 100 \\7 Flag question A type I error occurs when you say the null hypothesis is wrong, but you are incorrect (i.e., you falsely reject the null hypothesis). Select one: 0 True 0 False Question 19 Not yet answered Marked out of 'I'OO '7 Flag question An insurance company wants to see whether claims are taking longer than 5 days to process on average. They set up a statistical test with a null hypothesis that the average time for processing a claim is 5 days, and an alternative hypothesis that the average time for processing a claim is greater than 5 days. After completing the statistical test, it is concluded that the average exceeds 5 days. However, it is eventually learned that the mean process time is really 5 days. From a statistical point of view: Select one: Q a. A type I error was made 0 b. A correct decision was made 0 c. A type land Type II error were made 0 d. A type II error was made Question 14 Not yet answered Marked out of 1.00 \\7 Flag question Suppose the null hypothesis of a test is H0: p = 15, the alternative is Ha: p 12 O d.Ho:u:12,Ha:p 50 Given a sample statistic of)? = 66 select the best estimate for the p-value. Hint: Consider that 95% of a normal distribution is within 2 standard deviations of the mean. E Question 17 Not yet answered Marked out of 1.00 V Flag question A study at Auckland's Green Lane Hospital looked at the effect of length of fast on stomach pH levels. Patients operated on in the morning have shorter fasts than those operated on in the afternoon. A test is conducted to determine whether there is any evidence of a different mean stomach pH level for afternoon patients compared with morning patients. Let M be the average pH level for the afternoon patients and 11M be the average pH level for the morning patients. The following pair of hypotheses is used for the test: Ho: pA MA = 0 vs. Ha: pA - pM # 0. From sample data, a P-value of 0.057 is calculated for the test. Using (1 (alpha) : 0.05, what are the decision and conclusion from the test? Select one: Q a. Do not reject Ho; conclude that there is insufficient evidence at o = 0.05 that mean stomach pH is different in morning and afternoon patients. 0 b. Reject Ho; conclude that there is sufficient evidence at a = 0.05 that mean stomach pH is different in morning and afternoon patients. 0 c. Reject Ha; conclude that there is sufficient evidence at a = 0.05 that mean stomach pH is the same in morning and afternoon patients. 0 d. Do not reject Ha; conclude that there is insufficient evidence at o = 0.05 that mean stomach pH is the same in morning and afternoon patients. Question 5 A newspaper recently ran an article about a study of differences in perceptions of sexual harassment between men and Not yet women. The article claimed that the survey showed that men and women differ in their perception of sexual harrassment answered problems in the workplace. Marked out of 1.00 If the true population proportion of men who think that sexual harassment is a major problem in the workplace is pm and the true population proportion of women who think that sexual harassment is a major problem in the workplace is Pw, what null Flag question and alternative hypotheses should be used to investigate the claim that the proportions of men and women who think that sexual harassment is a major problem in the workplace are different? Select one: O a. Ho : Pw - Pm = 0, Ha : Pw - Pm > 0 O b. Ho : Pw - Pm # 0, Ha : Pw - Pm = 0 O c. Ho : Pw - Pm 2 0, Ha : Pw - Pm SO O d. Ho : Pw - Pm = 0, Ha : Pw - Pm # 0Question 6 Consider the following set of data: Not yet Men (1) Women (2) answered Sample Size 100 80 Marked out of Mean $52,850 $43,000 1.00 Standard Deviation $345 $500 Flag question Which of the following sets of hypotheses would we use to test whether there is a difference between the mean salary of men (M1) and the mean salary of women (M2)? Select one: O a. Ho: M1 - M2 = 0, Ha: M1 - M2 # 0 O b. Ho: M1 - 12 = 0, Ha: M1 - 12 0Question 8 Not yet answered Marked out of 100 'F Flag question We have created a 90% confidence interval for a population mean u with the resulting interval given by (2, 8). What decision will we make if we test H0: u = 6 against Ha: u at 6 at a = 0.10 Select one: 0 3. Accept Ha O b. We cannot tell what our decision will be with the information given. 0 c. Do not reject Ho 0 d. Reject Ha 0 e. Reject Ho Question 13 Not yet answered Marked out of 1.00 '(7 Flag question In hypothesis testing, Pvalue > 0 (alpha) means that the Rejection Decision will be to fail to reject the null hypothesis H0. True or false? Select one: 0 True 0 False Question 15 Not yet answered Marked out of 1.00 V Flag question Contaminants such as lead are present in small amounts in cosmetics such lipstick. In its last extensive tests, the US FDA found that the average lead level in lipsticks produced by one particular cosmetics company was 5.0 ppm (parts per million). The company now claims that this average level has been reduced. The company publicises the results of a hypothesis test using the following pair of hypotheses: Ho: p = 5.0 vs. Ha: p