Researchers collected data on the numbers of hospital admissions resulting from motor vehicle crashes, and results are given for Friday the 6th and Friday the 13th in the same month. Use the Wilcoxon signed-ranks test to test the claim that the matched pairs have differences that come from a population with median equal to zero at a significance level of a = 0.05. Fri. 6th 7 8 10 9 7 12 Fri. 13th 11 10 11 10 12 14 Click to view a table of critical values for the Wilcoxon signed-ranks test. First define the null and alternative hypotheses. Ho: Calculate the test statistic. T= Calculate the critical value. The critical value is What is the conclusion for this hypothesis test? OA. Fail to reject Ho. There is insufficient evidence to warrant rejection of the claim of no difference. OB. Fail to reject Ho. There is sufficient evidence to warrant rejection of the claim of no difference. OC. Reject Ho. There is insufficient evidence to warrant rejection of the claim of no difference. O D. Reject Ho. There is sufficient evidence to warrant rejection of the claim of no difference.

The histogram describes the height of students in a math class. Is the data univariate or bivariate? Is the skewness left, right, or normal?

Answer j and k

A researcher is looking at the relationship between rates of lung cancer and smoking status. they collect a group of smokers and non-smokers and record a binary measurement of whether or not the person has or has had lung cancer. Which statistical method should be used to test the relationship between these two variables?

A random sample of 13 men and 19 women in a college class reported their grade point averages (GPAS). A woman in the class says that she believes that college women tend to have higher GPAS than do college men. Does this sample support her claim? Histogram of HGPA Histogram al WGPA 13 20 25 10 as 125 Summary statistics for these data are: 2.898 0.583 Women 3.330 | 0.395 Men What is the test statistic? [Enter t score to 2 decimal places] * Your answer Create and interpret a 95% confidence interval. Enter the low value of confidence interval to four decimal places. Your answer Enter the high value of confidence interval to four decimal places. Your answer

An observational study of teams fishing for the red spiny lobster in a certain body of water was conducted and the results published in a science magazine. One of the variables of interest was the average distance separating traps - called "trap spacing" - deployed by the same team of fishermen. Trap spacing measurements (in meters) for a sample of seven teams of fishermen are shown in the accompanying table. Of interest is the mean trap spacing for the population of red spiny lobster fishermen fishing in this body of water. Complete parts a through f below. E Click the icon to view the trap spacing data. Trap Spacing Data a. Identify the target parameter for this study. The target parameter for this study is 93 101 107 95 81 68 84 b. Compute a point estimate of the target parameter. (Round to two decimal places as needed.) Print Done c. What is the problem with using the normal (z) statistic to finda confidence interval for the target parameter? O A. The point estimate is too large to…