Researchers collected data on the numbers of hospital admissions resulting from motor vehicle crashes, and results are given below for Fridays on the 6th of a month and Fridays on the following 13th of the same month. Use a 0.05 significance level to test the claim that when the 13th day of a month falls on a Friday, the numbers of hospital admissions from motor vehicle crashes are not affected. Friday the 6th: Friday the 13th: Let H be the ▼0 Ho: Ha H₁ Ha 0 10 14 t= 6 12 Find the value of the test statistic.. 12 14 12 11 (Round to three decimal places as needed.) 4 6 50 State the result of the test. Choose the correct answer below. 12 in the numbers of hospital admissions resulting from motor vehicle crashes for the population of all pairs of data. EIER Identify the critical value(s). Select the correct choice below and fill the answer box within your choice. (Round to three decimal places as needed.) OA. The critical values are t= + OB. The critical value is t= OA. There is sufficient evidence to warrant rejection of the claim of no effect. Hospital admissions do not appear to be affected. OB. There is not sufficient evidence to warrant rejection of the claim of no effect. Hospital admissions do not appear to be affected. OC. There is sufficient evidence to warrant rejection of the claim of no effect. Hospital admissions appear to be affected OD. There is not sufficient evidence to warrant rejection of the claim of no effect. Hospital admissions appear to be affected. Time Remaining: 01:27:58 Next

A police department released the numbers of calls for the different days of the week during the month of​ October, as shown in the table to the right. Use a 0.01 significance level to test the claim that the different days of the week have the same frequencies of police calls. What is the fundamental error with this​ analysis?   Day  Sun Mon Tues Wed Thurs Fri Sat   Frequency 152 200 229 241 173 213 230

In a study conducted by some Statistics students, 73 people were randomly assigned to listen to rap music, music by Mozart, or no music while attempting to memorize objects pictured on a page. They were then asked to list all the objects they could remember. The summary statistics for each group are shown in the table. Complete parts a and b. HA: HM-HRU C. Ho: HM-HR <0 HA: HM-HR=0 ... Count Mean SD HA: HM-HRU D. Ho: HM-HR = 0 HA: HM-HR <0 Rap Mozart The 90% confidence interval for the negative difference in means is (.). (Round to three decimal places as needed.) 33 • 20 10.88 10.15. 3.71 3.04 No Music 20 13.29 4.88 Test the hypothesis. t = -0.78 (Round to two decimal places as needed.) P = 0.7799 (Round to four decimal places as needed.) State your conclusion. Use α = 0.05. Do not reject Ho. There is no evidence that the mean number of objects remembered by those who listen to Mozart is higher than the mean number of objects remembered by those who listen to rap music. b) Now compare…

The following table is from a publication. The individuals in the following table have an eye irritation, a nose irritation, or a throat irritation. They have only one of the three. Is there sufficient evidence to reject the hypothesis that the type of ear, nose, or throat irritation is independent of the age group at a level of significance equal to 0.05?   Age (years) Type of Irritation         18-29     30-44     45-64     65 and Older Eye 422 560 340   54 Nose 932 1324 802 101 Throat 247 309 142  24 (a) Find the test statistic. (Round your answer to two decimal places.)(ii) Find the p-value. (Round your answer to four decimal places.)(b) State the appropriate conclusion. Reject the null hypothesis. There is not significant evidence that this sample contradicts the claim of independence.Reject the null hypothesis. There is significant evidence that this sample contradicts the claim of independence.    Fail to reject the null hypothesis. There is not significant…