Round your all answers to two decimal places. a. What is the point estimate of the difference between the population mean rating for ships that carry fewer than 500 passengers and the population mean rating for ships that carry 500 or more passengers? b. At 95% confidence, what is the margin of error? c. What is a 95% confidence interval estimate of the difference between the population mean ratings for the two sizes of ships? Use z-table. to

a. Develop a hypothesis test that can be used to determine whether the mean annual consumption in Webster City is higher than the national mean. Ho: $21.5 Ha: >21.5 b. What is a point estimate of the difference between mean annual consumption in Webster City and the national mean? (2 decimals) c. At a = 0.01, test for a significant difference by completing the following. Calculate the value of the test statistic (2 decimals). The p-value is Reject the null hypothesis? (4 decimals) Yes v What is your conclusion? Conclude the population mean consumption of milk in Webster City is greater tha

The average house has 15 paintings on its walls. Is the mean larger for houses owned by teachers? The data show the results of a survey of 16 teachers who were asked how many paintings they have in their houses. Assume that the distribution of the population is normal. 18, 15, 17, 14, 16, 17, 18, 15, 15, 14, 14, 14, 15, 15, 16, 18 What can be concluded at the a = 0.05 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Но: Select an answer v H1: Select an answer v 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 ? va 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 mean is not significantly more than 15 at a = 0.05, so there is sufficient evidence to conclude that the population mean number of paintings that are in…

Among applicants to a school of public health, the average GRE writing score was about 3, the SD was about 0.5, and the lowest score was 2.5. True or False: the GRE writing scores follow the normal curve. Select one: True False Brevious page Next page C